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Article Abstract
Starch-tannic acid complex is a type of resistant starch, while the influence of these complexes with different starch chain-length distributions (CLDs) on gut microbiota is unclear. Therefore, starch-tannic acid complexes were prepared from five commercial starches with diverse CLDs, and their influence on the gut microbiota was explored using in vitro fermentation with human fecal microbiota. For the first time, results showed that wheat and corn starch-tannic acid complexes significantly promoted propionate production (p < 0.05) by up to 88 % compared to their retrograded starch counterparts. This was possibly related to the distinct microbiota composition induced by starch-tannic acid complexes, e.g., the amount of Segatella, Eubacterium_rectale_ATCC_33656, and CAG-352 was all significantly decreased (p < 0.05), while their abundances were negatively correlated with propionate production. Notably, starch-tannic acid complexes with a DP range of 12 < DP ≤ 24 were negatively correlated with the amount of Segatella, suggesting that the CLD of complexes is a crucial factor in determining SCFA production via regulating certain bacteria. Collectively, these results highlight the possibility of applying starch-tannic acid complex to target certain gut bacteria and SCFAs production, ultimately improving human health.
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| http://dx.doi.org/10.1016/j.carbpol.2025.124077 | DOI Listing |
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Article Synopsis
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