%0 Journal Article
%T Huiles essentielles, utilisations et activit¨¦s biologiques. Application ¨¤ deux plantes aromatiques
%A HADDOUCHI Farah
%A BENMANSOUR Abdelhafid
%J Technologies de Laboratoire
%D 2008
%I TECHNOP
%X The plants are able to produce much diversified natural compounds. Indeed, in addition to the primary metabolites, they accumulate also secondary metabolites, among which essential oils which are largely used by peoples in fields as different as pharmacology or agroalimentary.The essential oils of Laurus nobilis L (Laurel) and Thymus fontanesii (Thyme) originating in the Algerian west, are were the subject of a microbiological study according to their conservation. The extraction of essential oils of the two plants was carried out by water steam entrainment. The obtained yields were 1.2 and 2%, respectively, and are interesting for an industrial exploitation.The study of the activity of these essential oils on bacterial and fungi strains was carried out by Vincent method (Aromatogramme). The antimicrobial action of Laurier essential oil was by far less important than those of Thyme, who is characterized by an bactericidal action against gram (-) bacteria and bacteriostatic against gram (+) bacteria.The follow-up of the activity of these essential oils according to their conservation shows that time, temperature and light have a little effect on their microbial effectiveness, compared to freshly extracted essential oils. Also, this activity depends on the nature of oil and the germ him even.
%K Thymus fontanesii
%K Laurus nobilis
%K essential oils
%K antimicrobial activity
%U http://www.technolabo.ma/TL8-3.pdf