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The components of five common commercial Egyptian essential oils; caraway, cumin, basil, thyme, and rose oils, were identified using gas chromatography/ mass spectrometry (GC/MS) and Kovats retentionExpand
Chemical Composition and Effect of Photo-Oxygenation on Biological Activities of Egyptian Commercial Anise and Fennel Essential Oils
Abstract Anise (Pimpinella anisum L.) and fennel (Foeniculum vulgaris M.) essential oils are commercially available in the local Egyptian market. They were analyzed by GC and GC-MS spectrometry. TheExpand
Isolation and Characterization of Polygonum equisetiforme Flavonoids and Their Acaricidal Activity against Tetranychus urticae Koch.
All the five isolated flavonoids showed acaricidal activity using leaf-dip technique against T. urticae Koch larvae in the following decreasing activity order; quercetin (LC50 =11.28 ppm), avicularin (46.72 ppm), isoquercitrin (63.77 ppm), myricitrin(169.66 ppm) and betmidin (188.11 ppm). Expand
Acaricidal activity and chemical constituents of Hyoscyamus muticus against Teteranychus urticae Koch.
On the basis of the toxicity index, certain fractions of extracts of the leaves and roots of Hyoscyamus muticus (Solanaceae) exhibited acaricidal activity against Teteranychus urticae Koch. TheExpand
Fatty Acid Pattern and Alkaloids of Echium Rauwolfii
The GC/MS analysis of hexane extract revealed the presence of palmitic acid as saturated fatty acid (1.05%), versus oleic acid (2.18%), linoleic acid (1.13%), cis-8,11,14-eicosatrienoic acid (2.12%)Expand
Acaricidal Activity of Ethulia conyzoides Extracts and Constituents against Tetranychus urticae Koch
The acaricidal potential of Ethulia conyzoides L. aerial parts extracts as well as its isolated compounds were investigated against larvae and adults of Tetranychus urticae Koch under laboratoryExpand
Photo-Oxygenated Derivatives from Eugenol
Photo-oxygenation reaction was performed on eugenol (1) (2methoxy-4-(2'-propenyl) phenol) in chloroform as a solvent and tetraphenyl porphrine (TPP) as singlet oxygen sensitizer. Irradiation of theExpand
Photo-Oxygenation of Trans Anethole
Photo-oxygenation of trans anethole (1), the main constituent of anise essential oil, using tetraphenylporphyrine (TPP) as a singlet oxygen sensitizer in chloroform gave 4-methoxybenzaldehydeExpand