| 1. |
- Widén, Cecilia, et al.
(författare)
-
Erythrocyte antioxidant protection of rose hips (Rosa spp.)
- 2012
-
Ingår i: Oxidative Medicine and Cellular Longevity. - : Landes Bioscience / Hindawi Publishing Corporation. - 1942-0900 .- 1942-0994. ; , s. 621579-
-
Tidskriftsartikel (refereegranskat)abstract
- Rose hips are popular in health promoting products as the fruits contain high content of bioactive compounds. The aim of this study was to investigate whether health benefits are attributable to ascorbic acid, phenols, or other rose-hip-derived compounds. Freeze-dried powder of rose hips was preextracted with metaphosphoric acid and the sample was then sequentially eluted on a C18 column. The degree of amelioration of oxidative damage was determined in an erythrocyte in vitro bioassay by comparing the effects of a reducing agent on erythrocytes alone or on erythrocytes pretreated with berry extracts. The maximum protection against oxidative stress, 59.4±4.0% (mean ± standard deviation), was achieved when incubating the cells with the first eluted meta-phosphoric extract. Removal of ascorbic acid from this extract increased the protection against oxidative stress to 67.9±1.9%. The protection from the 20% and 100% methanol extracts was 20.8±8.2% and 5.0±3.2%, respectively. Antioxidant uptake was confirmed by measurement of catechin by HPLC-ESI-MS in the 20% methanol extract. The fact that all sequentially eluted extracts studied contributed to protective effects on the erythrocytes indicates that rose hips contain a promising level of clinically relevant antioxidant protection.
|
|
| 2. |
- Widén, Cecilia, et al.
(författare)
-
Protection of human erythrocytes against oxidative stress by berries
- 2012
-
Ingår i: Journal of Berry Research. - : IOS Press. - 1878-5093 .- 1878-5123. ; 2:3
-
Tidskriftsartikel (refereegranskat)abstract
- Berries contain several bioactive compounds that can protect against oxidative stress. In this study we evaluated the protective effect of different sequential extracts (ethyl acetate, ethanol and water) of seven berry species: bilberry (Vaccinium myrtillus), blackcurrant (Ribes nigrum), elderberry (Sambucus nigra), lingonberry (Vaccinium vitis-idaea), rose hips (Rosa sp.), sea buckthorn (Hippohae rhamnoides) and strawberry (Fragaria × ananassa). The protective effect was tested on human erythrocytes and the antioxidant capacity was also evaluated in vitro by the FRAP assay. In the erythrocyte assay all sea buckthorn extracts were superior in antioxidant effect to other berry extracts. The ethyl acetate extract of bilberries, and the ethanol and water extracts of blackcurrants, also protected the erythrocytes from oxidation. In contrast, water extracts of rose hips, bilberries and strawberries had a pro-oxidant effect on erythrocytes. The water extract of rose hips was superior to the other berry extracts in the FRAP assay. Thus, the results of the erythrocyte assay did not correlate with the results of the FRAP assay, but provided additional insights into the potential protective effects of berry extracts against oxidative stress.
|
|
| 3. |
- Ahmadi Afzadi, Masoud, et al.
(författare)
-
Biochemical contents of apple peel and flesh affect level of partial resistance to blue mold
- 2015
-
Ingår i: Postharvest Biology and Technology. - : Elsevier BV. - 0925-5214. ; 110, s. 173-182
-
Tidskriftsartikel (refereegranskat)abstract
- Apple fruit contains a wide range of chemical compounds that may contribute to resistance against blue mold caused by Penicillium expansum. In the present study, contents of total titratable acidity, malic acid, total phenols and 10 individual phenolic compounds were quantified in peel and flesh fractions of both control and blue mold-inoculated fruits of 24 apple cultivars. In addition to the significant variation among cultivars in terms of all quantified compounds, correlation analysis revealed a significant impact of total phenols and individual phenols like flavonols and procyanidins B2 in the peel fraction, on blue mold resistance in the inoculated fruits. Multivariate analyses on data for chemical compounds in peel tissue of inoculated fruits, could also separate resistant and susceptible cultivars. These findings can be useful in breeding programs since higher levels of phenolic compounds may indicate better resistance in apple cultivars. (C) 2015 Elsevier B.V. All rights reserved.
|
|
| 4. |
- Ahmadi Afzadi, Masoud, et al.
(författare)
-
Genetics of resistance to blue mould in apple: inoculation-based screening, transcriptomics and biochemistry
- 2016
-
Ingår i: Acta Horticulturae. - 0567-7572 .- 2406-6168. ; 1127, s. 55-60
-
Konferensbidrag (refereegranskat)abstract
- Blue mould caused by Penicillium expansum is a major contributor to loss of marketable fruit during storage. Damage is also aggravated by the prohibition of postharvest fungicides in many countries, and in organic production everywhere. Robust data on levels of resistance to this disease are crucial for further research and for breeding of improved cultivars. Inoculation of fruit with fungal spores and estimation of the diameter of resulting lesions after cold storage demonstrated significant variation among cultivars. In addition, cultivars with high firmness at harvest and little softening, i.e., loss of firmness during storage, had less susceptibility, as also did late-ripening cultivars. In another part of the study, a possible association between lesion diameter and chemical contents in fruit flesh and fruit peel of 23 cultivars was investigated. Content of different quercetins and procyanidin B2 was positively associated with the level of tolerance. Samples taken after inoculation showed stronger association with the chemical contents than did samples of control fruit, suggesting that disease development had triggered a defence reaction. In a third part of the study, gene regulation in apple fruit after inoculation was evaluated in two relatively resistant and two relatively susceptible cultivars using an AryANE chip covering 60K apple transcripts. Validation of the most highly up-and down-regulated genes was undertaken using qPCR. Some genes related to disease resistance, biosynthesis of flavonoids and to cell-wall structure were identified as most likely to be responsible for differences in susceptibility to blue mould. These results will be used to search for candidate genes that can be used in marker-assisted selection in apple breeding.
|
|
| 5. |
- Andersson, Staffan, et al.
(författare)
-
Carotenoid content and composition in rose hips (Rosa spp.) during ripening, determination of suitable maturity marker and implications for health promoting food products
- 2011
-
Ingår i: Food Chemistry. - : Elsevier BV. - 0308-8146 .- 1873-7072. ; 128, s. 689-696
-
Tidskriftsartikel (refereegranskat)abstract
- Carotenoids are important antioxidants and valuable bioactive compounds contributing to the health benefits of different foods, and rose hips are known for high bioactive content. This study investigated the content of carotenoids and chlorophylls in hips from four rose species during the ripening period. Carotenoid content varied greatly between harvesting times, although species and year, and interactions between factors, also played an important role. Some carotenoids were identified only in hips of specific rose species. Some of the investigated compounds decreased (chlorophyll a) or increased (lycopene) consistently over the ripening period and could therefore be useful as maturity markers. An optimal content of total or specific carotenoids, e.g. for food products containing rose hips, might be obtained by proper choice of harvesting time and rose species. (C) 2011 Elsevier Ltd. All rights reserved.
|
|
| 6. |
|
|
| 7. |
- Andersson, Staffan, et al.
