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Article

Variations of Essential Oil Constituents in Oregano (Origanum vulgare subsp. viridulum (= O. heracleoticum) over Cultivation Cycles

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Istituto del CNR di Chimica Biomolecolare, Via P. Gaifami 18, 95126 Catania, Italy
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Consiglio per la Ricerca in Agricoltura e l’Analisi dell’Economia Agraria—Centro di Ricerca Difesa e Certificazione (CREA-DC), Strada Statale 113 km 245.500, 90011 Bagheria, Italy
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Dipartimento di Scienze Agrarie, Alimentari e Forestali—Università di Palermo, Viale delle Scienze Ed. 4 Ingr. L, 90128 Palermo, Italy
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Assessorato Regionale dell’Agricoltura, dello Sviluppo Rurale e della Pesca Mediterranea, Ispettorato dell’Agricoltura di Agrigento—U.O. S6.11, U.I.A. di Aragona, Via Scalo Caldare, 92021 Aragona, Italy
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Author to whom correspondence should be addressed.
Plants 2020, 9(9), 1174; https://doi.org/10.3390/plants9091174
Received: 19 August 2020 / Revised: 4 September 2020 / Accepted: 7 September 2020 / Published: 10 September 2020
(This article belongs to the Special Issue Plant Volatiles: A Goldmine Not Fully Explored)
Oregano is—probably—the most appreciated and widespread aromatic plant in Sicily. With the aim of evaluating the modifications of oregano’s essential oil composition over time, between 2013 and 2015 six weekly samplings of three different oregano plantations were carried out, from the beginning of flowering (early May) until the traditional harvest moment (end of June). Samples were hydrodistilled and the obtained essential oils (EOs) were evaluated by means of a combination of GC–FID and GC–MS. The Origanum plants under study were demonstrated to belong to the high-yielding, thymol-type biotypes, with thymol, γ-terpinene and p-cymene as three main components, among the total of about 50 of the evaluated EOs. In each location, EO yields were found to increase throughout survey dates. Significant variations were found in many EO components, both across years and throughout harvest dates within locations. The choice of the harvest moment was confirmed to be crucial in assessing quality aspects of oregano. View Full-Text
Keywords: oregano; essential oil; aromatic plants cultivation; Sicily; active metabolites; thymol; harvest time oregano; essential oil; aromatic plants cultivation; Sicily; active metabolites; thymol; harvest time
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MDPI and ACS Style

Napoli, E.; Giovino, A.; Carrubba, A.; How Yuen Siong, V.; Rinoldo, C.; Nina, O.; Ruberto, G. Variations of Essential Oil Constituents in Oregano (Origanum vulgare subsp. viridulum (= O. heracleoticum) over Cultivation Cycles. Plants 2020, 9, 1174. https://doi.org/10.3390/plants9091174

AMA Style

Napoli E, Giovino A, Carrubba A, How Yuen Siong V, Rinoldo C, Nina O, Ruberto G. Variations of Essential Oil Constituents in Oregano (Origanum vulgare subsp. viridulum (= O. heracleoticum) over Cultivation Cycles. Plants. 2020; 9(9):1174. https://doi.org/10.3390/plants9091174

Chicago/Turabian Style

Napoli, Edoardo, Antonio Giovino, Alessandra Carrubba, Vandana How Yuen Siong, Carmelo Rinoldo, Onofrio Nina, and Giuseppe Ruberto. 2020. "Variations of Essential Oil Constituents in Oregano (Origanum vulgare subsp. viridulum (= O. heracleoticum) over Cultivation Cycles" Plants 9, no. 9: 1174. https://doi.org/10.3390/plants9091174

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