Evans, A.J. and Cheung, , P.C.K. and Cheetham, N.W.H. (1993) The carbohydrate composition of cotyledons and hulls of cultivars of Lupinus angustifolius from Western Australia. Journal of the Science of Food and Agriculture, 61 (2). pp. 189-194.
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Abstract
The hulls and cotyledons from 3 Western Australian cultivars (Gungurru, Yorrel and Danja) of L. angustifolius, all of low alkaloid content, were analysed separately for their carbohydrate content and composition. Only minor differences in composition between these 3 cultivars were observed. More notably, the cotyledons of all the cultivars contained levels of non-starch polysaccharides (NSP), ranging from 290 to 310 g/kg DW, considerably higher than had been measured previously in cultivars of this species. Galactose, arabinose and uronic acid residues accounted for about 67, 13 and 10%, respectively, of the cotyledon NSP. Although only a small proportion of the cotyledon NSP is soluble, a much larger proportion could be extracted with hot EDTA treatment. The oligosaccharide content of the cotyledons ranged from 74 to 80 g/kg DW. Cotyledons had very low contents of cellulose, lignin and starch. Hulls consisted predominantly of NSP, with values ranging from 856 to 891 g/kg DW. Glucose, xylose, uronic acids and arabinose were the principal sugar residues present reflecting the compositions of the major constituent polysaccharides, cellulose, hemicelluloses and pectins. Only low levels of lignin were measured in hulls. It was concluded that cotyledon NSP and hulls from these cultivars may have considerable value as sources of dietary fibre in the human diet.
| Item Type: | Article |
|---|---|
| Additional Information: | This work was supported by the Grain Legumes Research Council of Australia. |
| Uncontrolled Keywords: | lupin, cotyledon, hull, carbohydrate, composition, polysaccharide, oligosaccharide, dietary fibre |
| Author Affiliation: | CSIRO Division of Food Science and Technology,Australia. |
| Subjects: | Crop Improvement Plant Physiology and Biochemistry > Biochemistry |
| Divisions: | General |
| Depositing User: | Mr Arbind Seth |
| Date Deposited: | 29 Nov 2012 11:32 |
| Last Modified: | 29 Nov 2012 11:32 |
| Official URL: | http://dx.doi.org/10.1002/jsfa.2740610209 |
| URI: | http://eprints.icrisat.ac.in/id/eprint/8939 |
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