Journal
APPLIED BIOCHEMISTRY AND BIOTECHNOLOGY
Volume 186, Issue 1, Pages 217-232Publisher
HUMANA PRESS INC
DOI: 10.1007/s12010-018-2732-4
Keywords
Acetic acid fermentation; Ethanol respiratory chain; Acetobacter pasteurianus JST-S; Environmental stress; Metabolic flux analysis
Funding
- National Natural Science Foundation of China [31601465]
- Hefei University of Technology [JZ2017YYPY0247/JZ2016YYPY0041]
- Anhui Science and Technology Project [15CZZ03100]
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The acetic acid bacterium Acetobacter pasteurianus plays an important role in acetic acid fermentation, which involves oxidation of ethanol to acetic acid through the ethanol respiratory chain under specific conditions. In order to obtain more suitable bacteria for the acetic acid industry, A. pasteurianus JST-S screened in this laboratory was compared with A. pasteurianus CICC 20001, a current industrial strain in China, to determine optimal fermentation parameters under different environmental stresses. The maximum total acid content of A. pasteurianus JST-S was 57.14 +/- 1.09 g/L, whereas that of A. pasteurianus CICC 20001 reached 48.24 +/- 1.15 g/L in a 15-L stir stank. Metabolic flux analysis was also performed to compare the reaction byproducts. Our findings revealed the potential value of the strain in improvement of industrial vinegar fermentation.
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