啤酒酵母融合株QSB-Ⅺ_6中试研究

Pilot Fermentation Test of Beer Yeast Fusant QSB-6

将新选育的酵母融合株ＳａｃｈａｒｏｍｙｃｅｓｃｅｒｅｖｉｓｉａｅＱＳＢ－Ⅺ６，同本厂生产中使用的酵母菌种ＳａｃｈａｒｏｍｙｃｅｓｃｅｒｅｖｉｓｉａｅＬＱ１６在２３０Ｌ发酵罐中做对比性发酵试验。试验酒的各项理化指标均已达到国家优质酒标准，其中双乙酰值在００８ｍｇ／ｌ以下，真正发酵度平均为７０２０％，酒体泡沫丰富，清亮透明。口味纯正，风味独特，为使该菌种能更好地应用于生产，奠定了基础。

The comparative fermentation tests between Saccharomyces cerevisiae QSB-6 selected by the protoplast fusion and S.cerevisiae LQ16(one parent) being used as production strain in Qiqihar Brewery were conducted in the fermentation tank (230L).Each quality index of the test beer produced by QSB-6 came up to the national standards of high-quality beer.Among these indees,the average content of diacetyl was below 0.08mg/L and the average value of true fermentation power over 70.20%,The test beer was full of foam,and Limpid and transparent.The beer tasted pure and refreshing and the flavour of it was distinctive.The results of the tests laid a foundation for the application of the fusant in the beer production.