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  • Title: Effects of Heat Treatment on the Structural Characteristics and Antitumor Activity of Polysaccharides from Grifola frondosa.
    Author: Ji HY, Chen P, Yu J, Feng YY, Liu AJ.
    Journal: Appl Biochem Biotechnol; 2019 Jun; 188(2):481-490. PubMed ID: 30536035.
    Abstract:
    This study investigated the effects of heat treatment on structural characteristics and in vitro antitumor activity of polysaccharides from Grifola frondosa. GFP-4 (extracted at 4 °C), GFP-4-80 (80 °C treatment on GFP-4) and GFP-80 (extracted at 80 °C) were prepared, and the chemical composition analysis showed that their total sugar contents were all higher than 90%, high-performance gel-permeation chromatography (HPGPC), ion chromatography (IC) and Fourier-transform infrared spectroscopy (FTIR) results demonstrated that GFP-4 were degraded and denatured after 80 °C heat treatment, MTT and JC-1 results showed that GFP-4 exhibited higher inhibitory effects on HepG2 cells in vitro than GFP-4-80 and GFP-80. Our study suggested that heat treatment at 80 °C on polysaccharides from Grifola frondosa would destroy their structure and attenuate their antitumor effects.
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