Efficacy of the Green Tea, Camellia sinensis Leaves Extract on Some Biological Activities of Culex pipiens and the Detection of Its Phytochemical Constituents
Hassan, M., Atwa, W., Moselhy, W., Mahmoud, D. (2020). Efficacy of the Green Tea, Camellia sinensis Leaves Extract on Some Biological Activities of Culex pipiens and the Detection of Its Phytochemical Constituents. EKB Journal Management System, 12(1), 59-70. doi: 10.21608/eajbsf.2020.78354
Mostafa I. Hassan; Wedad A. Atwa; Walaa A. Moselhy; Doaa A. Mahmoud. "Efficacy of the Green Tea, Camellia sinensis Leaves Extract on Some Biological Activities of Culex pipiens and the Detection of Its Phytochemical Constituents". EKB Journal Management System, 12, 1, 2020, 59-70. doi: 10.21608/eajbsf.2020.78354
Hassan, M., Atwa, W., Moselhy, W., Mahmoud, D. (2020). 'Efficacy of the Green Tea, Camellia sinensis Leaves Extract on Some Biological Activities of Culex pipiens and the Detection of Its Phytochemical Constituents', EKB Journal Management System, 12(1), pp. 59-70. doi: 10.21608/eajbsf.2020.78354
Hassan, M., Atwa, W., Moselhy, W., Mahmoud, D. Efficacy of the Green Tea, Camellia sinensis Leaves Extract on Some Biological Activities of Culex pipiens and the Detection of Its Phytochemical Constituents. EKB Journal Management System, 2020; 12(1): 59-70. doi: 10.21608/eajbsf.2020.78354

Efficacy of the Green Tea, Camellia sinensis Leaves Extract on Some Biological Activities of Culex pipiens and the Detection of Its Phytochemical Constituents

Egyptian Academic Journal of Biological Sciences, F. Toxicology & Pest Control
Article 7, Volume 12, Issue 1, June 2020, Page 59-70  XML PDF (426.4 K)
Document Type: Original Article
DOI: 10.21608/eajbsf.2020.78354
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Authors
Mostafa I. Hassan1; Wedad A. Atwa2; Walaa A. Moselhy2; Doaa A. Mahmoud3
1Department of Zoology and Entomology, Faculty of Science, Al-Azhar University, Cairo, Egypt
2Department of Zoology, Faculty of Science (Girls), Al-Azhar University, Cairo, Egypt.
3Department of Zoology, Faculty of Science (Girls), Al-Azhar University, Cairo, Egypt
Abstract
 The mosquitocidal and repellent activity of the green tea, