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IRIAF expresses gratitude to ANIPAM for its collaboration in the supply of samples of EO of lavandin and authorization for using their analysis in this work, which was financed by IRIAF funds. CITA thanks to all farmers who voluntarily provided samples of EO of lavandin and authorized the use of their analysis in this study. Finally, ITACyL was funded by the project RTA2017-00031-C04-03.

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Essential oils of lavandin ( Lavandula x intermedia Emeric ex Loisel.) of Spain: A case study on clones Grosso and Super

Publicado en:Journal Of Applied Research On Medicinal And Aromatic Plants. 41 100550- - 2024-05-01 41(), DOI: 10.1016/j.jarmap.2024.100550

Autores: Ortiz de Elguea-Culebras, Gonzalo; Herraiz-Penalver, David; Prieto-Blanco, David; Cerro-Ibanez, Noemi; Sanchez-Vioque, Raill; Navarro-Rocha, Juliana; Angeles Sanz, Maria; Manzanera, M Carmen Asensio-S -Manzanera; Perez-Magarino, Silvia; Herrero, Baudilio; Melero-Bravo, Enrique

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Lavandin (Lavandula x intermedia Emeric ex Loisel.) is a sterile natural hybrid obtained from the crossing of lavender (L. angustifolia Mill.) and spike lavender (L. latifolia Medik.), and its cultivation has gained great importance in Spain. This work is aimed to study the chemical composition of essential oils (EOs) of lavandin from clones Grosso and Super cultivated in Spain. For this purpose, 215 EOs, obtained by steam distillation between 2016 and 2022 in agricultural farms located in 13 provinces of Spain, were analyzed by gas chromatography (GC) in three public R&D centers: the Regional Institute for Agrifood and Forestry Research and Development of Castilla-La Mancha (IRIAF), the Agrarian Technological Institute of Castilla y Le & oacute;n (ITACyL) and the Agrifood Research and Technology Center of Aragon (CITA). The chemical composition of the EO of lavandin showed great inter- and intra-varietal variability, with the main compounds being linalool, linalyl acetate, camphor and 1,8-cineole. The results showed that the contents of camphor and 1,8-cineole were higher in Grosso (7.2% vs 5.0% and 5.7% vs 3.8%, respectively), while those of linalool and linalyl acetate were higher in Super (35.8% vs 34.2% and 33.7% vs 27.2%). Among minor compounds, the lavandin 'Super' exhibited a higher content of beta-Z-ocimene and beta-E-ocimene, and a lower content of terpinen-4-ol compared to Grosso. Additionally, eleven compounds of lavandin Grosso were compared within the ranges established by ISO 8902:2009 standard, revealing that only 18% of the samples complied with it for all of these compounds. In this sense, the contents of alpha-terpineol, linalool and lavandulyl acetate were above the upper limit of the standard in respectively 49%, 23% and 21% of the samples. On the contrary, 36% of the samples for beta-Z-ocimene and 32% for linalyl acetate were below the range of this regulation. Unfortunately, these discrepancies with the ISO regulation exclude numerous EOs from the market despite their value in different sectors like perfumery, cosmetics, aromatherapy, phytosanitary or pharmacy. This work could serve as a guidance and/or reference study of Spanish essential oil of Grosso and Super clones for stakeholders involved in the lavandin EO market.

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