Limited hydrolysis combined with controlled Maillard-induced glycation does not reduce immunoreactivity of soy protein for all sera tested

Jordan Walter, Yana Greenberg, Srirama Rao, B. Pam Ismail

Research output: Contribution to journalArticle

8 Scopus citations

Abstract

Combining proteolysis and Maillard-induced glycation was investigated to reduce the immunoreactivity of soy protein. Soy protein was hydrolyzed by Alcalase following response surface methodology utilizing three variables, temperature, time, and enzyme:substrate ratio, with the degree of hydrolysis (DH) and percent reduction in immunoreactivity as response variables. Western blots and ELISA were used to evaluate immunoreactivity using human sera. Data were fitted to appropriate models and prediction equations were generated to determine optimal hydrolysis conditions. The hydrolysate produced under optimized conditions was subjected to glycation with dextran. Hydrolysate produced under optimal conditions had 7.8% DH and a percent reduction in immunoreactivity ranging from 20% to 52%, depending on the sera used. Upon glycation, immunoreactivity was further reduced only when using serum that had the highest soy-specific IgE. This work revealed limitations and provided premises for future studies intended to prove the potency of the combined modification approach to produce a hypoallergenic protein ingredient.

Original languageEnglish (US)
Pages (from-to)742-752
Number of pages11
JournalFood Chemistry
Volume213
DOIs
StatePublished - Dec 15 2016

Keywords

  • Enzyme hydrolysis
  • Immunoreactivity
  • Maillard-induced glycation
  • Soy protein

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