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发酵白酒糟生产饲料蛋白的优良菌种的筛选
THE SCREENING OF THE STRAINS OF DISTILLER’S GRAINS TO PRODUCE FEEDING-PROTEINS
【摘要】 采用常规方法从1000多株菌(包括丝状真菌、酵母菌、链霉菌、细菌)中筛选到一批优良菌种,并进行了单菌发酵、多菌株组合发酵,不同原料配方发酵试验。在实验室条件下,发酵产物的粗蛋白含量高达35.9%,比原料本身的粗蛋白含量高50%以上,比所用培养基的粗蛋白含量高30%,发酵产物的粗纤维含量降低率为15%;粗脂肪含量为5.5%左右;产率达80%以上。结果证明,筛选到的菌株确是发酵白酒糟生产饲料蛋白的优良菌种。
【Abstract】 A number of strains producing feeding-proteins from distiller’s grains were obtained from more than 1000 strains (include fungi, yeasts, streptomycetes and bacteria) using conventional screening methods. The experiment for single strain fermentation, various strains combination, different media composition were carried out. Under the condition of the laboratory, the content of raw protein of fermentative product reached 35.9%, it was 50% and 30% higher than the distiller’s grains and the medium used respectively. 15% of the content of raw cellulose was reduced. The content of raw fat was about 5.5%. The productive rate was up to 80%. The results showed that the strains obtained are good ones to produce feeding-proteins from fermentation of distiller’s grains.
【Key words】 Feeding-protein; Distiller’s grains; Fermentation; Screening;
- 【文献出处】 微生物学报 ,Acta Microbiologica Sinica , 编辑部邮箱 ,1997年02期
- 【分类号】Q939.9
- 【被引频次】29
- 【下载频次】404