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Acknowledgements We thank Hongxiang Lou, Yuemao Shen, and Shuangjiang Liu (Shandong University) for their support, the staff at Shanghai Synchrotron Radiation Facility beamline 19U and 17U for assistance with data collection, Xinwei Sun, Minzhi Jiang, Chengjia Zhang, Nannan Dong (State Key Laboratory of Microbial Technology, Shandong University) for assistance in experiments under anaerobic condition, Zhifeng Li, Jingyao Qu, Guannan Lin and Xiangmei Ren from the Core Facilities for Life and Environmental Sciences, State Key Laboratory of Microbial Technology, Shandong University for the assistance in LC-MS, DLS, and plate reader analysis

promotes collagen, elastin, and glycosaminoglycan synthesis

Health Canada continues to identify products marketed as "For Research Use Only Not for Human Consumption." This type of labelling does not make these products legal or exempt from regulatory requirements

Safety in human therapeutic contexts is not established, and the compound is not FDA-approved

2 A shows the top 50 most differentially regulated metabolites between the stimuli

However, in certain overwhelming, acute, life-threatening situations, administration of dosages exceeding the usual dosages may be justified and may be in multiples of the oral dosages