(författare)
-
Effect of storage time and temperature on stability of bioactive compounds in aseptically packed beverages prepared from rose hips and sea buckthorn berries
- 2015
-
Ingår i: Agricultural and Food Science. - 1795-1895 .- 1459-6067. ; 24:4, s. 273-288
-
Tidskriftsartikel (refereegranskat)abstract
- Rose hips and sea buckthorn berries contain high amounts of beneficial bioactive compounds. In this study the content and stability of natural vitamins and antioxidants were investigated in two fruit beverages made from rose hip powder, sea buckthorn berry puree and white grape juice concentrate, and wheat germ oil in one of the beverages. Beverages were formulated, pasteurised and filled aseptically in Tetra Brik packages and stored up to 35 days at 4 degrees C or 22 degrees C. Samples were analysed for the content of ascorbic acid, carotenoids, major phenolics, tocochromanols, total phenols and total antioxidant capacity as ferric reducing ability. The largest changes occurred during the first 5 days of storage, thereafter mainly ascorbic acid decreased. In the wheat germ oil supplemented beverage, alpha-tocopherol was more rapidly degraded. Negative correlations between the decrease of some carotenoids and tocochromanols, and the increase of some phenolics, suggest relationships of redox reactions specific to the amount of oil supplemented. From the present study we can conclude that additions of oil to beverages should be carefully selected to avoid oxidations of bioactive compounds. Furthermore, packaging of the beverages should be carried out at higher temperatures and thereafter it should be stored at low temperatures (4 degrees C), which decreased oxidation of all bioactive compounds except ascorbic acid.
|
|
| 8. |
|
|
| 9. |
- Andersson, Staffan, et al.
(författare)
-
Tocopherols in rose hips (Rosa spp.) during ripening
- 2012
-
Ingår i: Journal of the Science of Food and Agriculture. - : Wiley. - 0022-5142 .- 1097-0010. ; 92, s. 2116-2121
-
Tidskriftsartikel (refereegranskat)abstract
- BACKGROUND: Rose hips are used as a food ingredient and in health products. They are rich in various bioactive compounds such as carotenoids and vitamin C, but data on their vitamin E content (tocopherols and tocotrienols) are limited. In this study, four different species ofRosa were analysed for tocopherol and tocotrienol content during ripening in three different years. RESULTS: Only a- and ?-tocopherol were found in the fleshy parts of the rose hips, and the tocopherol content and vitamin E activity varied depending on date of harvesting, species and year. The amount of vitamin E activity differed between species of Rosa and years, whereas the changes during ripening were relatively small. CONCLUSION: The choice of species must be considered if tocopherol content is to be optimised when rose hips are used as a food ingredient. Copyright (C) 2012 Society of Chemical Industry
|
|
| 10. |
- Burri, Stina C.M., et al.
(författare)
-
Antioxidant capacity and major phenol compounds of horticultural plant materials not usually used
- 2017
-
Ingår i: Journal of Functional Foods. - : Elsevier BV. - 1756-4646. ; 38, s. 119-127
-
Tidskriftsartikel (refereegranskat)abstract
- Horticultural plant materials not usually used from onion, carrot, beetroot, sea buckthorn, black and red currants as well as a wastewater powder from olive oil production were analyzed for total phenols content (FC), ferric reducing ability of plasma (FRAP), radical scavenging capacity (ABTS), and for major phenolic compounds by HPLC-MS. Antioxidant capacity and phenol content varied significantly between species and cultivars, with extracts of sea buckthorn leaves being superior. In different species, different phenolic compounds were closely associated with FRAP, ABTS and FC. For instance, hydrolysable tannins were major antioxidants in sea buckthorn whereas quercetin was the major antioxidant in onion peel and skin. This study shows that horticultural plant materials usually left in the field or waste materials from processing may have high antioxidant properties, and that extracts of these materials therefore could be of potential interest for development of antioxidant food additives.
|
|
| 11. |
- Burri, Stina C.M., et al.
(författare)
-
Lipid oxidation inhibition capacity of 11 plant materials and extracts evaluated in highly oxidised cooked meatballs
- 2019
-
Ingår i: Foods. - : MDPI AG. - 2304-8158. ; 8:9
-
Tidskriftsartikel (refereegranskat)abstract
- The underlying mechanism(s) behind the potential carcinogenicity of processed meat is a popular research subject of which the lipid oxidation is a common suspect. Different formulations and cooking parameters of a processed meat product were evaluated for their capacity to induce lipid oxidation. Meatballs made of beef or pork, containing different concentrations of fat (10 or 20 g 100 g−1), salt (2 or 4 g 100 g−1), subjected to differing cooking types (pan or deep frying), and storage times (1, 7, and 14 days), were evaluated using thiobarbituric reactive substances (TBARS). The deep-fried meatball type most susceptible to oxidation was used as the model meat product for testing the lipid oxidation inhibiting capacity of 11 plant materials and extracts, in two concentrations (100 and 200 mg kg−1 gallic acid equivalent (GAE)), measured after 14 days of storage using TBARS. Summer savory lyophilized powder was the most efficient plant material, lowering lipid oxidation to 13.8% and 21.8% at the 200 and 100 mg kg−1 concentration, respectively, followed by a sea buckthorn leaf extract, lowering lipid oxidation to 22.9% at 100 mg kg−1, compared to the meatball without added antioxidants. The lipid oxidation was thus successfully reduced using these natural antioxidants.
|
|
| 12. |
- Burri, Stina C.M., et al.
(författare)
-
Lipid oxidation inhibition capacity of plant extracts and powders in a processed meat model system
- 2020
-
Ingår i: Meat Science. - : Elsevier BV. - 0309-1740 .- 1873-4138. ; 162
-
Tidskriftsartikel (refereegranskat)abstract
- A meat model system was used for screening lipid oxidation inhibiting capacity of diverse horticultural plant materials. In the model, heme-containing sarcoplasmic proteins from the meat water-phase were homogenized with linoleic acid and thiobarbituric reactive substances (TBARS) were measured. 23 Plant materials were investigated at three high (50, 100, and 200 ppm) concentrations and five plant extracts were tested at three low (5, 10, and 20 ppm) concentrations over time. In the high concentration sets, summer savory freeze-dried powder, beetroot leaves extracted with 50% ethanol, and an olive polyphenol powder extracted from wastewater, inhibited oxidation the most effectively. After two weeks and at 200 ppm concentration, oxidation was reduced to 17.2%, 16.6% and 13.5% of the blank sample with no added antioxidants respectively. In the low concentration set, spray dried rhubarb juice inhibited oxidation the most after two weeks at 5 ppm where oxidation was reduced to 68.3% of the blank sample with no added antioxidants.
|
|
| 13. |
- Burri, Stina, et al.
