Resumo

FLORES HERNANDEZ, Arnoldo et al. Oil production and extraction of marjoram under cultivation at the Comarca Lagunera region. Rev. mex. de cienc. forestales [online]. 2011, vol.2, n.3, pp.113-120. ISSN 2007-1132.

Mexico is the main exporter of marjoram (orégano) of the world. In this study were assessed oil production and extraction (cooking and water-steam dragging) of Lippia graveolens cultivated plants under three humidity degrees (high: 3/3 C. C; medium: 2/3 C. C and the proof (wild). Six samples were taken from three blocks for each humidity treatment to which were measured height, cover, number of branches, wet weight, dry weight and useful dry matter (product). Results showed high significant differences of the variables of the cultivated plants, compared to the wild ones. However, the useful vegetal part of the samples that received watering were affected by height, cover and number of branches. Also, with the 2/3 humidity treatment of field capacity, the best result was obtained. In regard to the oil extraction method, the water-steam was significantly higher in oil yield (mL) and per cent compared to the traditional cooking method. Cultivated marjoram had more foliage production and useful part, as well as oil content in contrast with the wild samples.

Palavras-chave : Biomass; non-timber species; vegetal oil extraction; "oregano"; cultivation of wild plants; arid- lands vegetation.

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