湖北农业科学 ›› 2019, Vol. 58 ›› Issue (11): 104-106.doi: 10.14088/j.cnki.issn0439-8114.2019.11.026

• 检测分析 • 上一篇    下一篇

陕南紫阳富硒茶有机硒提取方法的研究

张雪玲, 党妍妍, 邵黎明, 吴晴晴, 郭文久   

  1. 安康学院陕西省富硒食品监督中心/化学与化工学院,陕西 安康 725000
  • 收稿日期:2019-04-04 出版日期:2019-06-10 发布日期:2019-12-05
  • 作者简介:张雪玲(1965-),女,重庆人,副教授,主要从事天然有机化合物的提取与分离研究,(电话)0915-3261415(电子信箱)1600252238@qq.com。
  • 基金资助:
    陕西省教育厅省级大学生创新创业训练项目(2017sxjy029); 陕西省科技厅平台子项目(2018PT-31)

Study on extraction method of organic selenium from Ziyang selenium-enriched tea in southern Shaanxi

ZHANG Xue-ling, DANG Yan-yan, SHAO Li-ming, WU Qing-qing, YOU Wen-jiu   

  1. Shaanxi Selenium-rich Food Supervision Center/College of Chemistry and Chemical Engineering,Ankang University,Ankang 725000,Shaanxi,China
  • Received:2019-04-04 Online:2019-06-10 Published:2019-12-05

摘要: 研究建立一种从安康紫阳富硒茶中提取有机硒方法,利用相似相溶原理,选取乙醇、乙酸乙酯、环己烷对茶叶中的有机硒进行提取,得出在pH 7时,用乙醇回流法提取有机硒效果最好;通过L9(34)正交试验优化提取工艺,确定最佳提取条件为乙醇体积分数60%、回流温度70 ℃、固液比1∶19(g/mL)、加热回流时间2 h。

关键词: 有机硒, 提取, 原子荧光光谱法, 陕南紫阳富硒茶

Abstract: A method for extracting organic selenium from Ziyang selenium-rich tea in Ankang was established. Using the principle of similar solubility, ethanol, ethyl acetate and cyclohexane were selected to extract organic selenium from tea. It was concluded that when pH was 7, ethanol reflux method was the best method for extracting organic selenium. The extraction process was optimized by L9(34) orthogonal test, and the optimum extraction conditions were determined. The results showed that with 60% ethanol, 70 degree temperature, solid-liquid ratio of 1∶19(g/mL), heating reflux extraction time of 2 hours, organic selenium extraction in tea is the best.

Key words: organic selenium, extraction, atomic fluorescence spectrometry, Ziyang selenium-rich tea

中图分类号: