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Comparative Study on the Polysaccharide Contents and Antioxidant Activities of Hippophae rhamnoides subsp. sinensis and Hippophae gyantsensis
Published on: August 15, 2025
Composition and antioxidant activities of four polysaccharides extracted from Herba Lophatheri
Qing Ge1, Jian-wei Mao, Xiao-qing Guo
1Key Laboratory of Chemical and Biological Processing Technology for Farm Products of Zhejiang Province, School of Biological and Chemical Engineering, Zhejiang University of Science and Technology, Hangzhou, 310023, PR China. gq0318@163.com
Abstract:
Four polysaccharides (BLF80-A, BLF80-B, BLF80-C and BLF80-D) were isolated by hot-water extraction and purified from the leaves of Herba Lophatheri by DEAE-Sepharose fast flow. Their chemical and physical characteristics were determined and antioxidant activities were investigated on the basis of DPPH radical assay, hydroxyl radical assay and superoxide radical assay. The results showed that four polysaccharides exhibited antioxidant activities in a concentration-dependent manner, and the higher molecular weight, the stronger antioxidant activities of polysaccharides. Besides, the monosaccharide compositions of polysaccharides also influence their antioxidant activities. BLP80-D showed the strongest scavenging ability, followed by BLP80-C, BLP80-B and BLP80-A.
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