STUDIES ON THERMAL INACTIVATION OF EXTRACTED POLYPHENOL FROM DDGS

Abstract

Distillers Dried Grain with soluble (DDGS) is the solid waste of rice based alcohol other industries. It is a nutritionally important source of protein (40%), fat (6%), fiber (7%), minerals (4.5%) and polyphenols (167mg/100g GAE). Again it is nontoxic and does not contains allergen hence may be used as raw material for food product development and extraction of functional component. During extraction, the phenolic compound may be inactivated during thermal processing. The thermal inactivation kinetics of polyphenol was studied and reported in this paper. Inactivation rate constant and activation energy were calculated. The experimental results were compared with different model equations. Different kinetic data available from this study may be used for prediction of polyphenol inactivation pattern in real food matrix.