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نائل محمود أبوطه

Associate Professor

عضو هيئة تدريس

كلية العلوم
كلية العلوم-كرسي أبحاث المنتجات الحيوية رقم المعمل AB85

Bioassay-guided fractionation of a dried commercial source, Alpinia galanga (L.) Willd rhizomes extract, against Culex pipiens (Diptera: Culicidae)

The increasing risk of insecticide resistance in mosquito populations has led to the search for new larvicidal agents. Evaluation of bioassay-guided fractionation of the rhizome extract of Alpinia galanga (L.) Willd against Aedes aegypti was assessed. Bioactive fractions were isolated from the rhizome extract of A. galanga using a Soxhlet extractor and chromatography techniques, and subsequently tested against the fourth instar of Culex pipiens. The lethal concentration (LC) was calculated via log-probit analysis. The active fraction was evaluated by gas chromatography-mass spectroscopy (GC–MS) and infrared (IR) analysis. The highest larvicidal potential obtained from bioassays using the Soxhlet apparatus was observed in dichloromethane (DCM) and ethyl acetate (EtoAc) extracts, with LC50 values of 124.49 and 176.30 ppm, respectively, after 24 h of exposure. Subsequently, the DCM extract was subjected to column and thin-layer chromatography. Results of the DCM extraction and the active TLC fraction (F133) of the Rf value 0.5 revealed that LC50 and LC90 values decreased over time. The F133 fraction of A. galanga exhibited zero hatchability (100% mortality) at LC50 (63.416 ppm) and LC25 (31.70 ppm) against Cx. pipiens eggs. GC–MS analysis of the active thin-layer chromatography TLC fraction (F133) revealed the presence of phenol 2 4-bis (1 1-dimethylethyl), which was identified as the major compound. Alpinia galanga extract is a promising candidate for the control of mosquito populations. Further study is required to determine the effect of the extracts on non-target organisms.

Publication Work Type
بحث
Publisher Name
Journal of Asia-Pacific Entomology
more of publication
publications

Cancer is reported to be the leading cause of death and illness worldwide. This research aims to evaluate the phytochemicals,

by Ahmed I. Alsayadi1 · Nael Abutaha1 · Bader O. Almutairi1 · Fahd A. Al‑Mekhlaf1 · Mohamed A. Wadaan1
2022
Published in:
Environmental Science and Pollution Research
publications
by Yahia Nasser Mabkhot , Abha ( SA ) ; Jamal Mohammed Ali Khaled , Riyadh ( SA ) ; Naiyf Sultan Helial Alaloi Alharbi , Riyadh ( SA ) ; Fahd Ali Nasr Mohammed , Riyadh ( SA ) ; Fahd Abdo Almekhlafi , Riyadh ( SA ) ; Nael Mahmmoud Abutaha , Riyadh ( SA ) ; S
publications

The essential oil of Ducrosia ismaelis Asch. (Apiaceae) that grows wild in Saudi Arabia was investigated utilizing gas chromatography (GC), and gas chromatography-mass spectrometry. Fifty…

by Ramzi A. Mothana, Fahd A. Nasr, Jamal M. Khaled, Omar M. Noman, Nael Abutaha, Adnan J. Al-Rehaily, Omar M. Almarfadi and Mine Kurkcuoglu
Published in:
open chemistry