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Titre du document / Document title

Biochemical and biological studies on some tea trees (Melaleuca spp.) essential oils

Auteur(s) / Author(s)

FARAG R. S. (1) ; DAW Z. Y. (2) ; SIDKY MAHASSEN M. A. (3) ; MOHAMED SAFFAA H. (1) ;

Affiliation(s) du ou des auteurs / Author(s) Affiliation(s)

(1) Biochemistry Department, Faculty of Agriculture, Cairo University, EGYPTE
(2) Microbiology Department, Faculty of Agriculture, Cairo University, EGYPTE
(3) Medicinal and Aromatic Plant Research Department, Horticulture Research Institute, Agriculture Research Center, Dokky, Giza, EGYPTE

Résumé / Abstract

The present study was conducted to differentiate between the tea-trees species: Melaleuca armillaris, M. ericifolia, M leucadendron and M styphelioides and to envisage the effect of their leaf essential oils on the growth of some microorganisms. The fingerprint region in IR spectra (below 1500 cm-1) for each pair (M. styphelioides, M. ericifolia and M leucadendron, M. armillaris) of essential oils were identical. Therefore, this region can be used to differentiate between M. styphelioides or M. ericifolia and M leucadendron, M. armillaris plants. GLC analyses data show that M. ericifolia contains 98.5% ethyl eugenol. 1,8-cineole (34.3%) and terpinene-4-ol (39.1%) are characteristic components of M armillaris. Melaleuca leucadendron is characterized by the presence of a high content of α-terpinol (34.7%) while M styphelioides contains caryophyllene (50%) and methyl eugenol (26.6%) in remarkable levels. Preliminary screening of the antimicrobial activity of M. styphelioides, M. ericifolia, M. leucadendron and M armillaris essential oils against some pathogenic and spoilage microorganisms representing Gram-negative bacteria, Gram-positive bacteria and yeasts were performed using a filter paper disc agar method. The results demonstrate that the degree of the microbial inhibition is largely dependent on the tea-tree oil species. The antifungal activity of tea-tree species essential oils against Aspergillus niger, A. parasiticus, Trichoderma viridae and Penicillium patolum growth also demonstrates differing degrees of inhibition. Additionally, the antifungal activity increases with increasing oil concentration.

Revue / Journal Title

Advances in food sciences    ISSN  1431-7737 

Source / Source

1998, vol. 20, no5-6, pp. 153-162 (22 ref.)

Langue / Language

Anglais
Revue : Allemand

Editeur / Publisher

Parlar Scientific Publications, Freising, ALLEMAGNE  (1996) (Revue)

Mots-clés anglais / English Keywords

Pharmacognosy

;

Interspecific comparison

;

Essential oil

;

Plant leaf

;

Biological activity

;

Antibacterial agent

;

Antifungal agent

;

In vitro

;

Medicinal plant

;

Antimicrobial agent

;

Myrtaceae

;

Dicotyledones

;

Angiospermae

;

Spermatophyta

;

Mots-clés français / French Keywords

Pharmacognosie

;

Comparaison interspécifique

;

Huile essentielle

;

Feuille végétal

;

Activité biologique

;

Antibactérien

;

Antifongique

;

In vitro

;

Plante médicinale

;

Melaleuca leucadendron

;

Melaleuca ericifolia

;

Maleleuca styphelioides

;

Maleleuca armillaris

;

Antimicrobien

;

Myrtaceae

;

Dicotyledones

;

Angiospermae

;

Spermatophyta

;

Mots-clés espagnols / Spanish Keywords

Farmacognosia

;

Comparación interespecífica

;

Aceite esencial

;

Hoja vegetal

;

Actividad biológica

;

Antibacteriano

;

Antifúngico

;

In vitro

;

Planta medicinal

;

Antimicrobiano

;

Myrtaceae

;

Dicotyledones

;

Angiospermae

;

Spermatophyta

;

Localisation / Location

INIST-CNRS, Cote INIST : 15792, 35400007027122.0030

Nº notice refdoc (ud4) : 2360855



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