Abstract
Morchella is the famous medicinal fungi in the ascomycetes. In this study, a new water-soluble polysaccharide (MSP-3-1) with an average molecular weight of 2.35 × 107 Da was extracted and purified from fruiting bodies of cultivated M. Sextelata. The structural characterization and biological activities of purified polysaccharide was further investigated. The results indicated that MSP-3-1 was mainly a α-glucan, mainly consisting of mannose (Man), glucose (Glc) and galactose (Gal) in a ratio of 5.10: 91.39: 3.51. Its surface morphology exhibited irregular lamellar structures with small voids. And the particle size analysis showed that MSP-3-1 was the homogeneous nanoparticle in water solution. Furthermore, the antioxidant activity analysis showed that MSP-3-1 possessed certain scavenging activity against hydroxyl radicals, DPPH radicals and ABTS radicals in a dose-dependent manner. Immunological tests suggested that MSP-3-1 could significantly promote the proliferation, phagocytosis and nitric oxide (NO) production of macrophage RAW264.7. Thus, our results will provide a theoretical basis for the development and utilization of Morchella Sextelata polysaccharides as an immunmodulatory component in functional foods.
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This work was supported by the Project of Applied Basic Research in Wuhan (Grant No. 2020020601012297) and the Fund for China Agriculture Research System of Edible Fungi (Grant No. CARS-20).
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Zuo Zhang and Menghua Shi equally contributed to the work.
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Zhang, Z., Shi, M., Zheng, H. et al. Structural characterization and biological activities of a new polysaccharide isolated from Morchella Sextelata. Glycoconj J 39, 369–380 (2022). https://doi.org/10.1007/s10719-022-10058-8
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DOI: https://doi.org/10.1007/s10719-022-10058-8