Abstract
D-Amino acids have recently attracted much attention in various research fields including medical, clinical, and food industry due to their important biological functions that differ from L-amino acid. Most chiral amino acid separation techniques require complicated derivatization procedures in order to achieve the desirable chromatographic behavior and detectability. This chapter describes a highly sensitive analytical method for the enantioseparation of chiral amino acids without any derivatization process using liquid chromatography-tandem mass spectrometry (LC-MS/MS). The method allows the simultaneous analysis of 18 D-amino acids with high sensitivity and reproducibility. Additionally, this chapter also focuses on the application of the method to real samples for the quantification of targeted amino acids.
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