Cowpea is major source of dietary protein in tropical region of the world and damage caused by Callosobruchus maculatus impact negatively on its economic and nutritional values. In Nigeria today, the use of synthetic insecticides has been the major means of protecting stored grains from insect pest infestation. The drawback associated with the use of insecticides has necessitated the search for...

Samples of two spice plants; Aframomum melegueta and Piper guineese were analyzed for phytochemical composition. The result of the phytochemical screening of the two seeds reveals the presence of alkaloids, flavonoids, tannins, saponin, steroids, cardiac glycosides and terpenes. The percentage of alkaloids in Aframomum melegueta 2.17% was higher than that in Piper guineense which contained 1.67...

The investigation of aroma compounds of the essential oils of dried fruits of black pepper (Piper nigrum) and black and white "Ashanti pepper" (Piper guineense) from Cameroon by means of solid-phase microextraction (SPME) was carried out for the first time to identify the odorous target components responsible for the characteristic odor of these valuable spices and food flavoring products. By m...

ÐThe essential oils from Piper capense, P. nigrum, P. guineense and P. umbellatum from S. Tome e Prõ ncipe were investigated for the ®rst time. They were analysed by GC, GC-mass spectrometry and C NMR. Monoterpene hydrocarbons were the main group of constituents in three of the samples (P. capense, P. nigrum and P. umbellatum), whereas for the other species (P. guineense) phenylpropanoid deri...

The study was undertaken to assess the dosage-mortality ratio and toxic effects of Piper guineense fruit extracts on the adults of Biomphalaria pfeifferi, the snail intermediate host of Schistosoma mansoni, which causes intestinal schistosomiasis. The result showed significant toxic effects with crude ethanol and hot water fruits extracts. The estimated lethal dose concentration by arithmetic m...

background: piper guineense (pg) and sesamum indicum (si) have been shown to be rich sources of antioxidants and other health benefits; hence, we evaluated the impact of its consumption in hypercholesterolemic model on lipid metabolism. methods: forty-eight animals were divided into eight groups of six rats each. rats were given cholesterol (40 mg/0.3ml), pg and si extract (100 and 200 mg/kg), ...

Effects of Piper guineense (African Black Pepper) Seeds on Lipid Profile, Renal Function Parameters, and Antioxidant Status Cavia porcellus

This study seeks to investigate the possible protective role of the methanol extract of Piper guineense seeds against CCl₄-induced hepatotoxicity in an animal model. Hepatotoxicity was induced by administering oral doses of CCl₄ (1.2 g/kg bw) three times a week for three weeks. Group 1 (Control) and Group 2 (CCl₄) were left untreated; Piper guineense (PG; 400 mg/kg bw) was administered to Group...

Experiments were conducted to study the effectiveness of powders of some underutilized botanicals for the control of Sitophilus zeamais. The tested plants are: Piptadeniastrum africanum, Piper guineense, Alstonia boonei, Garcinia kola, Xylopia aethiopica, Picralima nitida and Aristolochia repens. The effects of the powders were observed at different dosage rates : 0.0g (Control), 0.5g, 1.0g, 1....