Dictyophora indusiata polysaccharide fractions promote the proliferation and metabolism of Bifidobacterium longum F2
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Abstract
This study aims to investigate the effect of Dictyophora indusiata polysaccharide fractions DIP0p and DIP1p on the proliferation and metabolism of Bifidobacterium longum F2. In vitro static digestion showed that the total sugar, reducing sugar content, functional groups and surface morphology of DIP0p and DIP1p did not change significantly during the saliva, gastric and small intestine digestion. In particular, DIP0p and DIP1p promoted the proliferation and metabolism of B. longum F2. Here, the acetic acid levels of DIP0p and DIP1p were 265.63 ± 5.57 ppm and 259.14 ± 4.31 ppm, which were significantly higher than those of the control group at 48 h of fermentation. In addition, DIP0p increased the metabolites related to anti-inflammation compared to DIP1p during fermentation, including itaconic acid and trans-cinnamic acid. This provides a theoretical basis for the development of targeted prebiotics from D. indusiata polysaccharides and the understanding of the precise biological activities of edible fungi polysaccharides.
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