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Chinese Agricultural Science Bulletin ›› 2025, Vol. 41 ›› Issue (32): 124-134.doi: 10.11924/j.issn.1000-6850.casb2025-0220

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Research Advances on Lactic Acid Bacteria Affecting Wine Aroma

LIU Yaqi1(), GUO Shuai1, ZHANG Yue1, GAO Yan1, GU Xiaoliang1, HE Xuli1, WANG Yanjuan2, JU Ning1()   

  1. 1 School of Food Science and Engineering, Ningxia University, Yinchuan 750021
    2 Comprehensive Security Center, Ordos Development and Reform Commission, Ordos, Inner Mongolia 017070
  • Received:2025-03-20 Revised:2025-08-27 Online:2025-11-18 Published:2025-11-18

Abstract:

Aroma is one of the key quality indicators of wine. The wine-making process is fundamentally driven by microbial metabolic activities, among which the malic-lactic fermentation (MLF) led by lactic acid bacteria has a significant impact on the formation of wine aroma. Microorganisms from different terroirs contribute to the unique aromas of wines from distinct regions. This study summarizes the aroma characteristics of naturally fermented red wines from major wine regions worldwide and the corresponding biodiversity of lactic acid bacteria in these regions. It analyzes the influence of lactic acid bacteria on the formation of wine aroma compounds and delves into the roles of enzymes and metabolic pathways in the production of these compounds during lactic acid fermentation. This review provides a theoretical basis for further exploring and utilizing local lactic acid bacteria resources and developing wine fermentation agents with regional characteristics to improve wine quality.

Key words: natural fermentation, wine aroma compounds, lactic acid bacteria diversity, lactic acid bacteria metabolism, diacetyl synthesis pathway