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The essential oil of Origanum elongatum is known by numerous biological activities, which are linked to its chemical composition. The aim of this study was to evaluate the effect of hydro-distillat...

Aims : This study was designed to evaluate the antimicrobial activity of five essential oils (EOs) extracted from the aerial parts (leaves and flowering tops) of three species growing in the north of Morocco: Origanum elongatum , Thymus capitatus and Mentha suaveolens . Study Design: Chemical analysis of EOs, antibacterial and antiviral activities of EOs. Place and Duration of Study : Department of Biology (Faculty of Sciences), Institute of Agrochemistry and Food Technology (IATA), between September 2009 and December 2009. Methodology : The EO constituents were extracted by hydrodistillation and analysed by

En este trabajo se aborda la posible actividad larvicida in vivo del aceite esencial de Origanum elongatum, recolectado en Marruecos, frente a las larvas L3 de Anisakis pegreffii, que parasitan distintas especies marinas. Los resultados obtenidos son demostrativos del interés potencial de este aceite esencial como preventivo de la infección por Anisakis, tras ingestión del pescado parasitado., Anisakiasis is an emerging zoonotic disease caused by species of the genus Anisakis. In humans, this parasite is manifested by digestive symptoms. In the virtual absence of effective treatments against this infection, our working group has initiated a series of investigations aimed at finding natural products such as essential oils and their major components, which might be of interest in the treatment of the infectious form of these zoonoses. OBJECTIVE: Establishment of the possible in vivo activity of essential oil of O. elongatum, against L3 larva of Anisakis pegreffii. METHODOLOGY: For the study in vivo, parasites were isolated from the host Scomber japonicus (mackerel) and Trachurus trachurus (horse mackerel). The experimental animals (female Wistar rats) were infected with 6 Anisakis larva by gastric catheter, this technique was used also for the administration of O. elongatum (46.9 mg / 0.5 ml of olive oil), according to the following guidelines: infection and joint treatment and sacrifice at 4 hours. Parallel to this, a control test was performed, administering 0.5 ml olive oil together with six larvae of the parasite to a group of animals. The identification of the larvae was carried out using molecular techniques (PCR-RFLP). The identification of the main components of essential oil was performed by GC-MS., Trabajo financiado por el proyecto: P07-CVI-03249