Effect of extraction temperatures on in vitro antioxidant activities of polysaccharides from Ophiocordyceps sobolifera

Hue University Journal of Science: Natural Science - 2019
Tran Van Khoa1, Le Trung Hieu1, Le Lam Son1, Ho Xuan Anh Vu1, Trinh Tam Kiet2, Tran Thi Van Thi1
1University of Sciences, Hue University, 77 Nguyen Hue St., Hue, Viet Nam
2Institute of Microbiology and Biotechnology, Ha Noi National University, 144 Xuan Thuy St., Dich Vong Hau, Cau Giay, Ha Noi, Viet Nam

Tóm tắt

The objective of this paper is to evaluate the effects of extraction temperatures on in vitro antioxidant potential of polysaccharides from the Ophiocordyceps sobolifera. The antioxidant capacity of Ophiocordyceps sobolifera polysaccharides was evaluated using 2,2‐diphenyl‐1‐picrylhydrazyl (DPPH) as a radical scavenger and the total antioxidant capacity methods. The results show that the highest antioxidant activity of the polysaccharides could be attained at the extraction temperature of 80°C. The total antioxidant capacity of olysaccharides from Ophiocordyceps sobolifera is from 0.1183 ± 0.0011 to 0.1454 ± 0.0021 mg GA/g or from 0.1105 ± 0.0004 to 0.1215 ± 0.0006 μmol AS/g. The polysaccharides have the most potent antioxidant activity with the lowest half‐maximal inhibitory concentration (IC50) value ranging from 0.97 mg/mL to 1.06 mg/mL.

Từ khóa

#Ophiocordyceps sobolifera #polysaccharides #extraction temperature #antioxidant activity

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Hue University Journal of Science: Natural Science

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