Chemical composition and antibacterial activities of the essential oils isolated fromJuniperus thuriferaL. var. Africana

Abstract

This study describes the chemical composition and antibacterial activities of essential oils of Moroccan Juniperus thurifera L. var. Africana (Cupressaceae). The essential oil of dried leaves was isolated by hydrodistillation, vapohydrodistillation and microwaves. Sixty-four compounds in J. thurifera L. var. Africana oils were identified (79.9%, 92.4% and 98.4% of the oil, respectively). The most abundant compound in J. thurifera L. var. Africana oils is sabinene (38%, 36.2% and 39.4%). Antibacterial activities of J. thurifera essential oils was tested against bacteria Gram ( - ) and Gram (+). The oil is very active against all bacteria tested except Pseudomonas, which turned out to be very resistant.

Antifungal and Insecticidal Properties of Juniperus thurifera Leaves

“…The EO composition of J. thurifera leaves was previously reported [6][7][8][9][10]. Our finding are in accordance with those reported by Bahri et al [7] who worked on the J. thurifera collected from the same area (Oukaimden, 2700m of High Atlas Mountain of Morocco), however different proportions were registered. Some quantitative differences were noted with those from the Plateau of Matat (2200m of High Atlas Mountain) and the Islane forest (2000m of High Atlas Mountain), in which the sabinene (8.0-37.1%) and δ-cadinene (0.8-12.7%) contents were at high levels, while terpinen-4-ol (1.3-6.9%) and α-pinene (1.2-4.9%) were reported in smaller quantities [8].…”

Chemical Composition and Antibacterial Activity of Berries Essential Oil of Algerian Juniperus thurifera (Var. aurasiaca)

“…30,31 Generally, the yield and composition of the plant essential oils are influenced by several factors such as the method of extraction, plant part used for sampling, plant age, genetic makeup and environmental condition. 21 Therefore, the disagreement of our results with those previously reported on J. thurifera berries, 14 or leaves 10,11 could be explained by any of these factors. 10,18,21 Because of their complex bioactive composition, EOs interacts with several targets at the same time, thus preventing pathogens from acquiring resistance.…”

“…21 Therefore, the disagreement of our results with those previously reported on J. thurifera berries, 14 or leaves 10,11 could be explained by any of these factors. 10,18,21 Because of their complex bioactive composition, EOs interacts with several targets at the same time, thus preventing pathogens from acquiring resistance. 8 Therefore, the interaction between EO and antibiotics can produce three types of effects, namely: synergistic, additive or antagonistic effects.…”

“…africana). 10,13 Although the chemical composition and biological properties of J. thurifera EOs are well documented, [10][11][12][13][14][15][16][17][18][19][20][21][22] the chemical composition of EO extracted from J. thurifera berries var. hispanica has been reported in only one study.…”

Influence of Hydrophilic Polymers on theβFactor in Weibull Equation Applied to the Release Kinetics of a Biologically Active Complex ofAesculus hippocastanum

“…The horse chestnut (Aesculus hippocastanum) seed extract (extractum hippocastani, EH) is a biological source of escin and its derivatives. Various substances are included in the composition of EH: triterpenoid saponins, flavonoids, tannins, coumarins, vitamins C and B, essential oils, and other substances [1,2]. The extract is used in numerous preparations both internally and externally in patients suffering from chronic venous insufficiency and other inflammatory states of the veins, lower leg varicose veins, hemorrhoids, the treatment of burns, frostbite, skin inflammation, and epidermal abrasion [3].…”