Zhejiang Gongshang University 1 article published in JoVE Immunology and Infection Analysis of Interactions between Endobiotics and Human Gut Microbiota Using In Vitro Bath Fermentation Systems Yunfei Hu1, Huahai Chen1, Ping Li2, Baiyuan Li1, Linyan Cao1, Changhui Zhao1, Qing Gu2, Yeshi Yin1 1Key Laboratory of Comprehensive Utilization of Advantage Plants Resources in Hunan South, College of Chemistry and Bioengineering, Hunan University of Science and Engineering, 2College of Food and Biological Engineering, Zhejiang Gongshang University Described here is a protocol to investigate the interactions between endobiotics and human gut microbiota using in vitro batch fermentation systems.