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Simultaneous Amino Acid Analysis Based on 19F NMR Using a Modified OPA-Derivatization Method.
Analytical Chemistry ( IF 6.7 ) Pub Date : 2019-12-31 , DOI: 10.1021/acs.analchem.9b05311 Takashi Sakamoto 1 , Zhiyong Qiu 2 , Miyu Inagaki 1 , Kenzo Fujimoto 2
Analytical Chemistry ( IF 6.7 ) Pub Date : 2019-12-31 , DOI: 10.1021/acs.analchem.9b05311 Takashi Sakamoto 1 , Zhiyong Qiu 2 , Miyu Inagaki 1 , Kenzo Fujimoto 2
Affiliation
To provide alternative methods of analyzing amino acids without liquid chromatography, 19F NMR-based simultaneous and individual detection methods for amino acids using o-phthalaldehyde (OPA)-based 19F labeling have been developed. Since the chemical shifts of almost all 19F-labeled amino acids differ from each other, and they can be discriminated on the 19F NMR spectrum, simultaneous detection of amino acids has been successfully demonstrated. The discrimination pattern of the peak identical to that of the 19F-labeled amino acids was largely dependent on the chemical structure of the thiols having 19F nuclei, strongly suggesting that there is a large potential for clearer discrimination of amino acids by optimizing the thiol structure and/or combined use of thiols.
中文翻译:
使用改良的OPA衍生化方法基于19F NMR进行同时氨基酸分析。
为了提供无需液相色谱即可分析氨基酸的替代方法,已经开发了基于19F NMR的同时基于邻苯二甲醛(OPA)的19F标记的氨基酸同时检测方法和单独检测方法。由于几乎所有19F标记氨基酸的化学位移都互不相同,并且可以在19F NMR光谱上进行区分,因此已成功证明了氨基酸的同时检测。与19F标记的氨基酸相同的峰的鉴别模式在很大程度上取决于具有19F核的硫醇的化学结构,强烈暗示通过优化硫醇结构和/或硫醇的组合使用。
更新日期:2020-01-01
中文翻译:
使用改良的OPA衍生化方法基于19F NMR进行同时氨基酸分析。
为了提供无需液相色谱即可分析氨基酸的替代方法,已经开发了基于19F NMR的同时基于邻苯二甲醛(OPA)的19F标记的氨基酸同时检测方法和单独检测方法。由于几乎所有19F标记氨基酸的化学位移都互不相同,并且可以在19F NMR光谱上进行区分,因此已成功证明了氨基酸的同时检测。与19F标记的氨基酸相同的峰的鉴别模式在很大程度上取决于具有19F核的硫醇的化学结构,强烈暗示通过优化硫醇结构和/或硫醇的组合使用。