Abstract
Poria cocos, a famous traditional Chinese medicine and a well-known food or food supplement, has shown therapeutic potential against cancer and the uneasiness of the mind. In addition, polysaccharides (PCPs) in this fungus were found to be various bioactive. In this work, one such PCP, PCP-1, extracted by deep eutectic solvent (DES) and separated using Sephadex G-15 columns, was characterized using GC–MS, HPGPC, FT-IR, and NMR, while also tested for physicochemical properties. Results indicated that PCP-1 contained 96.89 ± 3.21% total sugars and was a glucan with molecular weight of 3.2 kD. The main glycosidic linkage was 1,3-linked Glcp with 96.82 mol% content and a triple helix structure, and β-D-Glcp-(1 → linkage connected to the main chain through an O-6 atom was the backbone structure. In terms of the physicochemical property, PCP-1 was soluble in water, but not in organic solvent, and processed a relative high water-holding capacity (8.64 ± 0.14 g/g) and low oil-holding capacity (2.52 ± 0.21 g/g). In addition, in vitro, PCP-1 was found to have the ability of scavenging DPPH, hydroxyl free radical, superoxide anion radical and reducing ferric at different levels. This research would be useful for the further application of PCP-1.
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This work was supported by a grant from the National Natural Science Foundation of China (NSFC) (No. 21776142). We thank LetPub (www.letpub.com) for its linguistic assistance during the preparation of this manuscript.
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Zhai, X., Zhang, W., Pei, H. et al. Structure and physicochemical properties of polysaccharides from Poria cocos extracted by deep eutectic solvent. Glycoconj J 39, 475–486 (2022). https://doi.org/10.1007/s10719-022-10073-9
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DOI: https://doi.org/10.1007/s10719-022-10073-9