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Two recent studies from Spanish and American scientists indicate that fermenting soy beans could lead to the removal of the proteins responsible for causing soy allergies. The results of these studies suggest that the production of hypoallergenic soy products may be possible by fermenting soy with a number of microorganisms, including bacteria and yeast.
In reports published in the Journal of Agricultural and Food Chemistry and Food Chemistry, the researchers state that L. plantarum-fermented soy flour showed the highest reduction in immunoreactivity, ranging from 96 to 99 per cent, depending upon the sensitivity of the human plasma, obtained from the World Health Organization (WHO).
The researchers noted the essential amino acid profile of the soy products was altered as a result of fermentation. Further evaluation of the new bioactive peptides formed in the process may show they have other benefits.
The studies were funded by the USDA Future Foods Initiative and the Illinois Soybean Association.
References:
Song et al. 2008 "Immunoreactivity reduction of soybean meal by fermentation, effect on amino acid composition and antigenicity of commercial soy products" Food Chemistry. Vol108 (2), Pages 571-581
Frias et al. 2008 "Immunoreactivity and Amino Acid Content of Fermented Soybean Products" Journal of Agricultural and Food Chemistry. Vol 56 (1), Pages 99-105. |