Preliminary structural characterization and antioxidant activities of polysaccharides extracted from Hawk tea (Litsea coreana var. lanuginosa)
Preliminary structural characterization and antioxidant activities of polysaccharides extracted from Hawk tea (Litsea coreana var. lanuginosa)
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DOI：
10.1016/j.carbpol.2013.03.005
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发表时间：
2013-05-05
影响因子：
11.2
通讯作者：
Yuan, Ming
中科院分区：
文献类型：
--
作者：
Jia, Xuejing;Dong, Lihua;Yuan, Ming
采用热水法从不同叶龄的山楂茶（Litsea coreana var. lanuginosa）中提取三种多糖。通过理化性质、傅里叶变换红外光谱（FTIR）和扫描电镜（SEM）分析对其进行了初步的结构表征。对2,2-二苯基-1-吡啶酰肼（DPPH）、铁还原活性（FRAP）、羟基自由基和红细胞溶血的抗氧化活性进行了评价。理化性质分析表明，三种多糖存在显著差异。FTIR光谱显示了三种多糖的一般特征吸收峰。SEM图像显示不同多糖的表面特征有显著差异。抗氧化活性测定表明，3种多糖均具有明显的抗氧化活性，其中鹰原叶茶多糖的抗氧化活性高于其他2种多糖。根据目前的研究结果，从霍克初叶茶中提取的多糖在食品工业中具有潜在的应用价值。(c) 2013 Elsevier Ltd.版权所有。
Three polysaccharides were extracted from different leaf age Hawk teas (Litsea coreana var. lanuginosa) by hot water method. Preliminary structural characterization was conducted by physicochemical property, fourier transform infrared spectroscopy (FTIR), and scanning electron microscopy (SEM) analyses. Antioxidant activities against 2,2-diphenyl-1-picryl-hydrazyl (DPPH), ferric reducing activity power (FRAP), hydroxyl radical and erythrocyte hemolysis were also evaluated. The physicochemical property analysis indicated significant differences in the three polysaccharides. The FTIR spectra revealed the general characteristic absorption peaks of the three polysaccharides. The SEM images demonstrated significant differences in the surface features of the different polysaccharides. The antioxidant activity assays revealed the obvious antioxidant activities of three polysaccharides, and the polysaccharides of Hawk primary leaf tea exhibited higher antioxidant activities than the other two polysaccharides. With current findings, the polysaccharides from Hawk primary leaf tea may have potential applications in food industries. (c) 2013 Elsevier Ltd. All rights reserved.