Ultrasound-Assisted Extraction of Polysaccharides from Lyophyllum decastes: Structural Analysis and Bioactivity Assessment

文献类型： 外文期刊

第一作者： Wu, Qiong

作者： Wu, Qiong;Liang, Bin;Wang, Jiaming;Dai, Yonggang

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关键词： Lyophyllum decastes; polysaccharides; biological activity

期刊名称：MOLECULES （ 影响因子：4.6； 五年影响因子：5.0 ）

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年卷期： 2025 年 30 卷 4 期

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收录情况： SCI

摘要： This study employed ultrasound-assisted extraction (UAE) to isolate polysaccharides from Lyophyllum decastes, which were subsequently fractionated into two components, LDP-A1 and LDP-B1, using DEAE cellulose-52 and Sephacryl S-500. The structural characteristics of the polysaccharides were preliminarily analyzed using high-performance liquid chromatography (HPLC), Fourier-transform infrared (FTIR) spectroscopy, scanning electron microscopy (SEM), X-ray diffraction (XRD), and Congo red staining. The results indicate significant differences between LDP-A1 and LDP-B1 in terms of molecular weight, monosaccharide composition, and structural features. LDP-A1 (2.27 x 106 Da) exhibits a significantly higher molecular weight compared to LDP-B1 (9.80 x 105 Da), with distinct differences in monosaccharide types and content. Both polysaccharides contain beta-glycosidic bonds. LDP-B1 adopts a sheet-like structure with an amorphous internal arrangement and a triple-helix configuration, whereas LDP-A1 is rod-shaped, with a crystalline internal structure, and lacks the triple-helix configuration. In terms of biological activity, both polysaccharides exhibit certain activities, but LDP-B1 shows significantly stronger activity in antioxidant, hypoglycemic, anti-inflammatory, and anticancer effects. In summary, LDPs exhibit significant biological activity, especially outstanding performance in antioxidant, hypoglycemic, anti-inflammatory, and anticancer effects, proving their potential for development in functional foods and pharmaceuticals. Their unique structural characteristics and diverse biological activities provide a solid theoretical foundation for further exploration of LDPs in health promotion and disease prevention, opening up new research directions and application prospects.

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