富硒花生中硒的赋存形态研究

摘要

In this study,the distribution of organically bound forms of selenium in Se-rich peanuts was analyzed by determining the amounts of total,protein-bound,polysaccharide-bound and fat-bound selenium.Protein-bound selenium was the most predominant bound form in Se-rich peanuts,accounting for 69.29% of the total selenium amount,and alkali-soluble protein was the most prominent form among five types of soluble proteins,representing 45.19% of the total selenium amount.Polysaccharide Viscosity Analysis of Pectin from Jincheng Orange Pomace under Different Conditions ranked second among three organically bound forms,with a content of 11.76% relative to the total selenium amount.Fat-bound selenium accounted for only 8.61%.%采用不同的提取液分别提取花生中的蛋白质、多糖和脂肪,测定各组分中的含硒量,研究富硒花生籽粒中硒的赋存形态。结果表明：富硒花生籽粒中的硒以蛋白质结合态硒含量最高,占总硒的69.29%,其中碱溶性蛋白态硒含量最高,占硒总量的45.19%。其次是多糖态结合硒,占总硒的11.76%,其中酸溶性多糖态硒含量最高。脂肪结合态硒只占总硒的8.61%。