An high-performance liquid chromatographic method for the simultaneous analysis of acetylcarnitine taurinate, carnosine, asparagine and potassium aspartate and for the analysis of phosphoserine in alimentary supplements.

Highlights: [•] Simultaneous analysis of AC-Tau, Carn, Asn and Asp is reported for the first time. [•] Derivatization studies in placebo excluded any interference of complex matrices. [•] The high stability of the adducts allowed automated analyses at company level. [•] The amino acid analysis was carried out without preliminary extraction procedures. [Copyright &y& Elsevier]