Sugarcane polyphenol and fiber to affect production of short-chain fatty acids and microbiota composition using in vitro digestion and pig faecal fermentation model

This study aimed to examine the effects of sugarcane polyphenol and fiber (Phytolin + Fiber) on gut microbiota, short-chain fatty acids (SCFAs) production and phenolic metabolites production using in vitro digestion and fermentation model. Microbial profiling by 16S rRNA sequencing was used to analyze the pig faecal microbiota profile. SCFAs were identified and quantified by GC-FID, and phenolic metabolites were characterized by LC-ESI-QTOF-MS/MS. The results showed that Phytolin + Fiber exert synergistic effects on the pig gut microbiota by increasing the relative abundances of Lactobacillus and Catenibacterium, and decreasing the relative abundances of Mogibacterium, Dialister, and Escherichia-Shigella. Phytolin + Fiber also significantly increased the total SCFAs production, particularly the propionic and butyric acids. Production of phenolic metabolites related to major polyphenols in Phytolin were tentatively identified. These results suggest that Phytolin + Fiber could be beneficial to human colon health given the similarities between pig and human intestine in terms of physiology and microbiome.

Automated summary

In this study, the effects of sugarcane polyphenol and fiber (Phytolin + Fiber) on gut microbiota, SCFAs production, and phenolic metabolites production were examined using an in vitro digestion and fermentation model. The results showed that Phytolin + Fiber had synergistic effects on the pig gut microbiota, increasing the relative abundances of Lactobacillus and Catenibacterium while decreasing the relative abundances of Mogibacterium, Dialister, and Escherichia-Shigella. Phytolin + Fiber also significantly increased the production of total SCFAs, particularly propionic and butyric acids. Tentative identification of phenolic metabolites related to major polyphenols in Phytolin was also achieved. These findings suggest that Phytolin + Fiber may be beneficial for human colon health, considering the similarities between pig and human intestines in terms of physiology and microbiome.