酿酒酵母麦芽汁糖代谢与啤酒发酵度研究

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	酿酒酵母麦芽汁糖代谢与啤酒发酵度研究
	王士安; 胡南; 张坤迪; 李福利
	2010
发表期刊	酿酒科技
卷号	1 期号:10 页码:44-47
摘要	葡萄糖、果糖、蔗糖、麦芽糖和麦芽三糖是麦芽汁中的主要可发酵糖分。测试31株果实来源酿酒酵母菌株和工业菌株对这些糖分的代谢能力，分析其对啤酒发酵度的影响。试验结果表明，所有供试菌株都能快速代谢葡萄糖、果糖和蔗糖，都不能代谢麦芽三糖，而菌株同化和发酵麦芽糖的能力存在明显差异，差异系数分别为 39.4 %和33.9 %；菌株的麦芽糖同化和发酵能力与真正发酵度存在强相关性，相关系数分别为 0.84 和 0.80；果实来源菌株的总体麦芽糖同化、发酵能力及真正发酵度显著低于工业菌株（P＜0.01）。选用工业菌种过程进行麦芽糖代谢鉴定是快速筛选高发酵度菌株的有效途径。
其他摘要	Glucose, fructose, sucrose, maltose, and maltotriose are the main fermentable carbohydrate in wort. In this study, wort glycometabolism by 31 Saccharomyces cerevisiae strains including fruit strains and industrial strains was observed and their effects on beer fermentation degree were investigated. The results were as follows: 1. Fast metabolism of glucose, fructose and sucrose could be achieved by all tested strains, however, the metabolism of maltotriose could be achieved by none of them, and there was significant difference in maltose assimilation and in maltose fermentation for different S.cerevisiae strains, coefficients of variation were as 39.4 % and 33.9 % respectively;2.There was strong correlations between maltose-assimilating and maltose-fermenting capability of S.cerevisiae strains and real degree of fermentation (RDF) of beer,the correlation coefficients were 0.84 and 0.80 respectively; 3. The maltose-assimilating and maltose-fermenting capability of fruit S.cerevisiae strains was evidently weaker than that of industrial S.cerevisiae strains, besides, RDF was also lower for fruit S.cerevisiae strains (P<0.01) . The study suggested that maltose metabolism identification was an effective approach for rapid selection of proper industrial S.cerevisiae strains with high beer fermentation degree
关键词	酿酒酵母低糖啤酒发酵度麦芽糖麦芽三糖
学科领域	微生物资源
语种	中文
文献类型	期刊论文
条目标识符	http://ir.qibebt.ac.cn/handle/337004/718
专题	分子微生物工程研究组
推荐引用方式 GB/T 7714	王士安,胡南,张坤迪,等. 酿酒酵母麦芽汁糖代谢与啤酒发酵度研究[J]. 酿酒科技,2010,1(10):44-47.
APA	王士安,胡南,张坤迪,&李福利.(2010).酿酒酵母麦芽汁糖代谢与啤酒发酵度研究.酿酒科技,1(10),44-47.
MLA	王士安,et al."酿酒酵母麦芽汁糖代谢与啤酒发酵度研究".酿酒科技 1.10(2010):44-47.

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