食品科学 ›› 2006, Vol. 27 ›› Issue (7): 188-191.

• 分析检测 • 上一篇    下一篇

柱前衍生高效液相色谱法测定贝类产品中氨基酸含量

 陈发河, 吴光斌, 陶金华   

  1. 集美大学生物工程学院; 新疆农业大学食品科学学院
  • 出版日期:2006-07-15 发布日期:2011-09-29

Determination of Amino Acids in Shellfish Samples by High Performance Liquid Chromatography with Precolumn Derivatization

 CHEN  Fa-He, WU  Guang-Bin, TAO  Jin-Hua   

  1. 1.College of Bio-Engineering, Jimei University, Xiamen 361021, China; 2.College of Food Science, Xinjiang Agricultural University, Urumqi 830052, China
  • Online:2006-07-15 Published:2011-09-29

摘要: 采用柱前衍生高效液相色谱法,测定了3种贝类中天冬氨酸、赖氨酸、亮氨酸等17种氨基酸含量。衍生试剂为6-氨基喹啉基-N-羟基琥珀酰亚胺基甲酸酯(AQC),流动相为醋酸盐-磷酸盐缓冲溶液、乙睛、水,梯度洗脱。色谱柱为AccQ·Tag(Waters)氨基酸分析柱,紫外检测。结果显示,氨基酸浓度与峰面积呈良好的线性关系,线性范围10~80μmol/L,检出限为0.23μmol/L,相关系数均在0.998以上,相对标准偏差RSD在2.1%~4.8%之间,回收率在91.3%~113.2%之间。

关键词: 高效液相色谱法, 梯度洗脱, 柱前衍生, 氨基酸

Abstract: The technology of precolumn derivatization, along with high performance liquid chromatography gradient elution method was used in determining contents of amino acids in shellfish products. A high-efficiency AccQ·Tag(Waters) column, acetate-phosphate buffer, acetonitrile, and twice distilled water were prepared in gradient elution. AQC(6-aminoquinoly-N- hydroxysuccinimidy carbamate), a derivation reagent, was used for sample derivatization. Conditions of the test were: column temperature 37℃, wavelength 248nm and flow rate 1.0ml/min.The results showed that concentration of amino acids and peak areas achieve a nice linear relations (r is higher than 0.998) with linear range 10~80μmol/L. RSD is of 2.1%~4.8%. The limit of detection is 0.23μmol/L. The ranges of recovery of amino acids are from 91.3%~113.2%.

Key words: high performance liquid chromatography (HPLC), gradient elution, precolumn derivatization, amino acids