| 1. |
- Eiben, G, et al.
(författare)
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Secular trends in diet among elderly Swedes : cohort comparisons over three decades
- 2004
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Ingår i: Public Health Nutrition. - 1368-9800 .- 1475-2727. ; 7:5, s. 637-644
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Tidskriftsartikel (refereegranskat)abstract
- Objective: The purpose of this study was to compare dietary practices among different birth cohorts of 70-year-old Swedes, who were examined between 1971 and 2000.Setting: Göteborg, Sweden.Design: Four population-based samples of 1360 70-year-olds, born in 1901, 1911, 1922 and 1930, have undergone health examinations and dietary assessments over a period of almost three decades. One-hour diet history (DH) interviews were conducted in 1971, 1981, 1992 and 2000 with a total of 758 women and 602 women. The formats and contents of the dietary examinations were similar over the years. Statistical analysis of linear trends was conducted, using year of examination as the independent variable, to detect secular trends in food and nutrient intakes across cohorts.Results: At the 2000 examination, the majority of 70-year-olds consumed nutritionally adequate diets. Later-born cohorts consumed more yoghurt, breakfast cereals, fruit, vegetables, chicken, rice and pasta than earlier-born cohorts. Consumption of low-fat spread and milk also increased, along with that of wine, light beer and candy. In contrast, potatoes, cakes and sugar were consumed less in 2000 than in 1971. The ratio of reported energy intake to estimated basal metabolic rate did not show any systematic trend over time in women, but showed a significant upward trend in men.Conclusions: The diet history method has captured changes in food selections in the elderly without changing in general format over three decades. Dietary quality has improved in a number of ways, and these findings in the elderly are consistent with national food consumption trends in the general population.
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| 2. |
- Jacobsson, A, et al.
(författare)
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Influence of packaging material and storage condition on the sensory quality of broccoli
- 2004
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Ingår i: Food Quality and Preference. - 0950-3293 .- 1873-6343. ; 15:4, s. 301-310
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Tidskriftsartikel (refereegranskat)abstract
- The sensory quality of broccoli stored in modified atmosphere packages was studied. Oriented polypropylene (OPP), polyvinyl chloride (PVC) and low-density polyethylene (LDPE) were used as packaging materials. The LDPE contained an ethylene-absorbing sachet. The samples were stored for I week, either at a constant temperature of 10 degreesC or for 3 days at 4 degreesC, followed by 4 days at 10 degreesC. The atmospheres that were developed inside the different packaging materials during storage differed significantly. After storage, the broccoli was evaluated both raw and cooked using a triangle test and a quantitative descriptive analysis. The triangle test showed significant differences in the smell of broccoli stored in different packaging materials after cooking. No differences were detected in the raw broccoli. The quantitative descriptive analysis showed significant differences in the fresh smell and flavour, the chewing resistance, and the crispness, between samples after cooking. Overall, including all the sensory properties studied, broccoli packaged in LDPE (5% O-2 7% CO2) that contained an ethylene absorber was perceived to be the sample most similar to fresh broccoli. There were no differences in weight loss between broccoli stored in the different packaging materials.
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| 3. |
- Jacobsson, A, et al.
(författare)
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The effect of packaging material on the sensory properties of broccoli
- 2003
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Ingår i: Proceedings of the international conference Postharvest Unlimited. - 9066059060 ; , s. 91-95
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Konferensbidrag (refereegranskat)abstract
- Three different commercially available polymeric films were studied to determine their effect on the sensory properties of fresh broccoli (Brassica oleracea L. var. Italica cv. 'Marathon'). The polymer materials investigated were oriented polypropylene (OPP), polyvinyl chloride (PVC) and one low density polyethylene (LDPE) which contained an ethylene absorber. The fresh broccoli was packaged and stored for one week at 10degreesC or 3 days at 4degreesC followed by 4 days at 10degreesC. The oxygen and carbon dioxide concentrations inside the packages were monitored during storage. After storage the broccoli was evaluated according to sensory analyses, i.e. triangle test and quantitative descriptive analysis, by an analytical panel. The panel judged the broccoli according to smell, taste, texture and appearance. The triangle test showed significant differences between the smell of the broccoli samples, stored in the different packaging materials, when cooked. However, no differences between the raw broccoli, stored in the different packaging materials could be detected. The quantitative descriptive analysis showed that the following attributes; fresh smell and taste, chewing resistance, and crispness, differed significantly between the packaged broccoli when cooked. The appearance was shown to be the sensory property of broccoli most affected by the storage conditions, i.e. packaging material used and storage temperature. The results indicated the importance of the packaging material for maintaining the broccoli quality. However, one packaging material that was able to maintain all the studied sensory properties could not be identified.
