Véronique Masotti

Antibacterial and antioxidant activities of Artemisia annua essential oil

The essential oil of Artemisia annua aerial parts, consisting of camphor (44%), germacrene D (16%), trans-pinocarveol (11%), beta-selinene (9%), beta-caryophyllene (9%) and artemisia ketone (3%), was screened for its antimicrobial activity. The essential oil remarkably inhibited the growth of tested Gram-positive bacteria Enterococcus hirae and both tested fungi. This oil has shown an antioxidant activity equivalent to 18% of the reference compound (alpha-tocopherol).

Compositional characteristics of the essential oil of Artemisia campestris var. glutinosa

Abstract The chemical variations of the essential oil from the aerial parts of Artemisia campestris var. glutinosa have been studied. Plant material has been harvested at each phenological status (vegetative, before anthesis, full flowering and seed-bearing). Analysis by GC and GC/MS of the essential oils have allowed to identify 51 components. The main components were γ-terpinene, capillene, 1-phenyl-2,4-pentadiyne, spathulenol, methyleugenol, p -cymene and β-pinene. Aromatic polyacetylens have been characterized for the first time in this species. Flowering involves an increase of these compounds in the essential oil.

Chemical Composition of the Leaf Oil of Psiadia altissima (Compositeae)

ABSTRACT Fresh leaves of Psiadia altissima (DC) Benth. et Hook, from Madagascar were steam distilled to produce an oil in 0.5% yield. Fifty-two compounds of the oil were characterized using GC/MS and retention indices. The hydrocarbon fraction (83%) was composed of monoterpenes and sesquiterpenes, among which β-pinene (39.7%) was the main component of this oil. Of the 25 sesquiterpenoids detected, 14 have been identified, such as T-muurolol and β-eudesmol (2.2%) and δ-cadinol (1.2%)

Composition of the Essential Oil of Xylopia aethiopica Dried Fruits from Benin

ABSTRACT Forty one compounds have been characterized by GC/MS and relative retention times in Xylopia aethiopica oil obtained by hydrodistillation of dried fruits collected in Benin (West Africa). Among them, sabinene (36.0%), 1,8-cineole (12.8%), linalool (3.9%), and terpinen-4-ol (7.0%) were the main components.

Heavy Metal and Arsenic Resistance of the Halophyte Atriplex halimus L. Along a Gradient of Contamination in a French Mediterranean Spray Zone

Elements uptake, histological distributions as well as mycorrhizal and physiological statuses of Atriplex halimus were determined on trace metal and metalloid polluted soils from the surrounding spray zones of a former lead smelter in the South-East coast of Marseille (France). Analyses of heavy metal and arsenic distribution in soil and plant organs showed that A. halimus tolerance is largely due to exclusion mechanisms. No specific heavy metal concentration in leaf or root tissues was observed. However, accumulation of salts (NaCl, KCl, Mg and Ca salts) on leaf bladders and peripheral tissues of roots was observed and may compete with metal element absorption. Occurrence of endomycorrhizal structures was detected in roots and may contribute to lower element transfer from root into the aerial parts of plants. The non-destructive measurements of leaf epidermal chlorophylls, flavonols and phenols showed a healthy state of the A. halimus population on the metal and metalloid polluted sites. Considering the low metal bioaccumulation and translocation factors along with a reduced metal stress diagnosis, A. halimus appeared as a good candidate for phytostabilization of trace metals and metalloids and notably arsenic in contaminated soils of the Mediterranean spray zone. However, its invasive potential has to be determined before an intensive in situ use.

Chemical Variation in the Oil of Artemisia verlotiorum Lamotte of French Origin Harvested at a Vegetative Stage and During Flowering

Abstract Artemisia verlotiorum essential oils, obtained by hydrodistillation of the aerial parts collected in southern France, were analyzed by GC and GC/MS. Among the identified constituents, α-thujone (55% and 44%), 1,8-cineole (5% and 15%), β-caryophyllene (13% and 7%) and β-thujone (5% and 11%), were the main components of the oils, from the vegetative and flowering plants, respectively. The proportions of the oxygenated compounds seemed to increase during flowering.

Chemical Compositon of Vepris elliotii Essential Oil

ABSTRACT Twenty-six compounds have been characterized by GC and GC/MS in Vepris elliotii oil obtained by steam distillation of fresh leaves collected from Madagascar. Among the constituents, α-pinene (4.3%), limonene (6.2%), terpinolene (49.7%) and (E)-anethol (23.5%) were the main components.