Khoa, T.V., Hieu, L.T., Son, L.L., Vu, H.X.A., Kiet, T.T. and Thi, T.T.V. 2019. Effect of extraction temperatures on in vitro antioxidant activities of polysaccharides from Ophiocordyceps sobolifera. Hue University Journal of Science: Natural Science. 128, 1D (Nov. 2019), 17-21. DOI:https://doi.org/10.26459/hueuni-jns.v128i1D.5273.