Ozer, ZuleyhaCarikci, SemaYilmaz, HasibeKilic, TurgutDirmenci, TuncayGÖREN, AHMET CEYHAN2020-09-032020-09-032020-01-01Ozer Z., Carikci S., Yilmaz H., Kilic T., Dirmenci T., GÖREN A. C. , -Determination of secondary metabolites of Origanum vulgare subsp. hirtum and O. vulgare subsp. vulgare by LC-MS/MS-, JOURNAL OF CHEMICAL METROLOGY, cilt.14, ss.25-34, 2020http://hdl.handle.net/20.500.12645/18595Secondary metabolites of solvent extracts of Origanum vulgare subsp. hirtum and O. vulgare subsp. vulgare were determined using liquid chromatography-mass spectrometry (LC-MS/MS). Curcumin was used as an internal standard. Rosmarinic acid was determined as the main compound of studied extracts together with other phenolic acid derivatives. In LC-MS/MS analyses, relative standard deviations (RSD %) ranged between 0.11-9.47. The correlation values were found to be greater than 0.97 for each investigated analyte.enArticleWOS:00056066270000310.25135/jcm.33.20.04.1610DOI: https://doi.org/10.25135/jcm.33.20.04.1610trdizin