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茶叶科学 ›› 2006, Vol. 26 ›› Issue (3): 195-198.doi: 10.13305/j.cnki.jts.2006.03.008

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采用GC法分析苦丁茶中可溶性单糖的研究

姜波, 关紫烽, 白松涛, 范圣第   

  1. 大连民族学院生命科学学院,辽宁 大连 116600
  • 收稿日期:2005-11-22 修回日期:2006-07-11 出版日期:2006-09-25 发布日期:2019-09-11
  • 作者简介:姜波(1960- ),女,高级工程师,硕士研究生在读,主要从事大型分析仪器在生物及食品分析方面的应用,生物体中有效成分的提取及结构鉴定等。E-mail:jb@dlnu.edu.cn

Determination of Soluble Monosaccharide in Zlex Lalifotia Thumb by GC

JIANG Bo, GUAN Zi-fng, BAI Song-tao, FAN Sheng-di   

  1. College of Life Science, Dalian Nationalities University, Dalian 116600, China
  • Received:2005-11-22 Revised:2006-07-11 Online:2006-09-25 Published:2019-09-11

摘要: 通过恒温水浸泡,干燥后利用二甲基亚砜(DMSO)作溶剂,六甲基二硅胺烷(TMDS)和三甲基氯硅烷(TMCS)作硅烷化试剂,将单糖衍生化为三甲基硅醚衍生物,以肌醇为内标物,用SE-30毛细管色谱柱,测定了苦丁茶中单糖的组成及含量。同时对比了二甲基酰胺及吡啶的溶解能力和N,O-双三甲基硅烷基乙酰基(BSA)的衍生化效果。方法的相对标准偏差小于8.0%,测得的苦丁茶中单糖含量分别为:葡萄糖0.355%,果糖0.440%,半乳糖4.000%,核糖0.035%,木糖0.150%,阿拉伯糖0.006%。

关键词: 苦丁茶, 可溶性单糖, 硅烷衍生化, 气相色谱, 内标法

Abstract: Monosaccharide in Kuding tea(Zelex lalifotia thumb) was obtained by dipping Kuding Tea in water bath with constant temperature, and then drying till the extract solution dryness. The dried monosaccharide was derived into trimethylsilyl derivative with hexamethyedisilane(HMDS) and trimethylchlorosilane(TMCS), and dimethyl sulfoxide(DMSO) used as solvent. The monosaccharide was determined by GC with SE-30 capillary column, and myoinositol used as internal standard. The dissolving ability of dimethylformamide and pyridine were compared and the derivative effect of N, O-bitrimethylsilylacetamide (BSA) was determined. The relative standard deviations were below 8.0%. The contents of monosaccharides in Kuding tea were as follows: glucose(0.355%), fructose(0.440%), galactose(4.000%), ribose(0.035%), xylose(0.150%), arabinose(0.006%).

Key words: Kuding Tea, Soluble Monosaccharide, Trimethylsilyl Derivatization, Gas Chromatography, Internal Standard Method

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