(författare)
-
Processed meat products with added plant antioxidants affect the microbiota and immune response in C57BL/6JRj mice with cyclically induced chronic inflammation
- 2021
-
Ingår i: Biomedicine and Pharmacotherapy. - : Elsevier BV. - 1950-6007 .- 0753-3322. ; 135
-
Tidskriftsartikel (refereegranskat)abstract
- Epidemiological studies have found that there is a correlation between red and processed meat consumption and an increased risk of colorectal cancer. There are numerous existing hypotheses on what underlying mechanisms are causative to this correlation, but the results remain unclear. A common hypothesis is that lipid oxidation, which occurs in endogenous lipids and phospholipids in consumed food, are catalyzed by the heme iron in meat. In this study, five pre-selected plant antioxidant preparations (sea buckthorn leaves and sprouts, summer savory leaves, olive polyphenols, onion skin and lyophilized black currant leaves) were added to a meatball type prone to oxidize (pork meat, 20 % fat, 2% salt, deep-fried and after 2 weeks of storage). Pro-inflammatory markers, neutrophil infiltration and microbiota composition were studied after four months in a chronic inflammation model in C57BL6/J female mice. We found that the bacterial diversity index was affected, as well as initial immunological reactions.
|
|
| 14. |
|
|
| 15. |
- Ekholm, Anders, et al.
(författare)
-
Antioxidant Activity of Polyphenol Rich Fruits on Human Erythrocytes
- 2012
-
Ingår i: Acta Horticulturae. - 0567-7572 .- 2406-6168. ; 926, s. 669-674
-
Konferensbidrag (refereegranskat)abstract
- Diets rich in fruit and vegetables promote health and delay the onset of diseases associated with oxidative stress. The benefit, especially of different berries, has been largely attributed to their content of numerous phytochemicals, and their effects in terms of antioxidant capacity are often evaluated chemically by different methods. We have instead used a highly relevant biological model, a modified CAP-e assay (Cell-based Antioxidant Protection in erythrocytes), to evaluate bioefficacy of antioxidants in Swedish berries. Extracts of twelve fruit and berries were analysed both by chemical and biological analyses: apple (Malus domestica, peel), bilberry (Vaccinium myrtillus), black currant (Ribes nigrum), purple chokeberry (Aronia prunifolia), cranberry (Vaccinium macrocarpon), elderberry (Sambucus nigra), lingonberry (Vaccinium vitis-idaea), raspberry (Rubus idaeus), rose hips (Rosa spp.), sea buckthorn (Hippohae rhamnoides), sloe (Prunus spinosa) and strawberry (Fragaria ananassa). Purple chokeberry, sloe and rose hips showed high antioxidant capacity in the chemical assays. Rose hips showed the highest degree of antioxidant protection also in the biological model, however, chokeberry and sloe showed medium or low protection. Furthermore, strawberry showed overall high protection in the biological assay but low antioxidant capacity in the chemical assays. The chemical and biological models showed different results and future studies of the biological model and in vivo situations are necessary
|
|
| 16. |
- Ekholm, Anders, et al.
(författare)
-
Changes in content of major phenolic compounds during leaf development of sea buckthorn (Hippophae rhamnoides L.)
- 2014
-
Ingår i: Agricultural and Food Science. - : Agricultural and Food Science. - 1459-6067 .- 1795-1895. ; 23, s. 207-219
-
Tidskriftsartikel (refereegranskat)abstract
- Content of total phenolic compounds and antioxidant capacity (FRAP) were investigated in the leaves of three sea buckthorn (Hippophae rhamnoides L.) cultivars: 'Otradnaja', 'Gibrid Pertjika' and 'Ljubitelskaja', at different dates. In addition, major phenolic compounds (catechin, kaempferol, quercetin, epigallocatechin, kaempferol-3-O-glucoside, quercetin-3-O-galactoside, isorhamnetin-3-O-glucoside, rutin, gallic acid, procyanidin monomer glycoside, procyanidin dimer aglycone and hydrolyzable tannins I-III) were determined in 'Ljubitelskaja'. Antioxidant capacity and the content of total phenolic compounds fluctuated during April, May and June, and then increased until the end of July, when the highest values were observed. Total phenolic compounds were strongly correlated with FRAP. Levels were generally higher in 'Ljubitelskaja' than in 'Otradnaja' and 'Gibrid Pertjika'. In 'Ljubitelskaja', hydrolyzable tannins I-III occurred in higher amounts than did any of the other studied phenolic compounds. The developmental stage of the leaves (harvesting date) had a strong influence on content of phenolic compounds and should be carefully considered when harvesting sea buckthorn leaves for different purposes.
|
|
| 17. |
|
|
| 18. |
- Grey, Carl, et al.
(författare)
-
Antiproliferative effects of sea buckthorn (Hippophae rhamnoides L.) extracts on human colon and liver cancer cell lines
- 2010
-
Ingår i: Food Chemistry. - : Elsevier BV. - 1873-7072 .- 0308-8146. ; 120:4, s. 1004-1010
-
Tidskriftsartikel (refereegranskat)abstract
- Sea buckthorn berries contain many bioactive compounds that have anticancer properties. To investigate whether the anti proliferative effects Could be associated with the presence of certain compounds. a sequential extraction was performed. The extraction started with heptane followed by ethyl acetate, ethanol, and water. A second protocol using ethanol:water (1:1) was also used. The contents of the extracts were determined and their effects on cell proliferation were investigated in both Caco-2 and Hep G2 cells. The ethyl acetate fraction was exclusively found to contain high levels of ursolic acid, together with low amounts of phenolics. The ethanol:water extracts contained high levels of phenolic compounds and proanthyocyanidin, but little ursolic acid. When the antiproliferative effects were examined, the strongest inhibitory effect was found in the ethyl acetate extract for the Caco-2 cells and in the ethanol:water extract for the Hep G2 cells. The antiproliferative effects were in both cases dose-dependent and were in the case of the ethyl acetate extract associated with an increase in apoptosis. The results obtained show that the choice of extraction solvent is of considerable importance and that ursolic acid might be more important than the polyphenols in inhibiting the cancer cell proliferation. (C) 2009 Elsevier Ltd. All rights reserved.
|
|
| 19. |
|
|
| 20. |
- Mathew, Sindhu, et al.
(författare)
-
Analysis of carbonyl compounds in sea buckthorn for the evaluation of triglyceride oxidation, by enzymatic hydrolysis and derivatisation methodology
- 2011
-
Ingår i: Food Chemistry. - : Elsevier BV. - 1873-7072 .- 0308-8146. ; 126:3, s. 1399-1405
-
Tidskriftsartikel (refereegranskat)abstract
- Carbonyl compounds formed in sea buckthorn berry (Hippophae rhamnoides) and oil samples as a result of lipid oxidation were determined by enzymatic hydrolysis followed by derivatisation with 2,4-dinitrophenylhydrazine and analysed by LC-UV and electrospray ionisation (ESI) tandem mass spectrometry (MS/MS). Several classes of carbonyl compounds such as saturated, unsaturated, linear and branched aldehydes and ketones, aromatic aldehyde, dicarbonyls and carboxy aldehydes were identified based on fragmentation pattern, molecular weight and retention time. The lower carbonyls such as formaldehyde, acetaldehyde and acetone were found to be predominant in the berry samples and acetaldehyde was found to be the most abundant carbonyl. In the sea buckthorn pulp oil sample, longer aldehydes and carboxy aldehydes dominated, thus clearly demonstrating the benefit of the enzymatic step when analysing oxidation products originating from triglycerides. (C) 2010 Elsevier Ltd. All rights reserved.
|
|
| 21. |
- Muzila, Mbaki, et al.
