桑黄多糖脱蛋白方法与条件的优化

[目的]对桑黄多糖提取液中的蛋白质去除方法和条件进行了优化,并比较了2种方法对蛋白质去除的影响。[方法]采用Sevag法与三氯乙酸（TCA）法去除桑黄多糖中的游离蛋白质。[结果]三氯乙酸法去除蛋白质的效果优于Sevag法,其最佳脱蛋白条件为：5%三氯乙酸用量,处理3次,反应时间30min,。在此条件下,蛋白质去除率为82%,多糖损失率为10.8%。[结论]TCA法为最佳的桑黄多糖脱蛋白方法。

Optimization of Protein Removal Method and Condition of Polysaccharide from Phellinus Linteus

[Objective] The research aimed at optimizing protein removal method and condition of polysaccharide extracts from Phellinus Linteus and comparing the effects of two methods on protein removal.[Method] Free proteins in polysaccharide from Phellinus Linteus were removed using Sevag method and TCA method.[Result] The TCA method was better than Sevag method,and the optimum protein removal condition was treated with 5% TCA for 30 min and for three times,under that condition,the protein removal rate attained 82% while the polysaccharide loss rate was only 10.8%.[Conclusion] The TCA method was a better way to remove proteins of polysaccharide from Phellinus Linteus.