Different Molecular Weight Black Garlic Melanoidins Alleviate High Fat Diet Induced Circadian Intestinal Microbes Dysbiosis

The purpose of this study is to explore the effects of different molecular weight black garlic melanoidins (MLDs) on high fat diet (HFD) induced dysrhythmia of intestinal microorganisms. The results showed that a HFD disturbed the periodic fluctuation of the gut microbiome and that oral gavage of low molecular weight melanoidin (LMM) or high molecular weight melanoidin (HMM) reversed these cyclical variations in part, which resulted in an increase in the number of bacteria producing short-chain fatty acids (SCFAs) and a decrease in the oscillation of inflammation-related bacteria within a specific time period over the course of 1 day. Moreover, structural analysis showed different structure characterizations of LMM and HMM, which are related to the differences in flora oscillation. Therefore, the data showed that LMM and HMM relieve the circadian rhythm disorder of intestinal microbiota induced by a HFD in mice, which supported the further study of MLDs as a new dietary assistant strategy to improve chronic diseases.