紫外法、气相法、二氧化碳法检测大曲发酵力的方法对比  

Comparison of UV, Gas Phase, and Carbon Dioxide Methods for Detecting the Fermentation Power of Daqu

作　　者：李小杰 吕志远 张梦梦 刘玉涛 缪坤辰 崔新莹 胥鑫钰 王文洁 LI Xiaojie;LV Zhiyuan;ZHANG Mengmeng;XIU Yutao;MIAO Kunchen;CUI Xinying;XU Xinyu;WANG Wenjie(Jinan Baotuquan Brewery Co.,Ltd.,Shandong 250115,Jinan,China)

机构地区：[1]济南趵突泉酿酒有限责任公司,山东省济南市250115

出　　处：《酿酒》2024年第2期122-126,共5页Liquor Making

摘　　要：大曲发酵力是大曲将粮食转化成乙醇的关键,大曲发酵力的大小对于评价一种大曲的好坏具有重要意义。现在普遍用的是二氧化碳失重法测定大曲发酵力,虽操作简单,但误差较大,且气体来源于多种微生物的有氧呼吸作用和发酵过程,而乙醇发酵是酵母菌无氧呼吸作用。根据发酵原理,通过检测大曲发酵液中的乙醇含量来直接检测大曲发酵力。发酵液中乙醇含量比较低,直接检测比较困难,选择紫外法和气相法检测发酵液中的乙醇含量,用乙醇含量直接表示大曲发酵力。紫外法和气相法这两种方法经过与二氧化碳法比较,发现紫外法和气相法检测大曲发酵力数据更准确,方法更科学。The fermentation power of Daqu is the key to converting grains into alcohol,and the magnitude of Daqu fermentation power is of great significance for evaluating the quality of a type of Daqu.The commonly used method now is the carbon dioxide weightlessness method to determine the fermentation power of Daqu.Although the operation is simple,the error is relatively large,and the gas comes from the aerobic respiration and fermentation process of various microorganisms,while alcohol fermentation is the anaerobic respiration of yeast.Based on the fermentation principle,this article directly detects the fermentation power of Daqu by detecting the alcohol content in the fermentation broth.The alcohol content in the fermentation broth is relatively low,making direct detection more difficult.In this article,the UV method and gas phase method were chosen to detect the alcohol content in the fermentation broth,and the alcohol content was directly used to represent the fermentation power of Daqu.Compared with the carbon dioxide method,the UV method and gas phase method were found to be more accurate and scientific in detecting the fermentation power of Daqu.

关 键 词：大曲发酵力 二氧化碳失重法 紫外法 气相法 

分 类 号：TS262.3[轻工技术与工程—发酵工程] TS261.11[轻工技术与工程—食品科学与工程] TS207.3