20.500.12556/RUL-182929 Characterisation and authenticity assessment of rosemary and laurel essential oils using compound specific isotope analysis The chemical composition, antioxidant activity and authenticity of commercially available rosemary (REO) and laurel (LEO) essential oils from the Slovenian market were investigated. In both EOs, 1,8-cineole was identified as the most abundant compound. It was determined that VOCs in lower concentrations contribute more to antioxidant activity compared to more abundant compounds. Key isotopic markers for adulteration detection were determined using compound-specific isotope analysis (CSIA). The sensitivity of the developed method was evaluated, demonstrating the best sensitivity for linalool in REO and for sample contains more than 19% of linalool (47% for α α-pinene in LEO, which means if the -pinene) synthetic fraction, it is almost certain (95% probability) that falsification will be suspected. When analysing commercial EOs declared as natural, the δ 13 C VPDB values indicated possible falsification of several VOCs in EOs. The developed methodology has shown great promise in the quality control of EOs, verifying labelling claims and detecting adulteration. GC-C-IRMS rosemary laurel essential oil authenticity antioxidant activity eterična olja rožmarin lovor potvorbe pristnost antioksidativna aktivnost true false true Angleški jezik Slovenski jezik Članek v reviji 2026-05-28 13:35:47 2026-05-28 13:35:53 2026-05-29 04:37:02 0000-00-00 00:00:00 2026 0 0 11 str. art. 149404 Vol. 517 Jul. 2026 0000-00-00 Zaloznikova Objavljeno NiDoloceno 0000-00-00 0000-00-00 0000-00-00 665.52/.54:543.61 0308-8146 10.1016/j.foodchem.2026.149404 278281219 RAZ_Simic_Pavle_2026.pdf RAZ_Simic_Pavle_2026.pdf 1 28F18A301F8B602376AF344F6C1E20C7 7669a3835b2226acdbb89166e61c923879d521d362f84c419e311051931bf122 54f98a57-5a89-11f1-b0ab-0050569b8976 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=234612 https://www.sciencedirect.com/science/article/pii/S0308814626015621?via%3Dihub 1 0b674141-5a89-11f1-b0ab-0050569b8976 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=234611 Biotehniška fakulteta 0 0 0