CHANGES IN SOME ANTINUTRIENTS OF COWPEAS (VIGNA-UNGUICULATA) PROCESSED WITH KANWA ALKALINE SALT

被引:31
作者
UZOGARA, SG
MORTON, ID
DANIEL, JW
机构
[1] Department of Food and Nutritional Sciences, Food Science Division, King's College, London, London, W8 7AH, Kensington Campus, Campden Hill Road
关键词
antinutrients; cowpeas; kanwa processing;
D O I
10.1007/BF02193848
中图分类号
Q94 [植物学];
学科分类号
071001 ;
摘要
The effect on several anti-nutritional factors in cowpeas (Vigna unguiculata L. Walp) was investigated following treatment at 100°C or 121°C with solutions (0.1% w/v) of kanwa rock salt or NaHCO3 in distilled water. The concentration of polyphenols, calculated as tannic acid, was reduced substantially up to 67% under the alkaline conditions employed, but the reduction appeared to be greater (69-79%) at higher temperature. The loss of phytic acid was greater (27-40%) when beans were cooked in NaHCO3 than in kanwa (11-29%). The concentration of reducing sugars was decreased in all treatment groups especially under alkaline conditions. There was no evidence for the formation of lysinoalanine in any of the samples. © 1990 Kluwer Academic Publishers.
引用
收藏
页码:249 / 258
页数:10
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