A method for the determination of arginine,lysine,serine,valine and other eleven amino acids was developed by MSTFA derivatization combined with gas chromatography-mass spectrometry(GC-MS),and fifteen amino acids reached the baseline separation.The arginine fermentation broth was purified by cationic exchange mixed-solid phase extraction(SPE), and then detected successfully by the developed method.Finally the 15N isotope abundance was calculated by characteristic fragment.
关键词
气相色谱-质谱联用(GC-MS)衍生化氨基酸15N标记氨基酸同位素丰度
Keywords
gas chromatography-mass spectrometry(GC-MS)derivatizationamino acids15N labeled amino acidsisotope abundance