Toxicity of three chemical extracts of black pepper fruits against two stored grain insect pests
Journal Title: International Journal of Pharmaceutical Science Invention - Year 2017, Vol 6, Issue 10
Abstract
Three extracted fractions from black pepper fruits, Piper nigrum L, in four concentrations were evaluated for their toxicity effects against stored grain pests, red rusty flour beetle Tribolium castaneum Hbst. and their stages, and Sitophilus oryzae L., the adult rice weevil. The obtained results revealed that the etheric fraction caused higher mortality than that of two other solvent fractions, towards all target pests. The adult rice weevil was the most susceptible, followed by the larvae, adult > eggs > pupae of red flour beetle. The mortality percentage reached to 100% at a concentration 2.5% (w/w) after 21 day of treatment of adult rice weevil, while was 100% at conc. 5% (w/w) in same period in case of adult red flour beetle, and the LC50 between both adult pests were 2.43 and 3.52, respectively. The reduction in F1 progeny in all treatments were greatly significant and was higher than the mortality in low concentrations, ranged from 73% to 100% according to the concentration and insect. By using GC/MS analysis was found a functional groups and compounds in the oil, were determined and identified the main constituents which may cause the mortality, as well as their structures, formulae and percentages. The main components were monoterpenes, Sesquiterpenes, fatty acids and alkaloids, and some of effective constituents were α-pinene, Linalool, α-Copaene, Linoleic acid and Piperin.
Authors and Affiliations
Hussein A. E. , Abd Elhaseeb H. , Mohamed R. A. , Abdel-Mogib M. , Abou Elnaga Z.
Flexural Strength of Poly Propylene Fiber Reinforced PMMA
Poly Methyl Methacrylate based restorations are widely accepted in dental and medical field due to the excellent biocompatibility and easy fabrication, however these restorations exhibit inferior mechanical properties. T...
A Study on The Characteristics of Logistics System of Taiwan’s Cosmeceutical Industry
The purpose of this study is to explore the characteristics of the logistics system in Taiwan's cosmeceutical industry. The logistics system of the cosmeceutical industry includes the logistics information system, the ex...
Phytochemical Screening and Antimicrobial Effects of Leaf and Root Extracts of Crotalaria Brevidens on Candida Albicans, Staphylococcus Aureus and Escherichia Coli in Maseno (Kenya)
Crotalaria brevidens (slenderleaf) leaves and shoots are used as food and have medicinal properties when consumed by human beings. It also acts as an agent in promotion of suicidal germination of striga, a parasitic plan...
Difficult To Treat Asthma with Cardiac Arrhythmia
.
Dissolution Enhancement of BCS Class 4 Dssrugs Using Quality by Design Approach with Solid Dispersion Technique
Solid dispersion is one of the vastly accepted and practically economical processes in bioavailability enhancement study. The present investigation deals mostly with increase in solubility and dissolution rate of BCS cla...