Knowledge Management System of Northwest Institute of Plateau Biology, CAS
LC-Fluorescence Detection Analysis of Amino Acids from Stellera chamaejasme L. Using 2-[2-(Dibenzocarbazole)-ethoxy] Ethyl Chloroformate as Labeling Reagent | |
Sun, Zhiwei ; You, Jinmao ; Song, Cuihua | |
2010-10-01 | |
发表期刊 | CHROMATOGRAPHIA
![]() ![]() |
摘要 | A pre-column derivatization method for the sensitive determination of amino acids using the tagging reagent 2-[2-(dibenzocarbazole)-ethoxy] ethyl chloroformate (DBCEC) followed by liquid chromatography with fluorescence detection has been developed. Identification of DBCEC-amino acids derivatives was by liquid chromatography-electrospray ionization mass spectrometry (LC-ESI-MS-MS). DBCEC can easily and quickly label amino acids, and derivatives are stable enough to be efficiently analyzed by LC. Separation of the derivatized amino acids had been optimized on Hypersil BDS C(18) column. A perfect baseline separation for 20 amino acid derivatives was achieved with a ternary gradient elution program. The chromophore of dibenzocarbazole group, which comprise a large rigid planar structure with p-pi conjugation system, resulted in a sensitive fluorescence detection for amino acid derivatives. The derivatized amino acids were detected with fluorescence detector with excitation maximum and emission maximum at 300 and 390 nm, respectively. Excellent linear responses were observed with coefficients of > 0.9993, and detection limits were in the range of 0.78-5.13 fmol (signal-to-noise ratio of 3). The mean accuracy ranged from 83.4 to 98.7% for fluorescence detection. The mean inter-day precision for all standards was < 4.2% of the expected concentration. Therefore, the proposed method was a highly sensitive and specific method for the quantitative analysis of amino acids from biological and natural environmental samples.; A pre-column derivatization method for the sensitive determination of amino acids using the tagging reagent 2-[2-(dibenzocarbazole)-ethoxy] ethyl chloroformate (DBCEC) followed by liquid chromatography with fluorescence detection has been developed. Identification of DBCEC-amino acids derivatives was by liquid chromatography-electrospray ionization mass spectrometry (LC-ESI-MS-MS). DBCEC can easily and quickly label amino acids, and derivatives are stable enough to be efficiently analyzed by LC. Separation of the derivatized amino acids had been optimized on Hypersil BDS C(18) column. A perfect baseline separation for 20 amino acid derivatives was achieved with a ternary gradient elution program. The chromophore of dibenzocarbazole group, which comprise a large rigid planar structure with p-pi conjugation system, resulted in a sensitive fluorescence detection for amino acid derivatives. The derivatized amino acids were detected with fluorescence detector with excitation maximum and emission maximum at 300 and 390 nm, respectively. Excellent linear responses were observed with coefficients of > 0.9993, and detection limits were in the range of 0.78-5.13 fmol (signal-to-noise ratio of 3). The mean accuracy ranged from 83.4 to 98.7% for fluorescence detection. The mean inter-day precision for all standards was < 4.2% of the expected concentration. Therefore, the proposed method was a highly sensitive and specific method for the quantitative analysis of amino acids from biological and natural environmental samples. |
文献类型 | 期刊论文 |
条目标识符 | http://210.75.249.4/handle/363003/20500 |
专题 | 中国科学院西北高原生物研究所 |
推荐引用方式 GB/T 7714 | Sun, Zhiwei,You, Jinmao,Song, Cuihua. LC-Fluorescence Detection Analysis of Amino Acids from Stellera chamaejasme L. Using 2-[2-(Dibenzocarbazole)-ethoxy] Ethyl Chloroformate as Labeling Reagent[J]. CHROMATOGRAPHIA, Sun, ZW; You, JM; Song, CH.LC-Fluorescence Detection Analysis of Amino Acids from Stellera chamaejasme L. Using 2-[2-(Dibenzocarbazole)-ethoxy] Ethyl Chloroformate as Labeling Reagent,CHROMATOGRAPHIA,2010,72(7-8 ):641-649,2010. |
APA | Sun, Zhiwei,You, Jinmao,&Song, Cuihua.(2010).LC-Fluorescence Detection Analysis of Amino Acids from Stellera chamaejasme L. Using 2-[2-(Dibenzocarbazole)-ethoxy] Ethyl Chloroformate as Labeling Reagent.CHROMATOGRAPHIA. |
MLA | Sun, Zhiwei,et al."LC-Fluorescence Detection Analysis of Amino Acids from Stellera chamaejasme L. Using 2-[2-(Dibenzocarbazole)-ethoxy] Ethyl Chloroformate as Labeling Reagent".CHROMATOGRAPHIA (2010). |
条目包含的文件 | 条目无相关文件。 |
除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。
修改评论