石斛多糖超高压提取工艺条件的优化  

Technique condition optimization for ultra high pressure extraction of dendrobium polysaccharide

作　　者：纵伟[1] 李翠翠[1] 

机构地区：[1]郑州轻工业学院食品与生物工程学院,河南郑州450002

出　　处：《郑州轻工业学院学报（自然科学版）》2012年第4期36-39,共4页Journal of Zhengzhou University of Light Industry:Natural Science

基　　金：国家自然科学基金项目(20876152)

摘　　要：采用超高压方法提取铁皮石斛中的多糖成分.在单因素实验的基础上,选取压力、时间、粉碎度和固液比(g∶mL)4个影响因素,以石斛多糖为指标,通过正交试验优化超高压方法提取石斛多糖的工艺条件.结果表明,将石斛粉碎到80目后,按固液比1∶20,采用300 MPa的压力提取6 min后,石斛多糖的得率达到19.27%.这表明超高压方法是一有效的提取石斛多糖的方法.Dendrobium candidum polysaccharide was extracted by ultra high pressure extraction （UHPE） method. Based on single factor experiments, orthogonal test was used to optimize the extraction conditions. Pressure ,holding time, size and ratio of solid to liquid （g： mL） were as 4 factors and the yield of dendrobi- um polysaccharide （DP） was as target. The optimum parameters for extracting DP were as follows ：pressure 300 MPa,holding time 6 min,size 80 mesh and ratio of solid to liquid （g： mL） 1： 20. The yield of DP was 19.27%. So UHPE was a suitable method for extraction of DP.

关 键 词：超高压提取 石斛多糖 工艺条件优化 

分 类 号：TS201.1[轻工技术与工程—食品科学]