不同培养温度对大曲微生物种群变化影响的研究

Effects of Different Culture Temperature on Microbial Population Change in Daqu

以不同顶温培养下的中温曲和中高温曲为样品,对其培养温度、感官理化指标以及培养和贮存微生物进行了分析。结果表明:中高温曲挺火长,曲香好,但糖化力和发酵力低;培养过程中高温曲细菌数量多于中温曲,但酵母菌和霉菌低于中温曲,贮存过程中变化趋势相近。

The moderate-temperature daqu and moderate-high-temperature daqu in different top temperature culture were used as samples,as well as culture temperature,sensory and physiochemical index,microbe in culture and storage stage were analyzed.The results indicated that moderate-high-temperature daqu last for a long time,stronger aroma, but saccharifying power and fermenting power was low.Bacterial of moderate-high-temperature daqu was higher than that of moderate-temperature daqu in culture period,while less than moderate temperature in mold and yeast.The change tendency was similar in storage stage.