(författare)
-
Alteration of neutrophil reactive oxygen species production by extracts of Devil's Claw (Harpagophytum)
- 2016
-
Ingår i: Oxidative Medicine and Cellular Longevity. - 1942-0900 .- 1942-0994.
-
Tidskriftsartikel (refereegranskat)abstract
- Harpagophytum, Devil's Claw, is a genus of tuberiferous xerophytic plants native to southern Africa. Some of the taxa are appreciated for their medicinal effects and have been traditionally used to relieve symptoms of inflammation. The objectives of this pilot study were to investigate the antioxidant capacity and the content of total phenols, verbascoside, isoverbascoside, and selected iridoids, as well as to investigate the capacity of various Harpagophytum taxa in suppressing respiratory burst in terms of reactive oxygen species produced by human neutrophils challenged with phorbol myristate acetate (PMA), opsonised Staphylococcus aureus, and Fusobacterium nucleatum. Harpagophytum plants were classified into different taxa according to morphology, and DNA analysis was used to confirm the classification. A putative new variety of H. procumbens showed the highest degree of antioxidative capacity. Using PMA, three Harpagophytum taxa showed anti-inflammatory effects with regard to the PBS control. A putative hybrid between H. procumbens and H. zeyheri in contrast showed proinflammatory effect on the response of neutrophils to F. nucleatum in comparison with treatment with vehicle control. Harpagophytum taxa were biochemically very variable and the response in suppressing respiratory burst differed. Further studies with larger number of subjects are needed to corroborate anti-inflammatory effects of different taxa of Harpagophytum.
|
|
| 22. |
- Muzila, Mbaki, et al.
(författare)
-
Alteration of Neutrophil Reactive Oxygen Species Production by Extracts of Devil’s Claw (Harpagophytum)
- 2016
-
Ingår i: Oxidative Medicine and Cellular Longevity. - : Hindawi Limited. - 1942-0900 .- 1942-0994.
-
Tidskriftsartikel (refereegranskat)abstract
- Harpagophytum,Devil’sClaw, is a genus of tuberiferous xerophytic plants native to southernAfrica. Some of the taxa are appreciated for their medicinal effects and have been traditionally used to relieve symptoms of inflammation.The objectives of this pilot study were to investigate the antioxidant capacity and the content of total phenols, verbascoside, isoverbascoside, and selected iridoids, as well as to investigate the capacity of various Harpagophytum taxa in suppressing respiratory burst in terms of reactive oxygen species produced by human neutrophils challenged with phorbol myristate acetate (PMA), opsonised Staphylococcus aureus, and Fusobacterium nucleatum. Harpagophytum plants were classified into different taxa according to morphology, and DNA analysis was used to confirmthe classification. A putative new variety of H. procumbens showed the highest degree of antioxidative capacity. Using PMA, three Harpagophytum taxa showed anti-inflammatory effects with regard to the PBS control. A putative hybrid between H. procumbens and H. zeyheri in contrast showed proinflammatory effect on the response of neutrophils to F. nucleatum in comparison with treatment with vehicle control. Harpagophytum taxa were biochemically very variable and the response in suppressing respiratory burst differed. Further studies with larger number of subjects are needed to corroborate anti-inflammatory effects of different taxa of Harpagophytum.
|
|
| 23. |
- Muzila, Mbaki, et al.
(författare)
-
Djävulsklon från Afrika
- 2016
-
Ingår i: LTV-fakultetens faktablad.
-
Annan publikation (populärvet., debatt m.m.)abstract
- Nyttjar man naturmedicinska preparat, har man troligen hört talas om djävulsklo från Afrika. I övrigt får denna torrmarksväxt anses tämligen okänd i Sverige. För stora delar av den fattiga befolkningen på landsbygden i Botswana, Namibia och Sydafrika utgör djävulsklo däremot en välkänd och viktig inkomstkälla.
|
|
| 24. |
- Muzila, Mbaki, et al.
(författare)
-
Harpagophytum germplasm varies in tuber peel and pulp content of important phenylpropanoids and iridoids
- 2018
-
Ingår i: South African Journal of Botany. - : Elsevier BV. - 0254-6299 .- 1727-9321. ; 115, s. 153-160
-
Tidskriftsartikel (refereegranskat)abstract
- Tubers of the xerophytic African plant Harpagophytum procumbens are used as an appreciated medicinal drug whereas the value of H. zeyheri remains uncertain. Due to large and sometimes continuous morphological variation, discrimination between these two species can be difficult. In addition, interspecific hybridization may occur and could further complicate the collection of proper plant material for medicinal purposes. Hence the objectives of this study were to 1) study the content of selected secondary metabolites in peel and pulp of Harpagophytum tubers of different taxa, 2) identify possible species-specific differences in content (profile and amount) of selected secondary metabolites, and 3) investigate associations between content of selected secondary metabolites and sample origin. Although composition and content of the studied compounds varied among populations within species, H. procumbens and H. zeyheri had significantly different phytochemical profiles, with putative hybrids sometimes being intermediate and sometimes transgressive. In both peel and pulp the content of isoverbascoside, verbascoside, acetylacteoside and pagoside were higher in putative hybrids and H. procumbens compared with H. zeyheri. The content of the main bioactive compound harpagoside was significantly higher in H. procumbens compared with putative hybrids and H. zeyheri, with both pulp and peel content of H. procumbens being approximately twice as high as the pulp and peel content of putative hybrids. Accurate identification, selection andmultiplication of germplasm with superior qualities should therefore be performed to provide plant material with a high content of bioactive compounds. (c) 2018 SAAB. Published by Elsevier B.V. All rights reserved.
|
|
| 25. |
|
|
| 26. |
- Nybom, Hilde, et al.
(författare)
-
Den skånska äpplemustens terroir
- 2015
-
Ingår i: LTV-fakultetens faktablad.
-
Annan publikation (populärvet., debatt m.m.)abstract
- Idag ser vi ett kraftigt ökande intresse för lokalproducerad mat och dryck. Många konsumenter lägger stor vikt vid vad de konsumerar, varifrån livsmedlen kommer och hur de produceras. I vinsammanhang har man under lång tid använt sig av begreppet terroir för att sammanfatta lokalitetens betydelse för såväl upplevda som mätbara egenskaper. Något motsvarande har inte hittills dokumenterats för svenska äpplen – den viktigaste råvaran för must i Sverige. Finns det något samband mellan var frukten har odlats och mustens kvalitetsegenskaper? Kan konsumenter känna skillnad mellan must från olika odlingar men av samma sort? Hur kan detta kommuniceras? Detta var huvudfrågeställningarna i en pilotstudie vi nyligen genomförde tillsammans med skånska äppelodlare och musterier.
|
|
| 27. |
- Nybom, Hilde, et al.
