阿魏酸在大豆分离蛋白制备可食性膜中的应用

Abstract

在大豆分离蛋白成膜液中添加0.5mmol/100ml的阿魏酸能增加膜的机械强度,降低膜对水蒸气、氧气、二氧化碳和氮气的透性,同时,采用阿魏酸处理较易制备大豆分离蛋白与花生油或玉米淀粉组成的复合膜。阿魏酸能改善大豆分离蛋白成膜特性的可能机理是因为它增加了蛋白分子之间的交联。 The experimental results showed that addition of 0.5mmol/100ml ferulic acid into film forming solutions of soy protein isolate (SPI)increased mechanical strength and decreased permeability of water vapor,oxygen,carbon dioxide and nitrogen.And also,ferulic acid made it easy to form edible films by combination of SPI and peanut oil or SPI and corn starch,which were defficult to form intact film without addition of ferulic acid.The possible role of ferulic acid in improving film forming condition and film quality is that it increased crosslinking between amino acids in and between protein molecules.This primary investigation on role of ferulic acid in preparation of protein film proved that ferulic acid is a safe and perspective crosslinking agent for soy protein. 还原