Production of Feng-flavor baijiu includes six stages(first fermented stage,second fermented stage,third fermented stage,normal fermented stage and quitting fermented stage,ending of fermented stage).Each stage of the ...Production of Feng-flavor baijiu includes six stages(first fermented stage,second fermented stage,third fermented stage,normal fermented stage and quitting fermented stage,ending of fermented stage).Each stage of the base liquor has its own style.The main chromatogram structure components were analyzed by gas chromatography(GC),to explore the characteristics of base baijiu during different production stages,which can provide a reference for classification storage and body design of baijiu.展开更多
采用顶空固相微萃取-气质联用(HS-SPME-GC-MS)技术,对传统凤型大曲中的挥发性风味物质进行检测。结果显示,从大曲入房开始的整个制曲过程中,均检测到土味素的存在,土味素含量随大曲培养时间的延长随之增加,以投产大曲中土味素含量最高,...采用顶空固相微萃取-气质联用(HS-SPME-GC-MS)技术,对传统凤型大曲中的挥发性风味物质进行检测。结果显示,从大曲入房开始的整个制曲过程中,均检测到土味素的存在,土味素含量随大曲培养时间的延长随之增加,以投产大曲中土味素含量最高,达到5?g/Kg曲。对不同培养时期大曲中的微生物分离培养,得到三株产土味素的菌株F5A-1、F4B-3和F5B-3,通过16S r DNA序列分析,鉴定三株均为白色链霉菌(Streptomycesalbus)。该菌株代谢产生土味素,为大曲中土霉气味的产生源头。展开更多
文摘Production of Feng-flavor baijiu includes six stages(first fermented stage,second fermented stage,third fermented stage,normal fermented stage and quitting fermented stage,ending of fermented stage).Each stage of the base liquor has its own style.The main chromatogram structure components were analyzed by gas chromatography(GC),to explore the characteristics of base baijiu during different production stages,which can provide a reference for classification storage and body design of baijiu.
文摘采用顶空固相微萃取-气质联用(HS-SPME-GC-MS)技术,对传统凤型大曲中的挥发性风味物质进行检测。结果显示,从大曲入房开始的整个制曲过程中,均检测到土味素的存在,土味素含量随大曲培养时间的延长随之增加,以投产大曲中土味素含量最高,达到5?g/Kg曲。对不同培养时期大曲中的微生物分离培养,得到三株产土味素的菌株F5A-1、F4B-3和F5B-3,通过16S r DNA序列分析,鉴定三株均为白色链霉菌(Streptomycesalbus)。该菌株代谢产生土味素,为大曲中土霉气味的产生源头。