Chemical Composition and Biological Activity of the Essential Oils of Senecio aegyptius var. discoideus Boiss.

Abstract

The essential oil of Senecio aegyptius var. discoideus flowers, leaves, stems and roots were isolated by hydrodistillation. Analysis of the oils by capillary GLC and GLC-mass spectrometry were performed and 34 out of 37 compounds were identified. The main component was isolated and characterized as 1,10-epoxyfuranoeremophilane using a combination of GLC, GLC-MS, and NMR analyses. The oils of flowers, leaves and stems were rich in monoterpene hydrocarbons while the root oil mainly contains furanoeremophilanes. Flower and leaf volatile oils showed significant level of antifungal activity against C. albicans, moderate effect against Gram positive bacteria, however, it has weak activity against Gram negative bacteria. The isolated sesquiterpene (1,10-epoxyfuranoeremophilane) exhibited substantial inhibitory activity against Gram negative bacteria.

Antimicrobial and antioxidant activities ofSeneciospecies growing in the Black Sea region, Turkey

“…There are many reports about antioxidant and antimicrobial properties of plants (Sagdic, 2003;Sagdic et al, 2006). Recent studies indicated that several species of Senecio exhibit antimicrobial, antifungal and cytotoxic activities (Barbetti et al, 1986;Pérez et al, 1999;Kiprono et al, 2000;El-Shazly et al, 2002;Garcia et al, 2003;Loizzo et al, 2004Loizzo et al, , 2006.…”

Antibacterial and antifungal activity of Senecio inaequidens DC. and Senecio vulgaris L.

“…Senecio species were used in folk medicine in the treatment of wounds and as antiemetic, anti-inflammatory and vasodilator preparations (Rose, 1972;Bautista Peris et al, 1991). Recent studies indicated antibacterial and antifungal activities of compounds from Senecio species (Pérez et al, 1999;Kiprono et al, 2000;El-Shazly et al, 2002).…”

Chemical Constituents and Biological Activities of Galinsoga parvifl ora Cav. (Asteraceae) from Egypt

“…Identifi cation of the compounds was based on their mass spectra, retention indices, and comparison with published data (Adams, 2007;El-Shazly and Hussein, 2004;El-Shazly et al, 2002. On the other hand, we could not fi nd any traces of (Z)-3-hexen-1-ol, β-caryophyllene, and 6-demethoxy-ageratochrome which have been reported as major compounds in the essential oil of leaves from G. parvifl ora growing in Colombia (Pino et al, 2010).…”