Evaluation of the essential oil samples that are sold as "Eucalyptus oil" on the market in Turkiye in terms of European Pharmacopoeia 10.0 criteria

Eucalyptus oil is prominent for its health-promoting and cosmetic utilizations. Thus, pure eucalyptus oil containing products are abundant in Turkish market. Natural products may be regarded as safe however, it is only accurate if the accessible products meet the international quality criteria. Turkiye is legally bounded to European Pharmacopoeia (EP) and there are various monographs for herbal products, including eucalyptus oil. Hence, for this study 16 eucalyptus oil samples obtained from different sources were investigated for their compliance with latest version of EP. Appearance, fatty oils and resinified essential oils, relative density, refractive index, optical rotation and aldehydes properties of the samples evaluated. For superior insight for chemical ingredients of the products, Thin Layer Chromatography (TLC) and Gas Chromatography-Mass Spectrometry (GC-MS) analysis were employed. Results denoted that all samples obtained from Turkish Market incompatible with the standards of EP. In view of these data, it was shown that enriched regulation mechanisms are required. When the variance between the sources of purchase evaluated, pharmacies are more accurate sources for purchasing such products nonetheless developments are yet needed.