Synthesis and Characterization of Seleno-Lilium davidii var. unicolor Salisb Polysaccharides
Synthesis and Characterization of Seleno-Lilium davidii var. unicolor Salisb Polysaccharides
复制标题
硒代百合的合成与表征
作者：
Zhang, Sheng-Tang;Wang, Yun-Pu;Liu, Zhong-Wang;Zhang, Ji;Wang, Feng-Xia;Yu Ping-Yang;Sun, Wen-Xiu
采用蒸馏水提取法从百合中提取粗多糖，经木瓜酶和野生法脱蛋白，得到单色百合粗多糖。在0.5%(v/v)的硝酸介质中，在70℃的条件下，用Y]O(OH)对低聚糖进行改性，反应时间为10h，用电感耦合等离子体原子发射光谱仪测定硒含量为0.784 mg/g。用紫外光谱、、激光拉曼光谱、差热分析和热重分析对产物进行了表征，结果表明产物中硒以Se=O的形式存在。
Lilium davidii var.unicolor Salisb raw polysaccharides were extracted from Lilium davidii var.unicolor Salisb by distilled water.The Lilium davidii var.unicolor Salisb polysaccharides were isolated through deproteinization by papain and savage.Seleno-Lilium davidii var.unicolor Salisb polysaccharides(Seleno-LP) were prepared by employing sodium selenite which hydrolyze generation of(HO)(Se)[ZJLX,S;Y]O(OH) to modify the LP under the catalysis of nitric acid-barium chloride.The favor reaction conditions were at 70℃ for 10 hours in the 0.5%(v/v) nitric acid.The selenic content of seleno-polysaccharide determined by ICP-AES was 0.784mg/g.The title products were characterized by Ultraviolet spectra、Laser-Raman spectrum and differential thermal analysis(DTA) and thermogravimetric analysis(TG).We come to the conclusion that Se exist in the form of Se=O in the title products.