铁皮石斛多糖分级制备及理化活性研究  

Fractionated preparation and physicochemical properties of dendrobium officinale polysaccharide

作　　者：周金平 王自凡 卢永仲 朱国飞 张振 ZHOU Jin-ping;WANG Zi-fan;LU Yong-zhong;ZHU Guo-fei;ZHANG Zhen(School of Pharmacy Science,Guizhou University,Guiyang,Guizhou 550025,China;School of Liquor and Food Engineering,Guizhou University,Guiyang,Guizhou 550025,China;School of Food and Pharmaceutical Engineering,Guizhou Institute of Technology,Guiyang,Guizhou 550003,China;Guizhou Academy of Testing and Analysis,Guiyang,Guizhou 550000,China)

机构地区：[1]贵州大学药学院,贵州贵阳550025 [2]贵州大学酿酒与食品工程学院,贵州贵阳550025 [3]贵州理工学院食品药品制造工程学院,贵州贵阳550003 [4]贵州省分析测试研究院,贵州贵阳550000

出　　处：《日用化学品科学》2022年第8期17-21,共5页Detergent & Cosmetics

基　　金：贵州省特色优势植提特征指标挖掘及产业化高质量开发研究(黔科院C字[2021]4号);特殊医学用途配方食品技术研发创新平台建设(黔科合服企[2019]4001)。

摘　　要：通过闪式提取、分级醇沉制备分级多糖;通过红外、紫外等实验测定分级多糖理化性质;通过清除DPPH自由基、羟自由基实验评估分级产物抗氧化活性;通过抑制α-淀粉酶实验评估分级产物降血糖活性;通过旋转式黏度计测定不同温度下多糖黏度变化。结果表明,DOP60多糖含量较高、活性较好,可作为铁皮石斛应用于护肤、特医食品的二次开发工业原料。在高于50℃时,多糖黏度较低,变化平缓,易于过滤,解决了在生产中多糖水提液与石斛粉渣难以分离问题。The fractionated polysaccharide was prepared from dendrobium officinale by flash extraction and fractional alcohol precipitation;the physicochemical properties of the fractionated polysaccharide were determined by infrared and ultraviolet experiments;the antioxidant activity of the fractionated product was evaluated by scavenging DPPH free radicals and hydroxyl free radicals;the inhibition ofα-amylase was tested for evaluating the hypoglycemic activity.The viscosity change of polysaccharides at different temperatures was measured by rotational viscometer.The results show that DOP60 polysaccharide content is higher and the activity is better,which can be used as the secondary-development industrial raw material from dendrobium officinale for application in the fields of skin care and special medical food.When the temperature is higher than 50℃,the viscosity of polysaccharide is low,the change in viscosity is gentle,and it is easy to be filtered,which solves the difficulty in separation between polysaccharide aqueous extract and dendrobium residue powder in production.The method is simple and effective,and has the potential of industrial application.

关 键 词：铁皮石斛 分级多糖 闪式提取 护肤 

分 类 号：TQ658[化学工程—精细化工]