Composition and Antioxidant Activity of Vitex agnus-castus L. and Rosmarinus Officinalis L. Leaves Essential Oils Cultivated in Syria

Abstract

Medicinal plants contain a wide variety of chemicals which have very important roles in numerous applications including medicinal and those related with industry. Essential oils represent valuable sources for natural antioxidants. The aim of our study was to evaluate the chemical composition and antioxidant activity of the essential oils extracted from leaves of Syrian Vitex agnus-castus L. and Rosmarinus officinalis L., where is both essential oils were extracted and analyzed by gas chromatography-mass spectrometry. The antioxidant activities of these essential oils were determined by three different test systems, scavenging effect on 2,2-diphenyl-1-picrylhydrazyl radical, total phenolic and flavonoids contents. The main constituents found in Vitex agnus-castus L. essential oil were 1,8-Cineole (19.34%) and Sabinene (12.50%), while the major constituents in Rosmarinus officinalis L. essential oil were 1,8-Cineole (28.03%) and α-Pinene (14.70%). The results showed that 2,2-diphenyl-1-picrylhydrazyl radical scavenging and total phenolic contents of Vitex agnus-castus L. essential oil were higher than Rosmarinus officinalis L. essential oil. Total flavonoids contents were not detected in both essential oils. The Vitex agnus-castus L. and Rosmarinus officinalis L. essential oils are sources of natural antioxidants. Therefore, further work is needed to identify the compound(s) responsible for the antioxidant activity of Vitex agnus-castus L. and Rosmarinus officinalis L. essential oils.

Chitosan loaded with silver nanoparticles, CS‐AgNPs, using thymus syriacus, wild mint, and rosemary essential oil extracts as reducing and capping agents

“…The SEM analysis confirming the presence of 83% AgNPs with the size of 62 nm for both colloidal and film samples. We believe that phenols and terpenoids components in essential oils, as reported by Faten Al Saka et al, were mainly responsible for the reduction of silver ions. Essential oils appear to be an environmentally friendly and low cost candidate as reductant for synthesizing AgNPs.…”

Phytochemical Profile, In Vitro Bioactivity Evaluation, In Silico Molecular Docking and ADMET Study of Essential Oils of Three Vitex Species Grown in Tarai Region of Uttarakhand

“…However, in the present study such compounds were not detected, and the amount detected for α-thujene was also negligible (0.2%). The second major compound detected in VTO, 5-(1-isopropenyl-4,5-dimethylbicyclo[4.3.0]nonan-5-yl)-3-methyl-2-pentenolacetate (11.7%), has also been found in other Vitex species such as V. agnus castus and V. negundo [ 51 , 60 ]. The noticeable diterpenes identified in VTO, 13-epi-manoyl oxide (5.6%), and 16-oxo-cleroda-3,13(14)-(e)-dien-15-oic acid (2.8%) are also being detected for the first time in V. trifolia oil.…”

Vitex agnus-castus L.: Chemical characterization, enantiomeric distribution, and antibacterial efficacy of the essential oil from north-central Nigeria

“…The A. agnus-castus leaf essential oil was screened for antibacterial activity using the microbroth dilution assay as previously reported [10] [19], Varcin [39], Habbab [23], Senatore [36], Neves [31], Stojkovic [37], Khairi [26], Goncalves [17], Hamid [24], Marongiu [30], Kustrak [29], Duymus [20], Ulukanli [38], Al Saka [16], Inal [25], Ouali [33], Rezaei [34], Khalilzadeh [27], Farokhzad [21], Novak [32], Zoghbi [40], Abou-Zied [15], Khedri [28], Ricarte [35], Galletti [22], Bakr [18].…”