alexa Bioefficacy of Solvent Fractions of Oreosyce africana and Piper capense against the Malaria Vector, Anopheles arabiensis with High Performance Liquid Chromatographic and Ultraviolet-Visible Spectroscopic Analysis | Abstract
ISSN: 2161-1009

Biochemistry & Analytical Biochemistry
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Research Article

Bioefficacy of Solvent Fractions of Oreosyce africana and Piper capense against the Malaria Vector, Anopheles arabiensis with High Performance Liquid Chromatographic and Ultraviolet-Visible Spectroscopic Analysis

Damtew Bekele1*, Habte Tekie2, Zemede Asfaw3 and Beyene Petros4

1College of Natural and computational Sciences, Department of Biology, Debre Markos University, Debre Markos, Ethiopia

2College of Natural Sciences, Department of Zoological Sciences, Addis Ababa University, Addis Ababa, Ethiopia

3College of Natural Sciences, Department of Plant Biology and Biodiversity Management, Addis Ababa University, Addis Ababa, Ethiopia

4College of Natural Sciences, Department of Microbial, Cellular and Molecular Biology, Addis Ababa University, Addis Ababa, Ethiopia

*Corresponding Author:
Damtew Bekele
College of Natural and computational Sciences
Department of Biology, Debre Markos
University, Debre Markos, Ethiopia
Tel:
0912-179124
E-mail:
[email protected]

Received date: July 30, 2016; Accepted date: September 20, 2016; Published date: September 24, 2016

Citation: Bekele D, Tekie H, Asfaw Z, Petros B (2016) Bioefficacy of Solvent Fractions of Oreosyce africana and Piper capense against the Malaria Vector, Anopheles arabiensis with High Performance Liquid Chromatographic and Ultraviolet-Visible Spectroscopic Analysis. Biochem Anal Biochem 5:294. doi:10.4172/2161-1009.1000294

Copyright: © 2016 Bekele D, et al. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.

Abstract

The efficacy of synthetic inorganic insecticides to control malaria vector mosquitoes is compromised by increased mosquito resistance to insecticides. Furthermore, use of inorganic insecticides raises serious environmental toxicity concerns. The test plants, Oreosyce africana and Piper capense were identified in Ethiopia through ethnobotanical leads obtained on the basis formal and informal field interviews and discussions coupled with literature search for sister species tested elsewhere. The plant powder from these species was extracted using 80% methanol and the methanol crude extracts of Oreosyce africana and Piper capense were sequentially fractionated with solvents (dichloromethane, ethyl acetate and deionized water). Each fraction was dissolved in dimethyl sulfoxide and deionized water; test concentration prepared and tested for their bioactivity against Anopheles arabiensis adults. The dichloromethane fraction of Oreosyce africana and ethyl acetate fraction of Piper capense had higher adulticidal activities with LC50 and LC90 values of 4.27 and 14.12 ppm and 10.72 and 30.59 ppm, respectively. Comparison of dichloromethane fraction of Oreosyce africana with ethyl acetate and water fractions showed significant differences at p<0.05. And comparison of ethyl acetate fraction of Piper capense with dichloromethane and water fractions showed significant differences at p<0.05. Thus, the bioassays with dichloromethane fraction of Oreosyce africana and ethyl acetate fraction of Piper capense exhibited higher adulticidal effect against Anopheles arabiensis than other solvent fractions. Dichloromethane fraction of Oreosyce africana and ethyl acetate fraction of Piper capense were examined under HPLC and UV-Vis for the proximate analysis. These plant products would be ideal alternatives for the control of malaria vector mosquitoes upon fractionation and preparation of suitable delivery packages.

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