Structural elucidation and antioxidant activity of a novel heteroglycan from Tricholoma Lobayense |
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Authors: | Shomaila Mehmood Li-Yuan Zhou Xiao-Fang Wang Xiao-Du Cheng Fan-Ju Meng Ya Wang |
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Affiliation: | 1. School of Life Sciences, Anhui University, Hefei, Anhui, P. R. China;2. Hefei Institute of Product Quality Supervision &3. Inspection, Hefei, Anhui, P. R. China |
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Abstract: | A novel heteroglycan TLH-G was successfully isolated from Tricholoma lobayense cultivated in south China. TLH-G was composed of five monosaccharides, namely, mannose, rhamnose, glucuronic acid, glucose and galactose, and consisted of →1)-β-D-Glcp-(6→ and →1)-α-D-Galp-(3→ motifs. TLH-G had excellent scavenging activities towards 2,2-diphenyl-1-picrylhydrazyl (DPPH) and 2,2′-azino-bis(3-ethylbenzothiazoline-6-sulphonic acid) (ABTS) radicals. Structure-activity relationship analysis demonstrated that glycosidic bond types, monosaccharide composition, and branching degree were more important for the antioxidant activity of polysaccharides from Tricholoma lobayense than other structural factors. All the above results showed that the growth environment played a crucial role in the structure and antioxidant activity of polysaccharides from Tricholoma lobayense. |
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Keywords: | Growth environment polysaccharide structure-activity relationship structural elucidation Tricholoma lobayense |
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