“…Detection and quantitative analyses of riboflavin, lumichrome and specific compounds used as markers (homogentisic acid, kynurenic acid, abscisic acid diastereomers, phenyllactic acid, caffeine, methyl syringate, benzoic acid, caffeic acid and p-coumaric acid) were carried out using an LC-DAD method as described by Tuberoso, Jerković , et al (2011). Briefly, a Varian system ProStar HPLC fitted with a ThermoSeparation diode array detector SpectroSystem UV 6000lp (ThermoSeparation, San Jose, CA, USA) set at 210, 280 and 360 nm was used.…”