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Original Articles

A Pepsin-Resistant 20 kDa Protein Found in Red Kidney Bean (Phaseolus vulgaris L.) Identified as Basic Subunit of Legumin

Pages 3058-3061 | Received 10 Jul 2006, Accepted 01 Sep 2006, Published online: 22 May 2014
 

Abstract

The digestibility of proteins in red kidney bean (Phaseolus vulgaris L.) was examined by in vitro pepsin assay. A 20-kDa polypeptide that remained highly stable after heat processing was identified as a basic subunit of legumin. The results of a monobromobimane (mBBr) labeling test implied that this protein contained rigid intramolecular disulfide bonds, which might contribute to pepsin resistance.

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