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Effect of
domestic processing, cooking and germination on the trypsin inhibitor activity
and tannin content of faba bean (Vicia faba).
Plant Foods Hum Nutr 1992 Apr;42(2):127-33
Sharma A, Sehgal S.
Department of Foods and Nutrition, Haryana Agricultural University, Hisar,
India.
The effects of domestic processing methods like soaking for 12 h, dehulling,
ordinary cooking of whole as well as dehulled seeds at 15 lbs/inch2 pressure for
15 and 25 min, and germination for 24, 36 and 48 h were observed on trypsin
inhibitor (TIA) and tannin content of two varieties of faba bean viz. VH-131 and
WF. A non-significant reduction in TIA was observed on soaking and dehulling,
while tannins showed a reduction of 42 and 51% on soaking in VH 131 and WF,
respectively. Dehulled seeds showed a decline in tannin content by 70 to 73% in
two varieties. There was a significant reduction in TIA (75-76 per cent) and
tannin (76-81%) on cooking, while autoclaving for 25 min almost completely
eliminated both of these stress factors. Germination of seeds for 48 h led to a
reduction of 64-65% in TIA and 90-91% in tannins, which was more than
germination for 24 and 36 h. Soaked seeds gave positive results of both these
antinutrients.
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