Abstract
Some conventional processing methods were applied on yambean and soybean seeds and flour samples. They include soaking fermentation, cooking whole seeds in the presence and absence of trona, autoclaving and dry heat treatment of flour samples. Hemagglutinating activity was assayed for after processing treatments. The hemagglutinating proteins from these seeds were classified based on their solubility properties. Effects of the presence of 0.01% concentration of trypsin, pepsin and proteases on agglutination of human red blood cells were also evaluated. Most processing methods, particularly cooking whole seeds for 1-2 h, soaking and fermentation, reduced hemagglutinating activity on cow red blood cells. Size reduction accompanied by heat treatment was effective in eliminating hemagglutination. Both the albumin and globulin fractions of the soybean showed hemagglutinating activity but only the albumin fraction of the yambean had agglutinating properties. Proteolytic action of proteases was more effective in reduction of hemagglutinating activity than that of trypsin and pepsin.
Published Version
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