iCinac酸化分析仪在乳酸菌发酵剂产酸活力及稳定性分析中的应用  

The Application of iCinac Acidification Analyzer in the Analysis of Acid Production Activity and Stability of Lactic Acid Bacteria Starter Culture

作　　者：冯立科 陈春裕 白晓彤 陈蓓蕾 黄隽光 FENG Like;CHEN Chunyu;BAI Xiaotong;CHEN Beilei;HUANG Junguang(Guangdong Yantang Dairy Co.,Ltd.,Guangzhou 511356,China)

机构地区：[1]广东燕塘乳业股份有限公司,广东广州511356

出　　处：《现代食品》2024年第21期199-202,共4页Modern Food

摘　　要：目的:利用iCinac酸化分析仪对乳酸菌发酵剂A和B的产酸活力及稳定性进行测试。方法:将发酵剂稀释并接种到培养液中,于恒温水槽中发酵,同时使用pH电极监测发酵过程的pH值变化,以评估乳酸发酵剂酸化活性,获得产酸活力曲线。结果:相较于传统非连续测量pH值的方法,iCinac酸化分析仪显著缩短了测试时间,可实现发酵过程pH值的连续监测,能够直观反映产酸活力曲线。各批次发酵剂活力均达到了其声称的产酸活力,发酵剂A的产酸能力及稳定性均优于发酵剂B。结论:iCinac酸化分析仪为乳酸菌发酵剂的质量控制工作提供了可靠的技术支持,可广泛应用于发酵剂质量控制、发酵乳制品工艺优化以及菌株筛选优化等领域。Objective:To test the acid-producing activity and stability of lactic acid bacteria starter cultures A and B by using iCinac acidification analyzer.Method:Dilute and inoculate the fermentation agent into the culture medium,ferment in a constant temperature water bath,and monitor the pH changes during the fermentation process using a pH electrode to evaluate the acidification activity of the lactic acid fermentation agent and obtain the acid production activity curve.Result:Compared with the traditional non-continuous pH measurement method,the iCinac acidification analyzer significantly shortened the test time,realized the continuous monitoring of the pH value of the fermentation process,and could intuitively reflect the acid production activity curve.The activity of each batch of starter culture reached its claimed acid-producing activity,and the acid-producing capacity and stability of starter culture A were better than that of starter culture B.Conclusion:The iCinac acidification analyzer provides reliable technical support for the quality control of lactic acid bacteria starter culture,and can be widely used in the fields of starter culture quality control,fermented dairy product process optimization and strain screening optimization.

关 键 词：乳酸菌发酵剂 iCinac酸化分析仪 产酸活力 稳定性 

分 类 号：TS252.54[轻工技术与工程—农产品加工及贮藏工程]