Journal of Tea Science Research, 2024, Vol.14, No.2, 92-101 http://hortherbpublisher.com/index.php/jtsr 98 communities, particularly the interaction between Komagataeibacter rhaeticus and Brettanomyces bruxellensis, has been shown to influence biofilm production and fermentation qualities. Additionally, the application of enzymatic fermented soybean as a fertilizer in tea plantations has been found to regulate soil microbial communities and positively affect lipid metabolites in tea shoots, leading to higher quality tea (Zhang et al., 2022). These innovative techniques highlight the potential for controlled microbial fermentation to produce consistent and high-quality tea products. 7.3 Safety considerations in microbial fermentation Safety is a critical consideration in microbial fermentation, especially in the production of fermented foods and beverages. The microbiome in tea fermentation not only impacts quality but also safety. For example, the integrated meta-omics approach used in Pu-erh tea fermentation has provided insights into the microbial communities and their metabolic activities (Figure 3), which are essential for ensuring the safety of the final product. Similarly, understanding the microbial dynamics in traditional fermented teas like Miang and Fuzhuan Brick Tea can help identify potential pathogenic microbes and ensure safe fermentation practices (Unban et al., 2020). By monitoring and controlling the microbial communities involved in tea fermentation, producers can mitigate risks and ensure the safety of their products. Figure 3 The ellipse heatmap of relationships between soil bacterial communities and soil metabolites (Adopted from Zhang et al., 2022) Image caption: (A) The relationship of soil bacterial communities and soil metabolites in CK vs EFS group. (B) The relationship of soil bacterial communities and soil metabolites in UF vs EFS group (Adopted from Zhang et al., 2022)
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