摘要
采用废弃牛胎盘下脚料为氮源制备新型培养基。并采用Plackett-Burman法、最陡爬坡试验和响应面试验(Box-Behnken设计法)相结合的方法对大肠杆菌培养基进行优化。结果表明:牛胎盘下脚料经水解后,替代LB培养基中的酵母浸粉,显示出较高的生长水平。优化后的新型培养基(NTP)组成为:葡萄糖2.8 g/L,NaCl 11 g/L,胰蛋白胨10.3 g/L,牛胎盘水解物16.7 g/L,pH 7.85,最终得到活菌数量较高的培养基配方。
Bovine placenta scraps were used as a new nitrogen source for a new medium in this study.Plackett-Burman method,steep hills test and responses surface(Box-Behnken design) method were adopted to optimize the culture medium of the E.coli.Results showed that the E.coli had a higher growth level,after hydrolysis of bovine placenta scraps,which,thereafter,replaced yeast powder immersion in LB medium.The new optimized medium(NTP) was composed of glucose 2.8 g/L,NaCl 11 g/L,tryptone 10.3 g/L,bovine placenta hydrolysis content 16.7 g/L,pH 7.85.A medium formula with greater living bacterium content was achieved Eventually.
出处
《食品研究与开发》
CAS
北大核心
2011年第4期24-27,共4页
Food Research and Development
基金
河北科技大学生2010年度大学生科技创新基金项目(10253)
关键词
牛胎盘
培养基
响应面
优化
Bovine placenta
medium
responses surface methodology
optimization
作者简介
作者简介:沈棚(1987-),男(汉),在读本科生,研究方向:天然产物的分离研究。
通信作者:牟德华(1960-),男,教授,主要从事农产品深加工以及天然产物分离的研究。