亚硝酸盐对酸菜中菌属微生物量的影响及相关性分析  

Effect of Nitrite on Microbial Biomass of Genera in Sauerkraut and Correlation Analysis

作　　者：魏振勇 李娜[1,2] 孙全敏 王严 迟乃玉 张庆芳[1,2] WEI Zhen-yong;LI Na;SUN Quan-min;WANG Yan;CHI Nai-yu;ZHANG Qing-fang(College of Life and Health,Dalian University,Dalian 116622,China;Liaoning Marine Microbial Engineering and Technology Research Center,Dalian 116622,China)

机构地区：[1]大连大学生命健康学院,辽宁大连116622 [2]辽宁省海洋微生物工程技术研究中心,辽宁大连116622

出　　处：《中国调味品》2023年第10期33-38,72,共7页China Condiment

摘　　要：为深入探讨亚硝酸盐(NIT)对东北酸菜发酵过程中各菌属微生物量的影响及其与OD_(600 nm)、理化指标的相关性,该研究以S组(自然发酵)、Y组(添加亚硝酸盐)不同发酵时间点酸菜匀浆作为研究对象,对测得的指标(理化指标、OD_(600 nm)、微生物量)进行相关性分析。结果表明,NIT与总酸(TAN)、OD_(600 nm)为极显著负相关,与pH为极显著正相关,3种乳酸菌菌属Lactococcus、Leuconostoc和Lactobacillus均与pH、NIT呈负相关,与OD_(600 nm)、TAN呈正相关,uncultured_bacterium_f_Enterobacteriaceae与pH、NIT呈负相关,与TAN、OD_(600 nm)呈正相关,NIT的降解与Lactococcus、Leuconostoc具有较强的相关性。文章阐明NIT可以影响酸菜菌属的微生物量,优势乳酸菌与酸菜匀浆的理化指标有较强的相关性,为东北酸菜发酵菌剂的研发提供了重要的理论参考。In order to further explore the effect of nitrite(NIT)on the microbial biomass of each genus in the fermentation process of Chinese northeast sauerkraut and its correlation with OD_(600 nm)and physicochemical indexes,in this study,with the sauerkraut homogenate of S group(natural fermentation)and Y group(adding nitrite)at different fermentation time points as the research object,the correlation analysis of the measured indexes(physicochemical indexes,OD_(600 nm)and microbial biomass)is carried out.The results show that NIT has a highly significant negative correlation with total acid(TAN)and OD_(600 nm),and a highly significant positive correlation with pH.Three genera of lactic acid bacteria such as Lactococcus,Leuconostoc and Lactobacillus are all negatively correlated with pH and NIT,and positively correlated with OD_(600 nm)and TAN.Uncultured_bacterium_f_Enterobacteriaceae is negatively correlated with pH and NIT,and positively correlated with TAN and OD_(600 nm).The degradation of NIT is strongly correlated with Lactococcus and Leuconostoc.In this paper,it is elucidated that NIT can affect the microbial biomass of genera in sauerkraut,and there is a strong correlation between the dominant lactic acid bacteria and physicochemical indexes of sauerkraut homogenate,which has provided important theoretical references for the research and development of Chinese northeast sauerkraut fermentation agent.

关 键 词：亚硝酸盐 东北酸菜 微生物量 相关性分析 

分 类 号：TS201.3[轻工技术与工程—食品科学]