食品科学 ›› 2008, Vol. 29 ›› Issue (9): 344-347.

• 工艺技术 • 上一篇    下一篇

天麻水溶性多糖分离纯化及理化性质研究

 明建, 桂明英, 孙亚男, 陈宗道, 赵国华   

  1. 西南大学食品科学学院; 昆明食用菌研究所;
  • 出版日期:2008-09-15 发布日期:2011-12-08

Study on Isolation and Physicochemical Characteristics of Water-soluble Polysaccharides from Gastrodia elata Blume

 MING  Jian, GUI  Ming-Ying, SUN  Ya-Nan, CHEN  Zong-Dao, ZHAO  Guo-Hua   

  1. 1. College of Food Science,Southwest University,Chongqing 400716,China; 2. Kunming Insitute of Edible Mushroom,Yunnan 650223,China
  • Online:2008-09-15 Published:2011-12-08

摘要: 本实验研究云南野生天麻(Gastrodia elata Blume)多糖的分离纯化及理化性质,实验结果表明,天麻粗多糖提取的最佳工艺条件为温度50℃、浸提时间3h、料液比1:10(W/V),乙醇浓度80%。在该条件下天麻粗多糖得率约为9.67%(干重)。天麻水溶性多糖(WPGB)经Sevag法脱蛋白、透析、乙醇沉淀、DEAE-52纤维素层析及Sephadex G-100层析分离纯化得到WPGB-A-H和WPGB-A-L,经高效液相色谱仪分析证明,WPGB-A-H为纯品,且得率为0.824%(干重),经过其理化性质鉴定表明,WPGB-A-H不含蛋白质、核酸、糖醛酸,为非淀粉类多糖,其平均分子质量为28840D。

关键词: 天麻, 活性多糖, 分离纯化, 理化性质

Abstract: The experimental results showed that the optimum extraction parameters of water-soluble polysaccharides from Gastrodia elata Blume(WPGB) are 50 ℃, extraction time 3 h, ratio of solid to liquid 1:10 and ethanol concentration 80%. Under the conditions, the recovery of WPGB is about 9.67% (dry weight). WPGB-A-H and WPGB-A-L were separated from deproteined WPGB with DEAE-52 column and Sephadex G-100 column, successively. The recovery of WPGB-A-H is up to 0.824% (dry weight) and its purity is high by high-performance liquid chromatography. The identification results of qualitative chemical reaction showed WPGB-A-H is a neutral polysaccharide. It dose not contain proteins, nucleic acids, uronic acid and starch. The average molecular weight of WPGB-A-H is proved to be 28,840 D.

Key words:  , Gastrodia elata Blume; polysaccharides; separation and purification; physicochemical properties;