食品科学 ›› 2011, Vol. 32 ›› Issue (22): 260-263.doi: 10.7506/spkx1002-6630-201122055

• 分析检测 • 上一篇    下一篇

高效液相色谱示差折光法检测紫胶桐酸

刘世平1,2,张 弘2,周梅村1,*,郑 华2,李 凯1,2,郭元亨2   

  1. 1.昆明理工大学化学工程学院 2.中国林业科学研究院资源昆虫研究所
  • 出版日期:2011-11-25 发布日期:2011-11-11
  • 基金资助:
    国家林业局“948”项目(2008-4-78);科技部农业科技成果转化资金项目(2010GB24320619); 国家林业局林业科技成果推广项目([2010]11)

Determination of Aleuritic Acid by High Performance Liquid Chromatography with Differential Refractive Index Detector

LIU Shi-ping1,2,ZHANG Hong2,ZHOU Mei-cun1,*,ZHENG Hua2,LI Kai1,2,GUO Yuan-heng2   

  1. (1. Faculty of Chemical Engineering, Kunming University of Science and Technology, Kunming 650224, China; 2. Research Institute of Resources Insects, Chinese Academy of Forestry, Kunming 650224, China)
  • Online:2011-11-25 Published:2011-11-11

摘要: 采用高效液相色谱(high performance liquid chromatography,HPLC)法,利用示差折光检测器(refractive index detector ,RID)测定紫胶桐酸含量。色谱柱为Agilent ZORBAX SB-C18(4.6mm×250mm,5μm),以V(甲醇):V(水)=60:40(0.1%三氟乙酸)作为流动相,流速1mL/min,进样体积10μL,柱温30℃。结果表明:紫胶桐酸在0.01~1.0mg/mL呈良好的线性关系,R2=0.9994;最低检测限为0.008mg/mL;精密度RSD值为0.86%;平均加标回收率为100.23%,RSD值为0.65%。采用HPLC-RID测定紫胶桐酸的含量,操作简单,结果准确,稳定性和可信度好。

关键词: 紫胶桐酸, 高效液相色谱(HPLC), 示差折光检测器(RID)

Abstract: In this paper, we present a high performance liquid chromatography (HPLC) with differential refractive index detector (RID) method to determine aleuritic acid. Ten mL of the analyte was chromatographically separated on an Agilent ZORBAX SB-C18 column (4.6 mm × 250 mm, 5μm) using a mobile phase consisting of a mixture of methanol and water (60:40, containing 0.1% trifluoroacetic acid) at a flow rate of 1 mL/min. The column temperature was set as 30 ℃. Aleuritic acid showed a good linear relationship over the concentration range of 0.01-1.0 mg/mL with a correlation coefficient of 0.9994. The limit of detection was 0.008 mg/mL. The precision RSD was 0.86% (n =9). The average spike recovery rate was 100.23% with a RSD of 0.65% (n = 9). The method was easy to operate, simple, accurate, stable and reliable.

Key words: aleuritic acid, high performance liquid chromatography (HPLC), differential refractive index detector (RID)

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