Journal
INTERNATIONAL JOURNAL OF FOOD SCIENCE AND TECHNOLOGY
Volume 40, Issue 7, Pages 695-700Publisher
WILEY
DOI: 10.1111/j.1365-2621.2005.00978.x
Keywords
black grams; chick peas; kidney beans; lentils; phytic acid; tannins
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The effects of hydrothermal processing on antinutrients and the protein and starch digestibility of black grams, chick peas, lentils and red and white kidney beans was investigated. The tannins and phytic acid contents in these five food legumes ranged from 770 to 1100 and 970 to 1440 mg/100 g, respectively, whereas protein and starch digestibility of the raw food legumes was found to be from 33.8 to 37.6 and 36.8 to 42.0%, respectively. A reduction in the level of these antinutrients, along with an improvement in protein and starch digestibility, was observed after cooking. The tannins and phytic acid contents were reduced by 33.1-45.7 and 28.0-51.6%, respectively, because of the use of different hydrothermal treatments at 100, 121 and 128 degrees C. Maximum improvement in protein digestibility (95.7-105.1%) and starch digestibility (116.7-137.7%) was observed on cooking at 121 degrees C for 10 min. However, cooking in boiling water resulted in improvement in protein and starch digestibility of the food legumes by 86.9-93.3 and 84.0-90.4%, respectively.
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