Characterization of the core microflora and nutrient composition in packaged pasteurized milk products during storage  

作　　者：Ruixue Ding Shanshan Yang Lijuan Geng Yumeng Liu Baoping He Liyun Liu Xiqing Yue Rina Wu Junrui Wu 

机构地区：[1]Liaoning Engineering Research Center of Food Fermentation Technology,Shenyang Key Laboratory of Microbial Fermentation Technology Innovation,College of Food Science,Shenyang Agricultural University,Shenyang 110866,China [2]Shenyang Institute for Food and Drug Control,Shenyang 110122,China [3]Inner Mongolia Yili Industrial Group Co.,Ltd.,Hohhot 010080,China [4]China Mengniu Dairy Co.,Ltd.,Hohhot 010000,China

出　　处：《Food Science and Human Wellness》2023年第4期1279-1286,共8页食品科学与人类健康（英文）

基　　金：supported by the National Natural Science Foundation of China(31871831,32172279);Liaoning Provincial Natural Science Foundation regional Joint Fund project(2020-MZLH-34);Shenyang City Youth Science and Technology Innovation Leading Talent Project(RC200495);Shenyang Science and technology innovation platform project(21-103-0-14,21-104-0-28).

摘　　要：Pasteurized milk contains complex microbial communities affected by sterilization and storage conditions.This complex microflora may be the possible reason that pasteurized dairy products are highly prone to spoilage.In this study,packaged pasteurized milk products collected from dairy processing factories in China were stored at 0,4,10,15,and 25℃ for 0−15 days and subjected to microbial identification using high-throughput sequencing.Accordingly,6 phyla and 44 genera were identified as the dominant microbiota.Moreover,the changes in nutritional composition of the pasteurized milk,including in 16 free amino acids,7 taste values,and 8 chemical constituents,were analyzed using principal component and multi-factor analyses.The Pearson correlation analysis identified Pseudomonas,Aeromonas,Paenibacillus,and Serratia genera as the core functional microbiota that significantly affects the nutritional composition of pasteurized milk.Hence,the results provide a comprehensive understanding of the safety and shelf-life of stored pasteurized milk.

关 键 词：Pasteurized milk Storage conditions MICROBIOTA High-throughput sequencing(HTS) 

分 类 号：TS252.1[轻工技术与工程—农产品加工及贮藏工程]