Biotechnology Bulletin ›› 2023, Vol. 39 ›› Issue (12): 276-286.doi: 10.13560/j.cnki.biotech.bull.1985.2023-0710

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Extraction of Polysaccharide from Hericium corallinum and Analysis on Its in vitro Antioxidant Activity

TU Xiao-yuan1(), CHU Lu-lu1, WANG Mian1, CHEN Bing-zhi1,2(), JIANG Yu-ji1,2()   

  1. 1. College of Food Science, Fujian Agriculture and Forestry University, Fuzhou 350002
    2. Mycological Research Center, Fujian Agriculture and Forestry University, Fuzhou 350002
  • Received:2023-07-24 Online:2023-12-26 Published:2024-01-11
  • Contact: CHEN Bing-zhi, JIANG Yu-ji E-mail:a2693050400@163.com;cbz_2006@163.com;jyj1209@163.com

Abstract:

Hericium corallinum, a newly cultivated and domesticated species, has a high content of polysaccharides with physiologically active properties such as antioxidation. Using the polysaccharide extraction rate as a benchmark, the response surface methodology was utilized to optimize the hot water extraction process of H. corallinum polysaccharides(HCP). UV, FT-IR and X-ray diffraction were used to preliminarily characterize HCP, and its antioxidative activity in vitro was measured. The results showed that the optimal process parameters for extracting HCP were an extraction temperature of 93℃, an extraction time of 2.0 h, a material-to-liquid ratio of 1∶33(g/mL), and a particle size of 80 mesh. The characterization results showed that HCP contained a small amount of proteins and nucleic acids, with typical absorption peaks of polysaccharide compounds and pyranose ring structure, and showed the presence of crystalline and non-crystalline structures. In vitro antioxidant experiments showed that HCP had good scavenging effects on DPPH, ABTS+ and ·OH radicals, and their EC50 values were 0.663 mg/mL, 0.767 mg/mL and 0.952 mg/mL, respectively. HCP has good antioxidant activity, and the results lay a research foundation for further exploring the antioxidant activity and other effects of coralline HCP in vivo.

Key words: polysaccharide of Hericium coralloides, extraction process, response surface methodology, structure, antioxidant activity