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Targeted volatile fatty acid production based on lactate platform in mixed culture fermentation: Insights into carbon conversion and microbial metabolic traits. | LitMetric
In this study, the effects of fermentation pH and redox potential on the performance of the lactate platform were comprehensively evaluated. The results indicated that the type of acidogenic fermentation was influenced by redox potential, while pH was correlated with volatile fatty acid yield. The highest propionate yield was achieved under anaerobic conditions at a pH of9, with the dominant genus Serpentinicella producing propionate through the acrylate pathway. The highest acetate yield was produced under facultative conditions at a pH of 6. This production was primarily facilitated by the dominant genera unclassified_f__Enterobacteriaceae and Desulfovibrio, which exhibited significant upregulation of the expression of related genes. Furthermore, ecological processes were employed to establish the relationship between environmental factors and microbial communities. This study emphasized the process of converting lactate into volatile fatty acid, providing a theoretical basis for future strategies aimed at regulating targeted acid production.
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