AUTHOR=Liu Jian-Ming , Fehér Csaba , Cao Mingfeng , Lu Fuping , Jensen Peter Ruhdal TITLE=Editorial: Lactic Acid Bacteria: Microbial Metabolism and Expanding Applications JOURNAL=Frontiers in Bioengineering and Biotechnology VOLUME=9 YEAR=2021 URL=https://www.frontiersin.org/journals/bioengineering-and-biotechnology/articles/10.3389/fbioe.2021.794164 DOI=10.3389/fbioe.2021.794164 ISSN=2296-4185