Researchers Mapped Sorghum Polyphenol Metabolism
A study traced how gut microbes convert sorghum-based polyphenols into metabolites found in muscle tissue.
Updated on Sept. 30, 2026 in Nutrition
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Scientists have identified the specific metabolic pathways through which gut microbiota process sorghum polyphenols. The research tracked these compounds from the gastrointestinal tract to their accumulation as metabolites in muscle tissue.
Why it matters
Understanding the systemic fate of sorghum polyphenols is critical because their gastrointestinal metabolism and subsequent impact on muscle-tissue composition were previously poorly understood.
Using UPLC-Orbitrap-MS and metagenomics, researchers confirmed that flavonoid glycosides undergo deglycosylation to aglycones during digestion. The study identified Flavonifractor plautii and Eubacterium ramulus as key strains facilitating this conversion.
The players
Flavonifractor plautii
This bacterial strain plays a specific role in transforming dietary flavonoids into phenolic acids within the gut.
Eubacterium ramulus
This microorganism facilitates the metabolic conversion of flavonoids to phenolic acids during the digestive process.
The details
The study revealed that high-tannin sorghum provides a higher abundance of polyphenols compared to corn, with condensed tannins remaining stable throughout the digestive process. Microbial activity in the colon specifically transforms flavonoids into phenolic acids, which are eventually detectable in the longissimus dorsi muscle.
Timeline
September 30, 2026: The research findings were formally published.
The Big Picture
This study extends the mapping of gut microbial functions established by the National Institutes of Health's Human Microbiome Project. It bridges the gap between dietary intake and tissue-level metabolite deposition.
This research provides a clearer understanding of how specific plant-based dietary choices reach and affect muscle tissue through microbial action. It highlights the importance of gut health in optimizing the bioavailability of beneficial compounds found in grains like sorghum.
The takeaway
The study confirms that gut microbiota are essential intermediaries in turning dietary plant compounds into metabolites that store in the body. Future dietary planning may increasingly focus on how specific microbial profiles enhance the uptake of these nutrient-dense polyphenols.
Further reading
Learn more about the intersection of diet and health at the Nutrition section.
More information
Review the full peer-reviewed research article for detailed methodology.
Source note: This article includes information reported by Nature.
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