A heteropolysaccharide from aqueous extract of an edible mushroom, Pleurotus ostreatus cultivar: structural and biological studies |
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| Authors: | Maity Kankan K Patra Sukesh Dey Biswajit Bhunia Sanjoy K Mandal Soumitra Das Debsankar Majumdar Dibyendu K Maiti Swatilekha Maiti Tapas K Islam Syed S |
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| Institution: | aDepartment of Chemistry and Chemical Technology, Vidyasagar University, Midnapore 721102, West Bengal, India;bSangri-la Mushroom, Mohitnagar, Jalpaiguri, West Bengal, India;cDepartment of Biotechnology, Indian Institute of Technology (IIT) Kharagpur, Kharagpur 721302, West Bengal, India |
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| Abstract: | A water soluble polysaccharide isolated from the hot aqueous extract of Pleurotusostreatus cultivar was found to contain d-glucose and d-galactose in a molar ratio of nearly 7:1. Structural investigation was carried out using acid hydrolysis, methylation analysis, periodate oxidation, Smith degradation, and NMR studies (1H, 13C, DEPT-135, TOCSY, DQF-COSY, NOESY, ROESY, HMQC, and HMBC). On the basis of the above mentioned experiments the structure of the repeating unit of the polysaccharide was established as:This heteroglycan stimulates macrophages, splenocytes, and thymocytes. |
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| Keywords: | Pleurotus ostreatus cultivar Polysaccharide Structure NMR spectroscopy Immunoactivation |
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