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| 4. |
- Janestad, H, et al.
(författare)
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Modelling of dynamic flavour properties with ordinary differential equations
- 2000
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Ingår i: Food Quality and Preference. - 0950-3293 .- 1873-6343. ; 11:4, s. 323-329
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Tidskriftsartikel (refereegranskat)abstract
- The most common way to analyse sensory dynamic measurements (time-intensity, TI) is to extract some characteristic parameters from the resulting curve such as 'intensity maximum' and 'area under the curve'. In order to get more information from TI data, a general mathematical model was developed. The model was based on the theory for ordinary differential equations. The solutions were characterised by their eigenvalues, which might be correlated to recipe and process. As an example, the temporal perception of chocolate flavour has been measured and modelled. In addition the classical characteristic TI parameters could easily be calculated by the model.
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| 5. |
- Sepp, Hanna, 1968-
(författare)
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Pre-school children's food habits and meal situation : factors influencing the dietary intake at pre-school in a Swedish municipality
- 2002
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Doktorsavhandling (övrigt vetenskapligt/konstnärligt)abstract
- A pre-school-based dietary survey, using seven-day records, focus group interviews and semi-structured interviews, was carried out in a suburban area of Stockholm. The overall objective was to investigate the individual food and nutrient intake of pre-school children at all meals during the day, as well as factors that might influence children’s intake. The average energy and nutrient intake per day for the whole week was satisfactory for the 109 pre-school children, but the temporal distribution throughout the day was skewed. The energy and nutrient intakes of food at the pre-school were lower than recommended. This was, however, compensated for by meals eaten at home. The children had a more varied food intake during weekdays than weekend days. This study has not provided any evidence to support the selection of water versus milk as a preferable lunch beverage in terms of pre-school children's total milk consumption and general dietary quality. However, the dietary analyses showed that there could be a reason to limit pre-school children’s daily milk and fermented milk intake to half a litre, according to the existing guidelines. The children associated food and eating with rules and norms. They did not categorise food as good or bad, as adults often do, but as "food" and "non-food"; for example, sweets were not food. The method used in this study, the focus group interview, was judged to be a useful tool for exploring how children think about and jointly reflect upon food. The role of the teacher had changed over the past years and they had not yet found a solid ground for integrating food and meals into their everyday work.
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| 6. |
- Sepp, Hanna, 1968-, et al.
(författare)
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The contribution of food groups to the nutrient intake and food pattern among pre-school children
- 2002
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Ingår i: Food Quality and Preference. - 0950-3293 .- 1873-6343. ; 13:2, s. 107-116
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Tidskriftsartikel (refereegranskat)abstract
- A pre-school-based dietary survey, using 7-day records, was carried out in Sweden in the Stockholm area at 12 pre-schools; the survey included 109 of 131 participating children. The present study was designed to describe weekday and weekend food patterns, i.e. the frequency of consumption of food items and the contribution of energy and nutrient intake from different food groups, and to explore how foods are related in pre-school children's diet. At pre-school, all children except one ate vegetables and fruits about once a day, and all children consumed, on average, milk and cheese, meat products, bread and breakfast cereals and fats more than once a day. Milk and cheese products, bread and breakfast cereals and meat products were the primary source of energy and protein. The main source of dietary fibre was bread and breakfast cereals, potatoes and fruits. The “low-nutrient foods”, e.g. confectionery, buns, and soft drinks, contributed 20% of the energy during the weekdays and 33% during the weekend days. When all food groups (g/MJ) were analysed simultaneously in a Principal Components Analysis (PCA), 52% of the variation was explained. The food consumption data were described using four food clusters: milk and cheese products; bread and breakfast cereals; meat, potatoes and cooked cereals; confectionery, buns and soft drinks. In conclusion, the PCA seems to be a useful visual tool for elucidating how foods are related in the diet.
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| 7. |
- Sepp, Hanna, 1968-, et al.
