March 2015

Assessment of antioxidant capacity of ethanolic extract of Portulaca oleracea leaves in vitro and in vivo

The purpose of the present study was to prepare ethanol extract of Portulaca oleracea L. leaves (PLE) that is rich in phenolic compounds and investigate there in vitro and in vivo antioxidative activities using ethanol to induce oxidative stress in the liver. This study includes two phases. The first phase includes assessment of antioxidant capacity in vitro using 1,1- Diphenyl-2-picrylhydrazyl (DPPH) assay and...

Author(s): Hefnawy Taha and Ali Osman

March 2015

Antimicrobial and efflux pumps inhibitory activities of Eucalyptus grandis essential oil against respiratory tract infectious bacteria

Essential oils obtained by hydrodistillation from the fresh and dry leaves of Eucalyptus grandis were analyzed by gas chromatography (GC) and gas chromatography mass spectrometry (GC-MS). The main components of the fresh leaf oil were α-pinene (29.6%), p-cymene (19.8%), 1,8-cineole (12.8%) and α-terpineol (6.4%). While, the dry leaf oil had 1,8-cineole (47.4%), limonene (13.3%), α-pinene (7.5%) and...

Author(s): Soyingbe Oluwagbemiga Sewanu, Myeni Cebile Bongekile, Osunsanmi Oluwagbemiga Folusho, Lawal Oladipupo Adejumobi, and Opoku Andrew Rowland  

March 2015

Determination of alkaloid compounds of Ricinus communis by using gas chromatography- mass spectroscopy (GC-MS)

In this study, the alkaloid compounds of Ricinus communis have been evaluated. The chemical compositions of the leaf ethanol extract of R. communis were investigated using gas chromatography-mass spectroscopy (GC-MS). GC-MS analysis of R. communis alkaloid leaf ethanol extract revealed the existence of the n-haxadecanoic acid, octadecanoic acid, 1-hexadecanol. 2-Methyl, gibb-3-ene-1. 10decarboxylic acid , 2,4a....

Author(s): Ameera Omran Hussein, Imad Hadi Hameed, Huda Jasim and Muhanned Abdulhasan Kareem