(författare)
-
Fungal disease and fruit quality in an apple orchard converted from integrated production to organic production
- 2010
-
Ingår i: Journal of Sustainable Agriculture. - : Informa UK Limited. - 1044-0046 .- 1540-7578. ; 34, s. 15-37
-
Tidskriftsartikel (refereegranskat)abstract
- Interest in organic food is increasing among consumers, thus making it possible to improve the profitability of Swedish apples. One way to obtain a swift increase in organic apple production is to convert existing orchards to organic growing. The main objective of this study was to compare the horticultural performance of an apple orchard converted to organic growing with the previous Integrated Fruit Production (IFP). The trial was conducted in the south of Sweden during the years 2000-2002. The accumulated yield for organic 'Aroma' was 66.2 kg/tree compared with 77.9 kg and 99.5 kg for two IFP-treated sections. For 'Karin Schneider,' the yield was 20.7 kg/tree in the organic section, and 21.9 kg and 26.1 kg for the two IFP sections. The lower yield in organic sections was mainly due to a smaller amount of fruit. This reduction may have been caused by the use of a sulphur-containing fungicide, which could have had a fruit-thinning effect. The most important difference between treatments was apparently connected with the use of less efficient fungicides in the organic sections. In these sections, 10% of the fruit was damaged by scab, whereas less than 1% had scab in the IFP sections. Lack of efficient fungicides was also apparent after storage; 8% of organically grown 'Aroma' fruit was affected by the storage disease bull's-eye rot, compared with 0.4% in the IFP sections, while corresponding figures for 'Karin Schneider' were 4% and 0%, respectively. The two cultivars differed considerably from one another in various fruit quality parameters, but no major treatment effects were found in fruit covering colour, ground color, firmness, sugar content or malic acid content. Higher amounts of nitrogen and boron were found in fruit from the IFP sections, but this finding was probably caused by foliar spraying with nutrients.
|
|
| 28. |
- Nybom, Hilde, et al.
(författare)
-
Growing English and French cider apple cultivars in Sweden
- 2020
-
Ingår i: Acta Horticulturae. - 0567-7572 .- 2406-6168. ; , s. 9–14-
-
Konferensbidrag (refereegranskat)abstract
- Production of alcoholic apple cider has a long tradition in especially England, France and Spain. The designated cider apple cultivars grown in these countries are closely related to dessert apples but have a higher content of phenols, with procyanidins (tannins) and possibly other phenolic compounds providing the distinct cider aroma. A recently planted observation trial, together with data collected in a commercial orchard, have provided valuable information on the feasibility of growing English and French cider apple cultivars in southern Sweden. Chemical contents (sugar, acid and phenols) were determined in fruit juice of 21 cider apple cultivars in 2016 and 2017. In spite of the delayed fruit ripening in Sweden, contents were on the whole quite similar to what has been reported previously for the same cultivars in their countries of origin. Large-scale cider production may necessitate storage of the harvested fruit for some weeks or months before juicing, and thus tolerance to storage rots is highly desirable. Despite their higher phenolics content, cider apple cultivars were somewhat more susceptible to blue mold (Penicillium exansum) than dessert cultivars, as determined in fruit inoculation experiments.
|
|
| 29. |
- Nybom, Hilde, et al.
(författare)
-
Review of the Impact of Apple Fruit Ripening, Texture and Chemical Contents on Genetically Determined Susceptibility to Storage Rots
- 2020
-
Ingår i: Plants. - : MDPI AG. - 2223-7747. ; 9
-
Forskningsöversikt (refereegranskat)abstract
- Fungal storage rots like blue mould, grey mould, bull's eye rot, bitter rot and brown rot destroy large amounts of the harvested apple crop around the world. Application of fungicides is nowadays severely restricted in many countries and production systems, and these problems are therefore likely to increase. Considerable variation among apple cultivars in resistance/susceptibility has been reported, suggesting that efficient defence mechanisms can be selected for and used in plant breeding. These are, however, likely to vary between pathogens, since some fungi are mainly wound-mediated while others attack through lenticels or by infecting blossoms. Since mature fruits are considerably more susceptible than immature fruits, mechanisms involving fruit-ripening processes are likely to play an important role. Significant associations have been detected between the susceptibility to rots in harvested fruit and various fruit maturation-related traits like ripening time, fruit firmness at harvest and rate of fruit softening during storage, as well as fruit biochemical contents like acidity, sugars and polyphenols. Some sources of resistance to blue mould have been described, but more research is needed on the development of spore inoculation methods that produce reproducible data and can be used for large screenings, especially for lenticel-infecting fungi.
|
|
| 30. |
- Nybom, Hilde, et al.
(författare)
-
The Systematics, Reproductive Biology, Biochemistry, and Breeding of Sea Buckthorn—A Review
- 2023
-
Ingår i: Genes. - 2073-4425. ; 14
-
Forskningsöversikt (refereegranskat)abstract
- Both the fruit flesh and seeds of sea buckthorn have multiple uses for medicinal and culinary purposes, including the valuable market for supplementary health foods. Bioactive compounds, such as essential amino acids, vitamins B, C, and E, carotenoids, polyphenols, ursolic acid, unsaturated fatty acids, and other active substances, are now being analyzed in detail for their medicinal properties. Domestication with commercial orchards and processing plants is undertaken in many countries, but there is a large need for improved plant material with high yield, tolerance to environmental stress, diseases, and pests, suitability for efficient harvesting methods, and high contents of compounds that have medicinal and/or culinary values. Applied breeding is based mainly on directed crosses between different subspecies of Hippophae rhamnoides. DNA markers have been applied to analyses of systematics and population genetics as well as for the discrimination of cultivars, but very few DNA markers have as yet been developed for use in selection and breeding. Several key genes in important metabolic pathways have, however, been identified, and four genomes have recently been sequenced.
|
|
| 31. |
- Olsson, Viktoria, et al.
(författare)
-
Smoothie kan förbättra uppmärksamheten hos skolbarn!
- 2015
-
Ingår i: LTV-fakultetens faktablad.
-
Annan publikation (övrigt vetenskapligt/konstnärligt)abstract
- Kan en dryck i form av en konceptuell skånsk "smart smoothie", serverad före lunch, dämpa hunger och förbättra uppmärksamhet hos skolbarn? Detta var huvudfrågeställningarna i detta pilotprojekt som omfattade såväl produktutveckling och tillverkning som interventionsstudie och enkätundersökningar.
|
|
| 32. |
|
|
| 33. |
- Rosander, Ulla, et al.
(författare)
-
Could a smoothie, rich in nutrients and bioactive substances, improve school performance?
- 2015
-
Ingår i: Annals of Nutrition and Metabolism. - 0250-6807 .- 1421-9697. ; 67:Suppl. 1, s. 212-
-
Tidskriftsartikel (refereegranskat)abstract
- Introduction: Fruits and vegetables contain vitamins, minerals and other bioactive substances, which are important for intellectual performance. In a previous study it was shown that approximately two third of the pupils were hungry the last lesson before lunch. The average fruit and vegetable intake at lunch was much lower than the recommendations.Objectives: The purpose of this pilot study was to investigate effect on attention and school performance of a vegetable smoothie, rich in berries, fruits and vegetables, served at the mid-morning brake.Method / Design: In total 250 Swedish children aged 10-12 years participated. The study was designed as a cross-over trial with two study periods of ten schooldays. The children were randomly divided into two groups and were administered either an active smoothie (smoothie 1; group A) or a fruit-based placebo with the same energy content (smoothie 2; group B). Both smoothies were designed to provide 5% of the daily energy. After a three week wash-out period, group A was administered smoothie 2 and group B, smoothie 1. Statistical tests were performed using SPSS package, version 22.0, using Independent-Samples T test. Analysis included processing speed (PTO), concentration performance (CP) and percentages of error (Ep) as assessed by the D2-testResults: Preliminary analyses indicate that PTO and CP increased during the intervention period, whilst Ep decreased, for both groups. The effect was stronger in the group drinking the active smoothie, than in the group drinking the placebo. The effect might partly be caused by the addition of water and energyConclusions: Attention, and thereby also school performance, may be improved by mid-morning consumption of a smoothie containing water, energy and preferably nutrients and other bioactive substances.
|
|
| 34. |
- Rosander, Ulla, et al.
