纯种酒曲强化剂在小曲酒酿造中的应用

Application of Pure-breed Fermented Koji Fortifier in Xiaoqu Wine Brewing

研究以川法小曲酒的酿造工艺为基础,将制成的纯种酒曲强化剂应用于小曲酒的酿造中,对小曲酒发酵过程进行动态跟踪检测,同时对酿造出的小曲酒进行理化检测和风味成分分析,并进一步研究不同市售小曲的适用性。结果表明:两组试验在温度、水分、酸度、还原糖含量、淀粉含量的变化规律基本一致,但试验组各项指标均优于空白组。对酒醅和酒样进行GC-MS分析,试验组的挥发性成分种类和含量均高于空白组,以酯类、芳香类物质最为突出,乙酸乙酯的含量为1125.804 mg/L,提高了64.41%,所得酒样总酸为0.536 g/L、总酯为1.373 g/L。将不同市售小曲进行固态发酵,6组试验出酒率都在40%以上,试验组的酒精度均高于空白组,结合酒醅数据可知,强化剂的添加有利于糖化产酒。强化剂的应用可在一定程度上提高小曲酒的糖化出酒,3组试验出酒率分别提高了4.95%、4.59%、2.85%,同时对酒体总酸、总酯也有一定程度的影响,在不同小曲中均有一定的作用,具有广泛的适用性。

In this study,based on the brewing process of Sichuan Xiaoqu wine,the purebred fermented koji fortifier was applied to the brewing process of Xiaoqu wine to dynamically track and detect the fermentation process of Xiaoqu wine.Meanwhile,the physicochemical test and flavor component analysis of the brewed Xiaoqu wine were carried out to further study the applicability of Xiaoqu wine sold in different markets.The results showed that the changes of temperature,moisture,acidity,reducing sugar content and starch content in the two groups were basically the same,but each index of the test group was better than that of the blank group.GC-MS analysis of fermented grains and wine samples showed that the types and contents of volatile components in experimental group were higher than those in blank group,especially ester and aromatic compounds.The content of ethyl acetate was 1125.804mg/L,which increased by 64.41%.The total acid and total ester in fermented grains were 0.536g/L and 1.373g/L,respectively.After solid state fermentation of different market dainties,the alcohol yield of the six groups was all over 40%,and the alcohol content of the experimental group was all higher than that of the blank group.In combination with the fermented grains data,it could be seen that the addition of fortifier was beneficial to the saccharization of wine production.The application of fortifier can improve the saccharification yield of Xiaoqu liquor to a certain extent,and the yield rate of the three groups increased by 4.95%,4.59% and 2.85%,respectively.At the same time,it also has a certain effect on the total acid and total ester of the liquor,and has a certain effect on different daiqu liquor,and has a wide applicability.