Microbial Metabolism of Naringin and the Impact on Antioxidant Capacity

作者：Xuan Zeng, Yuying Zheng, Yan He, Jiashuo Zhang, Wei Peng, Weiwei Su · 发表于：Nutrients · 年份：2022 · DOI：10.3390/nu14183765 · 被引用次数：41 · 研究领域：Microbial Metabolites in Food Biotechnology、Biochemical Analysis and Sensing Techniques、Phytochemistry and Bioactive Compounds

Naringin is a dietary flavonoid glycoside with broad bioactivities, and it has been found to undergo extensive microbial metabolism in human gut. Microbial metabolites are believed to play an important role in the overall bioactivity of naringin. However, knowledge is scarce about its microbial metabolism in laboratory rats, which are the most commonly used animal model for naringin-related biomedical studies. Herein, we profiled the microbial metabolism of naringin in rat by an in vitro anaerobic fermentation combined with LC-MS/MS methods. A total of 35 microbial metabolites were identified, and corresponding metabolic pathways were proposed. Naringin and its metabolites were further quantified in fermentation samples. Rhoifolin, neoeriocitrin, neohesperidin, naringenin, methylated naringin, and hydroxylated naringin were detected as the primary microbial metabolites. Moreover, antioxidant capacity assays suggested that fermentation-associated microbial metabolites exhibited higher antioxidant activity than original naringin. Obtained results contribute to a more comprehensive understanding of the microbial metabolism and antioxidant capacity of naringin.