Abstract
Laurus nobilis L. is an aromatic shrub or tree, Mediterranean element. The leaves are employed as a spice and for medicinal purposes. It is known by various names in Turkey, such as “defne, har and tehnel.” In this study, 15 different laurel leaf samples were purchased from 6 different cities in Turkey, diagnosed, and evaluated in terms of quality. The conditions of use and sale of these samples were evaluated. The essential oils obtained from the leaf samples were analyzed, and their physical properties such as density, refractive index, and optical rotation were determined. In the chemical composition of the oils, 1,8-cineole (41.2–64.4%), sabinene (1.5–15.9%), and α-terpinyl acetate (1.5–15%) have been found to be the major components. However, in one station, the presence of 1,8-cineole was not be determined. Laurel leaf drugs offered for sale in some provinces of Turkey were purchased from the market and their morphological characteristics and essential oil profiles were examined and evaluated in terms of public health. It was determined that these samples should be standardized and quality-controlled before being released to the market.
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GK and AK designed the research; GK, GÖ, and TÖ performed the major experiments; GK wrote the draft of the manuscript; GÖ and TÖ analyzed the data; AK, GÖ, and TÖ drafted and revised the manuscript. All authors read and approved the final manuscript.
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Kendir, G., Özek, G., Köroğlu, A. et al. The quality evaluation of the laurel leaf samples sold in the market under the name of “Defne Yaprağı”. Protoplasma 261, 303–316 (2024). https://doi.org/10.1007/s00709-023-01897-9
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DOI: https://doi.org/10.1007/s00709-023-01897-9