(författare)
-
Could a smoothie, rich in nutrients and bioactive substances, improve school performance?
- 2015
-
Ingår i: Annals of Nutrition and Metabolism. - : S. Karger AG. - 0250-6807 .- 1421-9697. ; 67:Suppl. 1
-
Tidskriftsartikel (refereegranskat)abstract
- Introduction: Fruits and vegetables contain vitamins, minerals and other bioactive substances, which are important for intellectual performance. In a previous study it was shown that approximately two third of the pupils were hungry the last lesson before lunch. The average fruit and vegetable intake at lunch was much lower than the recommendations. Objectives: The purpose of this pilot study was to investigate effect on attention and school performance of a vegetable smoothie, rich in berries, fruits and vegetables, served at the mid-morning brake. Method / Design: In total 250 Swedish children aged 10-12 years participated. The study was designed as a cross-over trial with two study periods of ten schooldays. The children were randomly divided into two groups and were administered either an active smoothie (smoothie 1; group A) or a fruit-based placebo with the same energy content (smoothie 2; group B). Both smoothies were designed to provide 5% of the daily energy. After a three week wash-out period, group A was administered smoothie 2 and group B, smoothie 1. Statistical tests were performed using SPSS package, version 22.0, using Independent-Samples T test. Analysis included processing speed (PTO), concentration performance (CP) and percentages of error (Ep) as assessed by the D2-test Results: Preliminary analyses indicate that PTO and CP increased during the intervention period, whilst Ep decreased, for both groups. The effect was stronger in the group drinking the active smoothie, than in the group drinking the placebo. The effect might partly be caused by the addition of water and energy Conclusions: Attention, and thereby also school performance, may be improved by mid-morning consumption of a smoothie containing water, energy and preferably nutrients and other bioactive substances.
|
|
| 35. |
- Rosander, Ulla, et al.
(författare)
-
Food'n fruit - promoting healthier eating at school : could a smoothie, rich in nutrients and bioactive substances, improve school performance?
- 2015
-
Konferensbidrag (refereegranskat)abstract
- Effect on attention of a vegetable smoothie, rich in berries, fruitsand vegetables, served at the school mid-morning brake. ViktoriaOhlsson. Kristianstad UniversityPurpose:The purpose of this pilot study was to investigate effect onattention of a vegetable smoothie, rich in berries, fruits andvegetables, served at the mid-morning brake. The smoothie wasdesigned to provide only 5% of the daily energy. The effect wasassessed by the D2-test of attention.Participants and setting:Pupils, aged 10 to 12 years, from twelve school classes in southernSweden, were invited to participate in the study. In total 250children participated. Children suffering from serious food allergiesor food intolerance were excluded from the study.Data collection:The study was designed as a cross-over trial with two studyperiods of ten schooldays. The children were randomly dividedinto two groups and were administered either an active smoothie(smoothie 1; group A) or a fruit-based placebo with the sameenergy content (smoothie 2; group B). After a three week washoutperiod, group A was administered smoothie 2 and group B,smoothie 1.Prior to the study, all children answered a questionnaire about theirconsumption of fruit, berries and vegetables, physical activity habitand and their perceived hunger during the school day. Age, heightand weight was also recorded.Data analysis:Analysis of the data focused on concentration performance asassessed by the D2-test.
|
|
| 36. |
- Rosander, Ulla, et al.
(författare)
-
Food'n fruit - promoting healthier eating at school : could a smoothie, rich in nutrients and bioactive substances, improve school performance?
- 2015
-
Konferensbidrag (övrigt vetenskapligt/konstnärligt)abstract
- Effect on attention of a vegetable smoothie, rich in berries, fruits and vegetables, served at the school mid-morning brake. Viktoria Ohlsson. Kristianstad University Purpose: The purpose of this pilot study was to investigate effect on attention of a vegetable smoothie, rich in berries, fruits and vegetables, served at the mid-morning brake. The smoothie was designed to provide only 5% of the daily energy. The effect was assessed by the D2-test of attention. Participants and setting: Pupils, aged 10 to 12 years, from twelve school classes in southern Sweden, were invited to participate in the study. In total 250 children participated. Children suffering from serious food allergies or food intolerance were excluded from the study. Data collection: The study was designed as a cross-over trial with two study periods of ten schooldays. The children were randomly divided into two groups and were administered either an active smoothie (smoothie 1; group A) or a fruit-based placebo with the same energy content (smoothie 2; group B). After a three week washout period, group A was administered smoothie 2 and group B, smoothie 1. Prior to the study, all children answered a questionnaire about their consumption of fruit, berries and vegetables, physical activity habit and and their perceived hunger during the school day. Age, height and weight was also recorded. Data analysis: Analysis of the data focused on concentration performance as assessed by the D2-test.
|
|
| 37. |
- Rosander, Ulla, 1954-, et al.
(författare)
-
Methodological considerations in a pilot study on the effects of a berry enriched smoothie on children's performance in school
- 2016
-
Ingår i: Food & Nutrition Research. - 1654-6628 .- 1654-661X. ; 60:1
-
Tidskriftsartikel (övrigt vetenskapligt/konstnärligt)abstract
- Background and aims: In many countries, the consumption of fruit, berries, and vegetables is about half the recommended. Berries contain bioactive compounds that may affect cognitive functions. School children are often hungry and thirsty during the lectures before lunch and this affects performance. Could a berry-smoothie decrease thirst and hunger, and thereby affect school performance? The aim was to investigate if a cross-over design can be used to study the effects of a smoothie on performance in a school setting.Methods: Methodological challenges included developing an appetizing berry-smoothie and choosing a suitable experimental design that could be adapted to school conditions.In the pilot study, 236 Swedish children aged 10–12 years participated in a cross-over design and were administered either a berry-smoothie or a fruit-based placebo after the midmorning break. Both beverages provided 5% of the daily energy intake. Performance was assessed using the d2 Test of Attention measuring attention span and concentration. Statistical analyses were performed using the Wilcoxon signed rank test in StatXact v 10.3.Results: The consumption of both the smoothie and the placebo increased the attention span and concentration significantly.Conclusion: The children's performance in the d2 Test of Attention was positively affected by beverage consumption. The effect was attributed to the supplementation of water and energy. In this design, the study did not permit any conclusive results regarding the effect of bioactive compounds on performance. In a coming study, a third group, receiving no beverage, should be included aiming to identify the cause of the effect.
|
|
| 38. |
- Rosander, Ulla, et al.
