Novel high-throughput and widely-targeted liquid chromatography-time of flight mass spectrometry method for d-amino acids in foods

J Biosci Bioeng. 2017 Jan;123(1):126-133. doi: 10.1016/j.jbiosc.2016.07.009. Epub 2016 Sep 17.


Recently, the demand for d-amino acid profiling has been drastically increasing because the significance of d-amino acid in various biological events is suggested. However, the present methodologies for d-amino acid profiling are still unsatisfactory. Therefore, a highly sensitive, robust, high-throughput, and user-friendly method for d-amino acid profiling must be developed. In this paper, we developed a novel method for d-amino acid profiling using a combination of a chiral column and time of flight mass spectrometry (TOFMS). To our knowledge, our approach has the best performance for d-amino acid analysis that includes the shortest analytical time (within 10 min), the highest enantioseparability without derivatization, and the largest coverage for analytical targets (more than one hundred targets including non-proteinogenic amino acids and amines). Thus, our novel profiling method will be instrumental in advancing the d-amino acid research in the future.

Keywords: Chiral amino acids; Enantioseparation; Liquid chromatography–time of flight mass spectrometry; Underivatized amino acids; d-Amino acids.

MeSH terms

  • Amines / analysis
  • Amino Acids / analysis*
  • Amino Acids / chemistry
  • Chromatography, Liquid / methods*
  • Food Analysis / methods*
  • Food*
  • Mass Spectrometry / methods*
  • Stereoisomerism
  • Time Factors


  • Amines
  • Amino Acids