知识与财富的链接
从茅台大曲中分离纯化得到1株毛霉,对该菌的液态培养基进行研究,结果表明,最适淀粉浓度为1.5%;最适初始pH值为9.0;最适生长温度为35℃。采用高粱和小麦基质分别对该菌进行纯种固态发酵,利用GC-MS对其代谢产物分析对比。结果表明,毛霉主要代谢产物为亚油酸乙酯和油酸乙酯,为茅台酒空杯香的主要成分。
A Mucor strain was isolated from Daqu of Maotai liquor and its optimum liquid culture conditions were summed up as follows: the optimum starch concentration was 1.5 %,the optimum initial pH value was 9.0,and the optimum growth temperature was at 35 ℃.Pure species solid fermentation of such strain was carried out with sorghum and wheat used as the substrate respectively and its metabolites were analysed by GC-MS.The results showed that the main metabolites of Mucor were 9,12-octadecadienoic ethyl ester and ethyl oleate,the main components in the scent remaining in empty glass of Maotai.
