广东海洋大学学报Issue(4)：87-92,6.
一株纳豆芽孢杆菌的饲料学特性研究
The feed Characteristics of a Strain of Bacillus natto
摘要
Abstract
Choosing a strain of Bacillus natto that has a strong resistance and good effect of feed fermentation and is used in animal feed additives is more and more important. The present study is conducted to detect the capacity of resistance to high temperature, acid bile and artificial gastric juice of a strain of Bacillus natto which are purchased from a biotechnological company. Meanwhile, the pH values, activity of amylase, protease and cellulase enzyme of feed fermented by this species are also observed at 7th to 15th days after fermentation began. The results showed that this strain of Bacillus natto has a strong tolerance to the environment of 100 , pH2 and artificial gastric juice.℃However, the resistant ability is poor to 0.1% to 0.5% bile salt environment. The pH value of feed that are fermented by the bacterial is decreased, but the amylase activity increased to 6% at 7th days and 20% at 15th day, the protease activity increased to 68% at 7th day and 3.7 fold at 15th day compared to control (P<0.05), the cellulase activity increased to 38% at 7th days , and around double fold at 15th days compared to control. Conclusion: This strain of Bacillus natto is an outstanding probiotics for feed additives.关键词
纳豆芽孢杆菌/微生态制剂/饲料学特性/酶活性Key words
Bacillus natto/probiotics/feed characteristics/enzyme activity分类
农业科技引用本文复制引用
巨向红,谢晓杭,张金燕,徐中文,雍艳红..一株纳豆芽孢杆菌的饲料学特性研究[J].广东海洋大学学报,2015,(4):87-92,6.基金项目
湛江市科技计划项目 （）
