College of Life and Basic Sciences, Sichuan Agricultural University, Ya'an 625014, China.
Carbohydr Polym. 2013 Jun 5;95(1):195-9. doi: 10.1016/j.carbpol.2013.03.005. Epub 2013 Mar 13.
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.
三种多糖通过热水法从不同叶龄的鹰茶（毛豹皮樟变异地Litsea coreana var. lanuginosa）中提取。通过物理化学性质、傅里叶变换红外光谱（FTIR）和扫描电子显微镜（SEM）分析对其进行了初步的结构表征。还评估了它们对 2,2-二苯基-1-苦基肼（DPPH）、铁还原活性能力（FRAP）、羟基自由基和红细胞溶血的抗氧化活性。物理化学性质分析表明这三种多糖有显著差异。FTIR 光谱显示了这三种多糖的一般特征吸收峰。SEM 图像显示了不同多糖表面特征的显著差异。抗氧化活性测定表明三种多糖均具有明显的抗氧化活性，鹰茶初叶多糖的抗氧化活性高于其他两种多糖。根据目前的研究结果，鹰茶初叶多糖可能具有在食品工业中的应用潜力。
