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Food Chem. 2013 Apr 15;137(1-4):83-91. doi: 10.1016/j.foodchem.2012.10.007. Epub 2012 Oct 22.

Identification of high β-glucan oat lines and localization and chemical characterization of their seed kernel β-glucans.

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1
Department of Biology and Environmental Sciences, University of Gothenburg, Box 461, SE-40530 Gothenburg, Sweden. per.sikora@gu.se

Abstract

Oat, (Avena sativa) is an excellent source of mixed linkage β-glucans ((1→3)(1→4)-β-D-glucan), a dietary fibre with cholesterol lowering properties. Using a mutagenized oat-population we screened 1700 different lines and identified ten lines that displayed β-glucan levels above 6.7% and 10 below 3.6%.The extreme values were 1.8% and 7.5%. We chose six lines with an increased- and four lines with a reduced β-glucan content for further study. By longitudinal- and cross-sections of seeds it was shown that localization of β-glucan varied between the different lines. In addition, β-glucan quality parameters like molecular weight and solubility were also determined. Although the selection was designed for quantitative differences, qualitative differences between the β-glucans from the different lines were found. The high and low β-glucan lines will now be used as a model system to study molecular regulation of β-glucan biosynthesis as well as possible links between fibre quality and biological activity.

PMID:
23199994
DOI:
10.1016/j.foodchem.2012.10.007
[Indexed for MEDLINE]
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