Molecular biology: Fantastic toolkits to improve knowledge and application of acetic acid bacteria
2022
Yang, Haoran | Chen, Tao | Wang, Min | Zhou, Jingwen | Liebl, Wolfgang | Barja, François | Chen, Fusheng
Acetic acid bacteria (AAB) are a group of gram-negative, obligate aerobic bacteria within the Acetobacteraceae family of the alphaproteobacteria class, which are distributed in a wide variety of different natural sources that are rich in sugar and alcohols, as well as in several traditionally fermented foods. Their versatile capabilities are not limited to producing acetic acid and brewing vinegar, as their names suggest. They can also be used for fixing nitrogen, yielding pigments and exopolysaccharides (EPS), and most typically, producing a variety of aldehydes, ketones and other organic acids from the incomplete oxidation of the corresponding alcohols and/or sugars (also referred to as oxidative fermentation). In order to gain more insight into these organisms, molecular biology techniques have been extensively applied in almost all aspects of AAB research, including their identification and classification, acid resistance mechanisms, oxidative fermentation, EPS production, thermotolerance and so on. In this review, we mainly focus on the application of molecular biological technologies in the advancement of research into AAB while presenting the progress of the latest studies using these techniques.
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