Improving acidity and flavors of citrus juice as well as its antioxidant activity by cofermentation with deacidification bacteria combination  

作　　者：Minyi Li Junwei Qin Bin Zhong Fangrun Hao Zhenqiang Wu 

机构地区：[1]School of Biology and Biological Engineering,South China University of Technology,Guangzhou,510006,China [2]Pan Asia(Jiangmen)Institute of Biological Engineering and Health,Jiangmen,529080,China [3]State Key Laboratory of Applied Microbiology Southern China,Institute of Microbiology,Guangdong Academy of Sciences,Guangzhou,510070,China

出　　处：《Food Bioscience》2023年第3期1249-1257,共9页食品生物科学（英文）

基　　金：supported by State Key Laboratory of Applied Microbiology Southern China(Grant No.SKLAM003-2021).

摘　　要：The high acidity and poor taste of some citrus juice(CJ)affect its application value.In this study,a Hanseniaspora pseudoguilliermondii B4 was isolated and identified from lemon which could effectively degrade organic acids in CJ.Seven lactic acid bacteria(LAB)were selected to coferment with B4 in sequential and simultaneous inocu-lation on CJ to improve its taste and nutritional value.The physicochemical parameters,total phenolic content(TPC),total flavonoid content(TFC)and antioxidant activity were evaluated before and after mixed fermenta-tion.The results revealed that cofermentation with B4 and Bifidobacterium lactis 20435 could not only decreased acidity by 96.05%but also increased TPC,TFC,DPPH and ABTS radical scavenging activity by 22.54%,25.42%,34.47%and 52.63%,respectively.In addition,3-methyl-1-butanol,2-methyl-1-butanol and phenylethyl alcohol were significantly(p<0.05)increased,while terpenes were mostly decreased,compared to unfermented juice.The ester content increased and enhanced the flavor compounds of fermented CJ.This work provides a new strategy of using H.pseudoguilliermondii and LAB to adjust the acidity and taste of CJ as well as improve its bioactive substances and antioxidant activity.

关 键 词：Citrus juice Hanseniaspora pseudoguilliermondii DEACIDIFICATION Antioxidant activity Volatile flavor profiles 

分 类 号：TS255.44[轻工技术与工程—农产品加工及贮藏工程]