Improved liquid-chromatography tandem mass spectrometry method for the determination of the bioactive dipeptides, carnosine and anserine: Application to analysis in chicken broth

► An improved method has been developed to determine dipeptides in chicken broth. ► Method based on ultra-performance liquid chromatography tandem mass spectrometry. ► Analysis time of 10 min, including sample pre-treatment and chromatographic analysis. ► Allowing quantify polar compounds by mass spectrometry in samples containing salt.