(författare)
-
Methodological considerations in a pilot study on the effects of a berry enriched smoothie on children’s performance in school
- 2017
-
Ingår i: Food & Nutrition Research. - : Taylor & Francis. ; 61:1
-
Tidskriftsartikel (refereegranskat)abstract
- Berries contain bioactive compounds that may affect children’s cognitive function positively, while hunger and thirst during lessons before lunch affect academic performance negatively. This pilot study addresses methodological challenges in studying if a berry smoothie, offered to schoolchildren as a mid-morning beverage, affects academic performance.The objective was to investigate if a cross-over design can be used to study these effects in a school setting.Therefore, in order to investigate assay sensitivity, 236 Swedish children aged 10–12 years were administered either a berry smoothie (active) or a fruit-based control beverage after their mid-morning break. Both beverages provided 5% of child daily energy intake. In total, 91% of participants completed the study. Academic performance was assessed using the d2 test of attention. Statistical analyses were performed using the Wilcoxon signed rank test in StatXact v 10.3.The results showed that the children consumed less of the active berry smoothie than the control (154 g vs. 246 g). Both beverages increased attention span and concentration significantly (p = 0.000). However, as there was no significant difference (p = 0.938) in the magnitude of this effect between the active and control beverages, the assay sensitivity of the study design was not proven. The effect of the beverages on academic performance was attributed the supplementation of water and energy.Despite careful design, the active smoothie was less accepted than the control. This could be explained by un-familiar sensory characteristics and peer influence, stressing the importance of sensory similarity and challenges to perform a study in school settings. The employed cross-over design did not reveal any effects of bioactive compound consumption on academic performance. In future studies, the experimental set up should be modified or replaced by e.g. the parallel study design, in order to provide conclusive results.
|
|
| 39. |
- Rosander, Ulla, et al.
(författare)
-
Methodological considerations in a pilot study on the effects of a berry enriched smoothie on children’s performance in school
- 2017
-
Ingår i: Food & Nutrition Research. - : SNF Swedish Nutrition Foundation. - 1654-6628 .- 1654-661X. ; 61:1
-
Tidskriftsartikel (refereegranskat)abstract
- Berries contain bioactive compounds that may affect children’s cognitive function positively, while hunger and thirst during lessons before lunch affect academic performance negatively. This pilot study addresses methodological challenges in studying if a berry smoothie, offered to schoolchildren as a mid-morning beverage, affects academic performance. The objective was to investigate if a cross-over design can be used to study these effects in a school setting. Therefore, in order to investigate assay sensitivity, 236 Swedish children aged 10–12 years were administered either a berry smoothie (active) or a fruit-based control beverage after their mid-morning break. Both beverages provided 5% of child daily energy intake. In total, 91% of participants completed the study. Academic performance was assessed using the d2 test of attention. Statistical analyses were performed using the Wilcoxon signed rank test in StatXact v 10.3. The results showed that the children consumed less of the active berry smoothie than the control (154 g vs. 246 g). Both beverages increased attention span and concentration significantly (p = 0.000). However, as there was no significant difference (p = 0.938) in the magnitude of this effect between the active and control beverages, the assay sensitivity of the study design was not proven. The effect of the beverages on academic performance was attributed the supplementation of water and energy. Despite careful design, the active smoothie was less accepted than the control. This could be explained by un-familiar sensory characteristics and peer influence, stressing the importance of sensory similarity and challenges to perform a study in school settings. The employed cross-over design did not reveal any effects of bioactive compound consumption on academic performance. In future studies, the experimental set up should be modified or replaced by e.g. the parallel study design, in order to provide conclusive results.
|
|
| 40. |
- Rosander, Ulla, et al.
(författare)
-
Methodological considerations in a pilot study on the effects of a berry enriched smoothie on children's performance in school
- 2016
-
Ingår i: Food & Nutrition Research. - : SNF Swedish Nutrition Foundation. - 1654-6628 .- 1654-661X.
-
Konferensbidrag (övrigt vetenskapligt/konstnärligt)abstract
- Background and aims: In many countries, the consumption of fruit, berries, and vegetables is about half the recommended. Berries contain bioactive compounds that may affect cognitive functions. School children are often hungry and thirsty during the lectures before lunch and this affects performance. Could a berry-smoothie decrease thirst and hunger, and thereby affect school performance? The aim was to investigate if a cross-over design can be used to study the effects of a smoothie on performance in a school setting. Methods: Methodological challenges included developing an appetizing berry-smoothie and choosing a suitable experimental design that could be adapted to school conditions. In the pilot study, 236 Swedish children aged 10–12 years participated in a cross-over design and were administered either a berry-smoothie or a fruit-based placebo after the midmorning break. Both beverages provided 5% of the daily energy intake. Performance was assessed using the d2 Test of Attention measuring attention span and concentration. Statistical analyses were performed using the Wilcoxon signed rank test in StatXact v 10.3. Results: The consumption of both the smoothie and the placebo increased the attention span and concentration significantly. Conclusion: The children's performance in the d2 Test of Attention was positively affected by beverage consumption. The effect was attributed to the supplementation of water and energy. In this design, the study did not permit any conclusive results regarding the effect of bioactive compounds on performance. In a coming study, a third group, receiving no beverage, should be included aiming to identify the cause of the effect.
|
|
| 41. |
- Rosander, Ulla, 1954-, et al.
(författare)
-
Nutrient content of consumed elementary school lunches : a pilot study from Sweden
- 2013
-
Ingår i: Journal of Child Nutrition & Management. - 1559-5676. ; 37:2
-
Tidskriftsartikel (refereegranskat)abstract
- Purpose/ObjectivesPurpose was to investigate the nutrient content of Swedish school meals consumed by students in the context of national recommendations regarding food composition and intake.Methods Composite samples of lunch meals consumed by six students during a five-day period were collected using the double portion method and analyzed for total energy, macronutrients, and micronutrients.ResultsThe consumed meals contained lower than recommended levels of energy, protein, omega-3 fatty acids, carbohydrates, vitamin C, folate, and vitamin E, whereas the amount of sodium consumed was too high.Applications to Child Nutrition ProfessionalsThe low protein content of students’ diets indicates that more food should be consumed. Students also specifically need to increase their consumption of food rich in omega-3 fatty acids and carbohydrates, while higher intake of vitamin C and vitamin E can be achieved via increased vegetable consumption. Dairy products should be included in the meal or as a supplement in order to ensure sufficient intake of riboflavin, calcium and magnesium. Levels of sodium should be reduced.
|
|
| 42. |
- Rosander, Ulla, et al.
