Effect of storage on faba beans proteins

The purpose of this work was to characterize some physico-chemical properties of proteins in raw and stored Tibo faba beans. The storage caused that the faba bean proteins were partialy degraded and hydrolyscd, which resulted in a decreased content of albumins, globulins, and amino acids in stored seeds. The nutritional value of proteins decreased due to lass of essencial amino acids and lower susceptibility of the proteins to proteolytic enzymes. Opposite to globulins, trypsin released more non-protein nitrogen from albumins than pepsin. The yield of extraction of albumins and globulins decreased upon storage and some modification in the protein conformations, most probably due to aggregation, dissociation and glycation, could have been hypothesized.