基于自动电位滴定仪测定浓香型白酒糟醅酸度的应用研究  

Application of Automatic Potentiometric Titrator in the Determination of Acidity of Fermented Grains of Nongxiang Baijiu

作　　者：赵宏朋 林东[1,2] 熊峰 屈云 王蓉 吴华星[1,2] ZHAO Hongpeng;LIN Dong;XIONG Feng;QU Yun;WANG Rong;WU Huaxing(Sichuan Swellfun Co.Ltd.,Chengdu,Sichuan 610036;Key Laboratory of Baijiu Supervising Technology for State Market Regulation,Chengdu,Sichuan 610036,China)

机构地区：[1]四川水井坊股份有限公司,四川成都610036 [2]国家市场监管重点实验室(白酒监管技术),四川成都610036

出　　处：《酿酒科技》2025年第5期139-142,共4页Liquor-Making Science & Technology

摘　　要：酸度检测是白酒发酵过程中关键控制指标,传统人工滴定通量较小,为了提高浓香型白酒糟醅酸度检测效率,更好的指导生产实践,本研究针对浓香型白酒糟醅的酸度,通过样品前处理优化和采用全自动电位滴定仪对测量效率和精准度进行了应用研究。结果表明,最终样品批量预处理参数为加水振荡10 min、静置12 min,可以显著减少人工劳动强度;通过考察加标回收率、重现性及再现性,验证了高通量全自动电位滴定仪测定浓香白酒糟醅酸度的可行性;通过平行使用全自动电位滴定仪和手工滴定测定糟醅酸度,两种方式进行对比,其测定结果成线性关系,R^(2)=0.9962,且无显著性差异。基于自动电位滴定仪测定浓香型白酒糟醅酸度的应用,测定效率高达150个/人·d,显著高于人工60个/人·d,提高了检测效率,为中国白酒企业质量控制及智能化发展提供了参考依据。Acidity is the key control index in Baijiu fermentation.The traditional manual titration method is insufficient.In order to improve the detec-tion efficiency of acidity of the fermented grains of Nongxiang Baijiu,the measurement efficiency and accuracy were studied by optimizing the sam-ple pretreatment process and adopting the automatic potentiometric titrator.The optimized batch sample pretreatment parameters were adding water,vi-brating for 10 min,and then standing for 12 min,which could significantly reduce the manual labor intensity.By examining the recovery,repeatability and reproducibility,the feasibility of adopting the high-flux automatic potentiometric titrator in the determination of acidity of the fermented grains of Nongxiang Baijiu was verified.The acidity of the fermented grains was determined by the automatic potentiometric titrator and the manual titration method,and their results are linear(R^(2)=0.9962),with no significant difference.The determination efficiency of the automatic potentiometric titrator could reach 150 samples per person per day,significantly higher than the manual titration method(60 samples per person per day).This study has pro-vided reference for the quality control and intelligent development of Chinese Baijiu enterprises.

关 键 词：浓香型白酒 糟醅 酸度 全自动滴定仪 检测应用 

分 类 号：TS262.3[轻工技术与工程—发酵工程] TS261.7[轻工技术与工程—食品科学与工程]