J4 ›› 2016, Vol. 1 ›› Issue (8): 20-23.

• 药学 • 上一篇    下一篇

云南省部分兰科植物中总氨基酸的含量测定

  

  1. (1.大理市环保局,云南大理671000;2.大理大学药学与化学学院,云南大理671000)
  • 收稿日期:2015-11-26 修回日期:2016-01-17 出版日期:2016-08-15 发布日期:2016-08-15
  • 作者简介:俞向东,工程师,主要从事大气和水质监测研究.
  • 基金资助:

    国家自然科学基金资助项目(81160393);云南省教育厅科学研究基金资助项目(2014Y399)

Determination of the Contents of Total Amino Acids in Parts of Orchidaceae Plants in Yunnan

  1. (1. Dali Municipal Environmental Protection Bureau,Dali,Yunnan 671000, China;2. College of Pharmacy and Chemistry,
    Dali University,Dali,Yunnan 671000, China)
  • Received:2015-11-26 Revised:2016-01-17 Online:2016-08-15 Published:2016-08-15

摘要:

目的:对云南省部分兰科植物中总氨基酸的提取条件进行优化,并测定其含量。方法:通过正交试验法优化最佳提取条
件,茚三酮显色法在568 nm处测定总氨基酸的含量。结果:最佳提取条件为加入20 mL 75%乙醇,回流提取3次,每次60 min。甘
氨酸对照品的浓度与吸光度在0.5~10 μg/mL范围内线性关系良好(r=0.999 8)。结论:茚三酮显色法操作简便,定量准确,适用于
兰科植物中总氨基酸的含量测定。

关键词: 兰科植物, 总氨基酸, 含量测定

Abstract:

Objective:To optimize the extraction technology of total amino acids from parts of Orchidaceae plants in Yunnan and
determine the content. Methods:The best extraction conditions were optimized by orthogonal test,and the content of total amino
acids was determined in 568 nm through Nihydrin colorimetry method. Results:The best extraction conditions were as follows: 20 mL
75% ethanol,3 times of reflux extraction and 60 min for each time. The concentration and the absorbance of the GLY show a good
linear correlation when changing from 0.5 μg/mL to 10 μg/mL,r = 0.999 8. Conclusion:Nihydrin colorimetry method is simple,
accurate,which can be used for the determination of total amino acids in Orchidaceae plant.

Key words: Orchidaceae plant, total amino acids, content determination

中图分类号: