不同菌株固态发酵废白酒糟生产饲料蛋白的研究

选择菌种24株，以白酒糟为原料进行了单菌发酵，多菌株组合发酵，以及不同氮源发酵试验。结果表明：以F-5，F-23，F-17和F-24组成的多菌发酵体系，经4d发酵后，发酵产物粗蛋白含量达30．86％，比原料本身的粗蛋白含量高65．3％；粗纤维含量由21．14％降低到17．65％；氨基酸总量由15．16％提高到22．88％，比原料本身高50．9％，且氨基酸含量齐全。试验表明，由F-5，F-17，F-23和F-24组成的多菌种发酵体系是发酵白酒糟生产饲料蛋白的优良菌种。

Study on the Solid-state Fermentation of Distillers'Grains to Produce Feeding-protein by Using Some Fungal Strains

The suitable 24 strains were obtained for producing feeding-protein from distillers' grains by conventional methods.On the basis of these strains,the experiments on the single-strain and the combination of multiple-strains were conducted on and the optimal strains combination F-5,F-17,F-23 and F-24 was acquired subsequently.The fermenter results of 4d with this combination showed that the content of crude protein was increased from 18.07% to 30.86%,65.3% higher than the content of distillers' grains.The content of crude cellulose reduced from 21.14% to 17.65%.The content of total amino acids was increased from 15.16% to 22.88%,50.9%higher than that of distillers' grains.And the fermented products contained all kinds of amino acids.The experimental results showed the combination of F-5,F-17,F-23and F-24 strains was suitable for fermentation of distillers' grains to produce feeding-protein.