性做久久久久久坡多野结衣-性做久久久久久久久浪潮-性欲影院-性影院-国产精品线路一线路二-国产精品兄妹在线观看麻豆

 

作者： Ji Zhang, Jian Wu, JunYu Liang, ZhongAi Hu, YunPu Wang , Shengtang Zhang

Gansu key laboratory of polymer materials, College of Life Science, Northwest Normal University, Lanzhou 730070, China

 

摘要：Artemisia seed polysaccharide (ASP) has great potential to be used as stabilizer, water retention agent and filmogen due to its high viscosity. This study reports analyses of its composition and molecule weight using gas chromatography (GC) and light scattering techniques. The molecular structure of the ASP at different concentrations was observed with atomic force microscopy (AFM). The relationship between structural and physical characteristics of ASP was also described in details. Our results showed that the ASP was composed of l-arabinose (l-Ara), d-xylose (d-Xyl), d-lyxose (d-Lyx), d-mannose (d-Man), d-glucose (d-Glu) and d-galactose (d-Gal). Its molecular weight was about 1.42 × 105. The ASP molecule had a linear backbone with branches. The network structure of ASP was formed through entanglement between the molecules of the polysaccharide.

 

關鍵詞：Artemisia seed polysaccharide; Atomic force microscopy; Images; Monosaccharide constituents; Molecular weight