利用酒糟生产饲料蛋白的菌种选育  

Breeding of Bacteria Functioning to Produce Feed Proteins by the Use of Distillers Grains *

作　　者：侯文华[1,2,3] 李政一[1,2,3] 杨力[1,2,3] 周定 

机构地区：[1]中国环境科学研究院 [2]北京轻工业学院 [3]哈尔滨工业大学

出　　处：《环境科学》1999年第1期77-79,共3页Environmental Science

基　　金：国家"八五"科技攻关项目

摘　　要：为了提高酒糟蛋白质的含量和粗纤维的降解，本研究选择菌种３０株，以白酒糟为原料筛选出优质饲料蛋白菌株８５０２，８５０３和８５０５三株．用微生物液体发酵法，经研究发现，以８５０３和８５０５组成的多菌发酵体系，使酒糟初始蛋白含量由２３．０％，经５ｄ发酵后，提高到３７．５％，比初始酒糟蛋白质含量提高了１４．５％，粗纤维含量由初始的１６．３％降为１４．１％，比初始酒糟含量降低２．２％．在一定的试验条件下，单菌发酵酒糟提高其粗蛋白含量最高达到３０．２％，比初始酒糟蛋白质含量提高了７．０％．而多菌种协同发酵酒糟，其蛋白质含量却提高到３７．５％，高出单菌种发酵酒糟７．３％，提高了近１倍．试验证明，由８５０３和８５０５组成的多菌种发酵体系转化酒糟提高蛋白质的含量明显优于单一菌种．High quality bacteria 8502, 8503 and 8505 were selectively bred. The study shows that the efficiencies to turn the distillers' grains into feed with rich protein by multiple bacteria synergistic fermentation are higher than those by single bacteria fermetation. Under definite experimental conditions, the efficiencies of multiple bacteria synergistic fermentation system are 7.3% higher than those of single bacteria fermentation system from 30.2% up to 37.5%, and the content of fiber is almost at the same level, about 2%.The distillers' grains have undergone fermentation for 5 days in the multiple bacteria synergistic fermentation system composed by 8503 and 8505. The protein raises from 23.0% of original wastes of distillers' grains up to 37 5%, 14 5% higher than that in original wasters, and the content of fiber is 2.2% less than original wastes, from 16.3% down to 14.1%.

关 键 词：酒糟 废料再利用 菌种选育 蛋白 

分 类 号：S816.46[农业科学—饲料科学] TS261.9[农业科学—畜牧学]