(författare)
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The role of milk in Swedish pre-school children's diet
- 2001
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Ingår i: Scandinavian Journal of Nutrition/Næringsforskning. - 1102-6480 .- 1651-2359. ; 45, s. 131-136
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Tidskriftsartikel (refereegranskat)abstract
- Objective: A pre-school-based dietary survey, was carried out in Sweden in the Stockholm area. The aim was to study the role of milk in pre-school children's diet, especially the effect of milk versus water as lunch beverage at pre-school. Design: Food and nutrient intake were quantified using seven day-records in order to compare two serving systems at pre-schools, one offering milk as lunch beverage, the other water and to analyse the quality of the diet of low and high consumers of milk. Results: No significant differences between the children's food, nutrient or energy intake were attributable to the serving system at the pre-school. The low milk consumers had a more even distribution of energy intake from different food groups than did the high milk consumers. Conclusions: This comparative study has provided no evidence to support the selection of water versus milk as a preferable lunch beverage in terms of pre-school children's total milk consumption and general dietary quality. The dietary analyses showed that there might be a reason to limit pre-school children's daily milk and fermented milk intake to half a litre if the refined sugar level is limited.
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| 8. |
- Wendin, Karin, 1963-, et al.
(författare)
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Dynamic analyses of sensory and microstructural properties of cream cheese
- 2000
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Ingår i: Food Chemistry. - 0308-8146 .- 1873-7072. ; 71:3, s. 363-378
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Tidskriftsartikel (refereegranskat)abstract
- Flavour and texture in cream cheese depend on the microstructure. The objective of this work was to study the influence of fat content, salt content and homogenisation pressure on the microstructure and sensory properties of cream cheese. Twelve types of cream cheese were produced according to a full-factorial design, whereby the fat content was set at three levels, the salt content at two levels and the homogenisation pressure at two levels. The cheeses were analysed by a sensory panel, using both quantitative descriptive profiling and time intensity (T1) evaluation, and by using a confocal laser scanning microscope, CLSM, whereby the microstructure of the cheeses was analysed. All the design parameters had a significant influence on the flavour and texture, although fat had the largest effect. Interaction effects between the design parameters were also found to influence the character of cream cheese. The results showed that it is possible to create a cream cheese with lower fat content and with sensory attributes similar to the attributes in cream cheese with high fat content, by modification of production parameters.
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| 9. |
- Wendin, Karin, 1963-, et al.
(författare)
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Influences of fat, thickener and emulsifier contents on salad dressing : Static and dynamic sensory and rheological analyses
- 2001
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Ingår i: Lebensmittel-Wissenschaft + Technologie. - 0023-6438 .- 1096-1127. ; 34:4, s. 222-233
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Tidskriftsartikel (refereegranskat)abstract
- The effects of contents of fat, thickener and emulsifier in salad dressing were investigated. Twelve types of dressings were produced according to a full factorial design, whereby the fat content was set at three levels, the thickener and the emulsifier contents at vivo levels. The dressings were analysed by a sensory panel, using both quantitative descriptive profiling and time-intensity (TI) evaluation, and by instrumental/rheological measurements. The two sensory methods were related to each other and the instrumental results were related to tire sensory results. All design parameters had a significant influence on the properties of salad dressing, mainly on texture and mouthfeel. Fat content was the most influencing parameter. Inter-action effects were found and it can he concluded that the content of the emulsifier was less critical when the fat and thickener contents increased Dynamic and descriptive sensory analyses,ere mainly related to each other in the fattiness attribute. There were strong relations between instrumental and sensory analysis according to rheological and texture attributes, /r/ greater than or equal to 0.7 (Pearson correlation coefficient)for most texture attributes.
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| 10. |
- Wendin, Karin, 1963-, et al.
(författare)
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Modelling and analysis of dynamic sensory data
- 2003
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Ingår i: Food Quality and Preference. - 0950-3293 .- 1873-6343. ; 14:8, s. 663-671
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Tidskriftsartikel (refereegranskat)abstract
- Time intensity (TI) data from earlier reported studies on cream cheese and salad dressing were used to develop models based on both polynomials and ordinary differential equations (ODE) that can be used to describe and interpret TI-data. Polynomials were thus fitted to experimental data. By taking the first and second derivatives of the polynomials one gets new polynomials that express how the perceived intensity changes with time. By integrating the original polynomial one gets a new polynomial that expresses how the classical TI-parameter "Area Under the Curve" is accumulated with time. Graphical display of all these types of polynomials gives an immediate and easily interpretable impression of the influence of different experimental factors on the time dependent perception. In the ODE models experimental factors, both formula and process conditions, were taken into account. Thus it was possible to develop equations that can be used for prediction of TI-curves for intermediate experimental settings.
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