食品科学

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基于分散液-液微萃取技术的石斛酚含量测定与分析

史 琤,蒋 蕾,马银海,涂渝娇*   

  1. 昆明学院化学科学与技术系,云南 昆明 650214
  • 出版日期:2015-08-25 发布日期:2015-08-17
  • 通讯作者: 涂渝娇
  • 基金资助:

    昆明学院科学研究项目(XJL12015)

Determination of Gigantol Based on Dispersive Liquid-Liquid Microextraction

SHI Cheng, JIANG Lei, MA Yinhai, TU Yujiao*   

  1. Department of Chemical Science and Technology, Kunming University, Kunming 650214, China
  • Online:2015-08-25 Published:2015-08-17
  • Contact: TU Yujiao

摘要:

建立分散液-液微萃取与高效液相色谱联用技术测定石斛酚的分析方法。通过对实验条件的筛选及优化,得到最佳条件:pH 3,辅以涡旋方式进行萃取,萃取溶剂为120 μL正戊酸、萃取时间1 min,分散剂为曲拉通X-114、用量80 μL。此方法进行萃取,检出限为2.625 μg/L,定量限为8.74 μg/L,线性范围为0.10~30.00 mg/L,萃取富集倍数平均值为28.02,萃取回收率平均值为1.01。将建立的分析方法应用于实际石斛样品的测定,结果表明该方法能对石斛中的石斛酚进行高效萃取与富集,方法快速简便。

关键词: 分散液-液微萃取, 酚酸类物质, 石斛酚, 石斛

Abstract:

A novel method for the determination of gigantol in Dendrobii Caulis by dispersive liquid-phase microextraction
(DLPME) coupled with high performance liquid chromatography (HPLC) was developed. The optimal DLPME conditions
were found to be extraction by vortexing for 1 min using 120 μL of valeric acid as the extraction solvent and 80 μL of Triton
X-114 as the dispersant at pH 3, yielding an average 28.02-fold enrichment and an average recovery of 1.01 for gigantol.
The proposed method exhibited a limit of detection (LOD) of 2.625 μg/L, a limit of quantification (LOQ) of 8.74 μg/L and a
linear range of 0.10–30.00 mg/L. The method was successfully applied to analyze real samples, and the results showed that it
was a rapid and efficient method for the extraction of gigantol in Dendrobii Caulis.

Key words: DLLME, phenolic components, gigantol, Dendrobii Caulis

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