(författare)
-
Nutrient content of consumed elementary school lunches : a pilot study from Sweden
- 2013
-
Ingår i: Journal of Child Nutrition & Management. - 1559-5676. ; 37:2
-
Tidskriftsartikel (refereegranskat)abstract
- Purpose/ObjectivesPurpose was to investigate the nutrient content of Swedish school meals consumed by students in the context of national recommendations regarding food composition and intake. Methods Composite samples of lunch meals consumed by six students during a five-day period were collected using the double portion method and analyzed for total energy, macronutrients, and micronutrients. ResultsThe consumed meals contained lower than recommended levels of energy, protein, omega-3 fatty acids, carbohydrates, vitamin C, folate, and vitamin E, whereas the amount of sodium consumed was too high. Applications to Child Nutrition ProfessionalsThe low protein content of students’ diets indicates that more food should be consumed. Students also specifically need to increase their consumption of food rich in omega-3 fatty acids and carbohydrates, while higher intake of vitamin C and vitamin E can be achieved via increased vegetable consumption. Dairy products should be included in the meal or as a supplement in order to ensure sufficient intake of riboflavin, calcium and magnesium. Levels of sodium should be reduced.
|
|
| 43. |
- Rumpunen, Kimmo
(författare)
-
A multinational approach for conserving the European genetic resources of currants and gooseberry
- 2012
-
Ingår i: Acta Horticulturae. - 0567-7572 .- 2406-6168. ; 926, s. 27-32
-
Konferensbidrag (refereegranskat)abstract
- A multinational project, RIBESCO, was designed in order to improve the characterisation and conservation of the north and central European Ribes germplasm. The four-year project was initiated in 2007 by nine partners in eight EU countries within the Baltic Sea Region. In the project, a decentralised core collection of cultivated Ribes species was established, including blackcurrant (R. nigrum), red and white currant (R. rubrum coll.) and gooseberry (R. uva-crispa). The germplasm accessions maintained in the national ex situ collections were subjected to the phenotypic characterisation using trans-nationally defined descriptors, thereby bringing together the phenotypic information of approximately 1400 Ribes accessions. Genotypes were selected into the core collection partly on the basis of the values and diversity defined by the phenotypic characterisation and partly on the basis of agronomic, historical or other cultural values. The quality of berries was one selection criterion. In addition, it was assured that germplasm representing a high level of genetic variation was selected. The molecular analyses were conducted utilising both previously published SSR markers and new markers developed in the project. A genotypic evaluation of over 800 accessions was carried out. Duplicate and mislabelled accessions were found in the existing collections. Some previously unnamed accessions were also identified as known cultivars. For the conservation of the selected core collection, ex situ field collections were established and cryopreservation for long-term storage was developed. The project promoted both the preservation and use of fruit genetic material.
|
|
| 44. |
|
|
| 45. |
- Rumpunen, Kimmo, et al.
(författare)
-
Antioxidative protection of dietary rosehips and polyphenol active lactobacilli in mice subjected to intestinal oxidative stress by ischemia reperfusion
- 2009
-
Ingår i: Microbial Ecology in Health and Disease. - : Informa UK Limited. - 0891-060X .- 1651-2235. ; 21, s. 193-202
-
Tidskriftsartikel (refereegranskat)abstract
- Background and aim: Ischemia-reperfusion (I/R) in the intestines activates leukocytes and reactive oxygen species (ROS) and leads to lipid peroxidation and DNA damage. Rosehips have a high content of polyphenols and might prevent lipid peroxidation. SomeLactobacillusspecies are capable of degrading polyphenols to simpler and non-toxic constituents, sometimes with enhanced antioxidative capacity.Methods: A mixture of eight polyphenol activeLactobacillusstrains (LAB) were administered in feed together with rosehips ofRosa canina(RC) orRosa pimpinellifolia(RP) to mice to clarify the influence on I/R-induced injury of the intestinal tract. I/R injury was induced by holding the superior mesenteric artery clamped for 30 min followed by reperfusion for 240 min. Tissue and content from colon and cecum were analyzed.Results: Administration of LAB or RP significantly decreased malondialdehyde (MDA) levels in colonic tissue (p=0.007 andp=0.035, respectively). RC contained significantly higher concentrations of monomer and dimer aglycones, glycosides, and catechin than RP, while cyanidin-3-O-glycoside was significantly higher in RP. There was a tendency towards higher values of phenolics in the mice fed either of the two rose species in combination with bacterial mixture than the mice fed the rose species alone. Total antioxidative capacity and total phenolic content were higher in the groups fed rosehips in combination with LAB than rosehips alone, although these differences were not significant.Conclusion: LAB showed metabolic activity towards polyphenols in rosehips. There is an indication that LAB together with rosehips, especiallyR. pimpinellifolia, may prevent and suppress I/R injury in the intestines.Read More:http://informahealthcare.com/doi/abs/10.3109/08910600903429045
|
|
| 46. |
|
|
| 47. |
|
|
| 48. |
- Rumpunen, Kimmo, et al.
(författare)
-
Bra stabilitet hos goda drycker med hög halt naturliga vitaminer och antioxidanter
- 2012
-
Ingår i: LTJ-fakultetens faktablad.
-
Annan publikation (populärvet., debatt m.m.)abstract
- I detta faktablad sammanfattas resultat av ett partnerskapsprojekt där forskare vid SLU och Lunds Universitet i samverkan med Skånemejerier, Kiviks Musteri och Ideon Agro Food, utvecklat och karaktäriserat modelldrycker som är naturligt rika på vitaminer och antioxidanter baserade på nypon, havtorn och vetegroddolja. Modelldryckerna pastöriserades och förpackades aseptiskt varefter förändringar i innehållet av en rad naturliga vattenlösliga och fettlösliga antioxidanter såsom karotenoider (inklusive pro-vitamin A), askorbinsyra (vitamin C), tokoferoler (vitamin E), olika fenoler och total antioxidativ kapacitet studerades under lagring vid olika temperaturer. Likaså undersöktes dryckernas benägenhet att oxidera.
|
|
| 49. |
|
|
| 50. |
- Rumpunen, Kimmo
(författare)
-
Chromatographic characterization of juice in fruits of different Japanese quince (Chaenomeles japonica L.) genotypes cultivated in Sweden
- 2020
-
Ingår i: Emirates Journal of Food and Agriculture. - : Faculty of Food and Agriculture, United Arab Emirates University. - 2079-052X .- 2079-0538. ; 32, s. 816-825
-
Tidskriftsartikel (refereegranskat)abstract
- The juice in fruits of 19 genotypes of Japanese quince (Chaenomeles japonica), representing plant breeding material, was characterised using high performance liquid chromatography. The juice was extracted by halving and squeezing the fruit. Samples of Japanese quince juice were always analysed fresh. The main compounds found were sugars: glucose (131-1056 mg 100 ml(-1)), fructose (351-2515 mg 100 ml(-1)) and sorbitol (10-367 mg 100 ml(-1)); organic acids: malic acid (2.27-4.84 g 100 ml(-1)) and quinic acid (0.50-2.50 g 100 ml(-1)); amino acids: aspartic acid (0.8-10.7 mg 100 ml(-1)), asparagine (0.2-36.3 mg 100 ml(-1)) and glutamic acid (6.2-17.7 mg 100 ml(-1)); the cation potassium (145-214 mg 100 ml(-1)) and the anion fluoride (21-122 mg 100 ml(-1)). These results on composition suggest that Japanese quince may be an interesting raw material source of valuable substances and its juice an ingredient for the food industry. A principal components analysis separated the Japanese quince genotypes, thus indicating a clear difference in the chemical composition of the juice.
|
|
