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Chemical characterization and antioxidant activities of polysaccharides isolated from the stems of Parthenocissus tricuspidata

Liang, Xiaoxia, Gao, Yingying, Fei, Wenbo, Zou, Yuanfeng, He, Min, Yin, Lizi, Yuan, Zhixiang, Yin, Zhongqiong, Zhang, Wei
International journal of biological macromolecules 2018 v.119 pp. 70-78
2,2-diphenyl-1-picrylhydrazyl, Fourier transform infrared spectroscopy, Parthenocissus tricuspidata, anion exchange chromatography, antioxidant activity, arabinose, butylated hydroxytoluene, chemical structure, galactose, gel chromatography, glucuronic acid, hydroxyl radicals, mannose, nuclear magnetic resonance spectroscopy, polysaccharides, stems, superoxide anion, xylose
Four polysaccharides, PTP–1, PTP–2, PTP–3 and PTP–4, were obtained from the water extraction of the stems of P. tricuspidata by anion exchange chromatography and gel filtration. The antioxidant activities of four PTPs were investigated, exhibiting different antioxidant activities, in which PTP−4 performed noticeable, with strong superoxide radical activity (comparable to BHT), high DPPH radical activity (78.53% at 1250 μg/mL), moderate hydroxyl radical scavenging activity and reducing power activity. Furthermore, the chemical structure of PTP−4 was measured by FT-IR, GC, ¹H and ¹³C NMR spectra, indicating its mainly composition of the arabinose, xylose, galactose, glucuronic acid, and mannose. Thus, the stems of P. tricuspidata could be used as a potential source for natural antioxidant.