Microbial Diversity in Northeast Sauerkraut Fermentation
Author Information
Author(s): Xu Xiangru, Zhang Meng, Tao Yuefei, Wei Wei, Kapolos John
Primary Institution: School of Agricultural Engineering, Jiangsu University, Zhenjiang, China
Hypothesis
During the fermentation of Northeast sauerkraut, nitrite degradation is driven by both enzymatic and acidic processes.
Conclusion
The study identifies key microbial groups responsible for nitrite degradation in Northeast sauerkraut fermentation, highlighting the roles of Aeromonas and Lactobacillus.
Supporting Evidence
- During fermentation, nitrite concentration peaked at 32.15 mg/kg on day 7.
- The abundance of nitrite reductase genes reached their peak values during the nitrite peak period.
- Microbial groups such as Aeromonas and Lactobacillus were identified as key players in nitrite degradation.
- The pH of the fermentation broth decreased significantly as fermentation progressed.
- High-throughput sequencing revealed distinct microbial community structures at different fermentation stages.
Takeaway
This study looks at how certain tiny living things help break down nitrite in sauerkraut, which is important for making it safe to eat.
Methodology
The study used high-throughput sequencing and statistical analysis to monitor nitrite concentration, pH, and microbial community changes during fermentation.
Potential Biases
Potential bias in identifying non-lactic acid bacteria due to their low abundance.
Limitations
The study may not account for all microbial groups due to the limitations of current detection methods.
Statistical Information
P-Value
p<0.05
Statistical Significance
p<0.05
Digital Object Identifier (DOI)
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