Palanisamy Marimuthu

Composition and Antibacterial Activity of The Essential Oil of Ammoides atlantica (Coss. et Dur.) Wolf

Abstract In Algerian traditional medicine, the aerial parts of Ammoides atlantica (Coss. et Dur.) Wolf. (Apiaceae) are reported to have a wide range of biological activities such as antibacterial and antidiarrheic activity. The in vitro antibacterial activity of the oil was evaluated by Disc diffusion method against several strains of bacteria, and this activity was shown to be very strong against most of the tested microorganisms, especially Escherichia coli ATCC 25922, Staphylococcus aureus ATCC 25923, and Enterococcus faecalis ATCC 29212. The MIC was also carry out and Bacillus subtilis ATCC 6633 (vegetative form) resulted to be the most sensitive microorganism with a MIC value inferior of 6.25 mg/L. The essential oil was analyzed by GC and GC/MS. The main components were thymol (53.2%), γ-terpinene (19.4%) and p-cymene (10.6%)

Cymbopogon citratus (DC) Stapf Volatile Oil from South - West, Nigeria

Abstract Chemical analysis of the volatile oil of Cymbopogon citratus and its antibacterial effects were investigated. Chemical analysis of the C. citratus oil was determined using Gas Chromatograph-Mass Spectrometry technique. Out of 47 peaks (representing 97.36 % of the total oil), 37 constituents were identified representing 90.86 % of the total oil constituents. The major constituents were geranial (40.9 %), neral (29.7 %), myrcene (11.3 %), linalool (1.7 %) and geranylacetate (1.6 %). The oil was examined against six bacteria; Escherichia coli, Pseudomonas aeruginosa, Salmonella typhimurium, Klebsiella pneumonia, Serratia marcescens and Staphlycoccus aureus. It was found that C. citratus inhibited the growth of all tested microorganism.

Antiviral Activity of Essential Oils and Acetone Extracts of Medicinal Plants Against Papaya Ring Spot Virus

Abstract The volatile oils and acetone extracts of Anethum graveolens, Ppiper nigrum, Foeniculum vulgare, Cuminum cyminum, Carum copticum, Curcuma longa and Nigella sativa were tested for antiviral activity against papaya ring spot poty virus, using Chenopodium amaranticolor coste et Reyn, a local lesion host. The volatile oils of all the tested spices showed significant inhibitory activity (25–100%) at different dilutions. The volatile oils Cuminum cyminum, Carum copticum, Nigella sativa and Curcuma longa were found to be most effective among all the tested oils. Acetone extract of Carum copticum, Curcuma longa, Nigella sativa and Foeniculum vulgare showed better antiviral activity as compared to other tested extracts.