化学
阿拉伯糖
抗氧化剂
DPPH
多糖
大小排阻色谱法
木糖
超氧化物
半乳糖
羟基自由基
葡萄糖醛酸
甘露糖
化学结构
萃取(化学)
色谱法
有机化学
酶
发酵
作者
Xiaoxia Liang,Yingying Gao,Wenbo Fei,Yuanfeng Zou,Min He,Zhongqiong Yin,Zhixiang Yuan,Zhongqiong Yin,Wei Zhang
标识
DOI:10.1016/j.ijbiomac.2018.07.131
摘要
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.
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