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- Andersson, Annica, et al.
(author)
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Relationship of grain fructan content to degree of polymerisation in different barleys
- 2014
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In: Food and Nutrition Sciences. - : Scientific Research Publishing, Inc.. - 2157-944X .- 2157-9458. ; 5, s. 581-589
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Journal article (peer-reviewed)abstract
- Fructans are important in the survival of plants and also valuable for humans as potentially health promoting food ingredients. In this study fructan content and composition were determined in grains of 20 barley breeding lines and cultivars with a wide variation in chemical composition, morphology and country of origin, grown at one site in Chile. There was significant genotypic variation in grain fructan content ranging from 0.9% to 4.2% of grain dry weight. Fructan degree of polymerisation (DP) was analysed using high-performance anion-exchange chromatography with pulsed amperometric detection (HPAEC-PAD). Changes in the distribution of different chain lengths and the pattern of structures of fructan were detected with increasing amount of fructan in the different barleys. A positive correlation was found between fructan content and the relative amount of long chain fructan (DP > 9) (r = 0.54, p = 0.021). Our results provide a basis for selecting promising barley lines and cultivars for further research on fructan in barley breeding with the aim to produce healthy food products.
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| 3. |
- Andersson, Annica, et al.
(author)
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Rye dietary fibre
- 2014
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In: Rye and health. - 9781891127816 ; , s. 23-47
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Book chapter (peer-reviewed)
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| 6. |
- Andersson, Annica, 1963-, et al.
(author)
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Agency in mathematics education
- 2011
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In: Proceedings, the 7th Congress of the European Society for Research in Mathematics Education, CERME – 7. ; , s. 1389-1398
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Conference paper (peer-reviewed)abstract
- In this paper we elaborate on the notion of agency. We relate agency to Skovsmose‘s and Biesta‘s frameworks respectively. Both Skovsmose and Biesta are concerned with citizenship education, mathematics education and the purpose of education from a critical position. We explore if and how Skovsmose‘s and Biesta ́s frameworks respectively relate to agency
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| 7. |
- Andersson, Annica, et al.
(author)
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Alkylresorcinols in wheat and rye flour and bread
- 2010
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In: Journal of Food Composition and Analysis. - : Elsevier BV. - 0889-1575 .- 1096-0481. ; 23, s. 794-801
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Journal article (peer-reviewed)abstract
- The alkylresorcinol (AR) content and relative homologue composition were determined in Norwegian flours and bread. The following average values for total AR content (mu g/g dm) were found: wholegrain wheat flour available only to bakers (490) and to both consumers and bakers (710), refined wheat flour (36), wheat bran (3625), wholegrain spelt wheat flour (650), refined spelt wheat flour (80), wholegrain rye flour (972), refined rye flour (90) and rye bran (2753). The C17:0/C21:0 ratio was 0.1 for wheat and 0.8-0.9 for rye, confirming that it can be used to distinguish between wheat and rye. The AR content of Norwegian refined wheat flour was higher than that of Swedish, due to a consistently higher milling extraction rate in Norway. The content of AR varied from 27 to 2766 mu g/g dm in hard bread and 21 to 548 mu g/g dm in soft bread. The highest contents were found in bread with a high proportion of wholegrain flour and/or bran, in agreement with earlier studies. There was a good correlation (r = 0.91) and a high compliance between calculated and analysed AR levels in soft bread, confirming that AR can be used as a biomarker for wholegrain wheat and/or rye content in a cereal product. (C) 2010 Elsevier Inc. All rights reserved.
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| 8. |
- Andersson, Annica, et al.
(author)
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Down-Regulation of the CSLF6 Gene Results in Decreased (1,3;1,4)-beta-D-Glucan in Endosperm of Wheat
- 2010
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In: Plant Physiology. - : Oxford University Press (OUP). - 0032-0889 .- 1532-2548. ; 152, s. 1209-1218
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Journal article (peer-reviewed)abstract
- (1,3; 1,4)-beta-D-Glucan (beta-glucan) accounts for 20% of the total cell walls in the starchy endosperm of wheat (Triticum aestivum) and is an important source of dietary fiber for human nutrition with potential health benefits. Bioinformatic and array analyses of gene expression profiles in developing caryopses identified the CELLULOSE SYNTHASE-LIKE F6 (CSLF6) gene as encoding a putative beta-glucan synthase. RNA interference constructs were therefore designed to down-regulate CSLF6 gene expression and expressed in transgenic wheat under the control of a starchy endosperm-specific HMW subunit gene promoter. Analysis of wholemeal flours using an enzyme-based kit and by high-performance anion-exchange chromatography after digestion with lichenase showed decreases in total beta-glucan of between 30% and 52% and between 36% and 53%, respectively, in five transgenic lines compared to three control lines. The content of water-extractable beta-glucan was also reduced by about 50% in the transgenic lines, and the M-r distribution of the fraction was decreased from an average of 79 to 85 X 10(4) g/mol in the controls and 36 to 57 x 10(4) g/mol in the transgenics. Immunolocalization of beta-glucan in semithin sections of mature and developing grains confirmed that the impact of the transgene was confined to the starchy endosperm with little or no effect on the aleurone or outer layers of the grain. The results confirm that the CSLF6 gene of wheat encodes a b-glucan synthase and indicate that transgenic manipulation can be used to enhance the health benefits of wheat products.
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