Purification and Structure Characterization of the Crude Polysaccharide from the Fruiting Bodies of <i>Butyriboletus pseudospeciosus</i> and Its Modulation Effects on Gut Microbiota

Abstract

Polysaccharides from the species of Boletaceae (Boletales, Agaricomycetes, Basidiomycota) are economically significant to both functional foods and medicinal industries. The crude polysaccharide from Butyriboletus pseudospeciosus (BPP) was prepared, and its physicochemical properties were characterized through the use of consecutive experimental apparatus, and its impact on the gut microbiota of Kunming mice was evaluated. Analyses of the structure characteristics revealed that BPP was mainly composed of Man, Glc, and Gal, possessing the pyranose ring and β/α-glycosidic linkages. TG analysis exhibited that BPP had great heat stability. The SEM observation performed demonstrated that BPP appeared with a rough, dense, and porous shape. Through the BPP intervention, the serum and fecal biochemical index in mice can be improved obviously (p p p B. pseudospeciosus could serve as potential functional food or medicine.

Keywords

• crude polysaccharide from <i>Butyriboletus pseudospeciosus</i> (BPP)
• physicochemical properties
• functions
• gut microbiota
• Tax4Fun