中国畜牧兽医2017，Vol.44Issue(3)：651-658,8.DOI:10.16431/j.cnki.1671-7236.2017.03.005
获得最大酵母多糖提取率的破壁方法研究
The Study of Cell Wall Breaking Methods to Obtain Maximum Extraction Rate of Yeast Polysaccharides
摘要
Abstract
The aim of this study was to determine the optimal method of the yeast cell wall breaking which could obtain the maximum extraction rate of yeast polysaccharide.The extraction rate of yeast polysaccharide and the cell wall broken rate were used as the evaluating indexes.The conditions of ultrasonic disruption, repeated freezing and thawing, ultrasonic cleaning and protease treatment were optimized to select the appropriate parameters in cell wall breaking.The effects of these 4 methods and the synergistic action of ultrasonic disruption and protease treatment were compared.The results showed that when the ultrasonic cleaning time was 40 min and ultrasonic disruption time was 50 min, the water content of slurry was 15% and the times of freezing and thawing was 3, and the protease treatment was carried out at 40 ℃ for 15 h with enzyme concentration 300 IU/g and pH 5.0, respectively, the extraction rates of yeast polysaccharides were the highest.The effect of protease treatment was the best among these 4 cell wall breaking methods, its extraction rate of polysaccharide was 149.81 mg/g and the cell wall broken rate was 53.49%.The effect of combined way was better than that of single treatment, but the synergistic action would destroy the integrity of polysaccharide's structure.So the protease treatment was thought an ideal cell wall breaking method of yeast.关键词
酵母菌/破壁方法/多糖提取率/破壁率Key words
yeast/cell wall breaking methods/polysaccharide extraction rate/cell wall broken rate分类
农业科技引用本文复制引用
李晶晶,冀国珍,高爱武,曹平,杨金丽,王海荣..获得最大酵母多糖提取率的破壁方法研究[J].中国畜牧兽医,2017,44(3):651-658,8.基金项目
自治区科技创新引导奖励资金项目(20140608) （20140608）
反刍动物新型复合微生态制剂的创制与应用 （）
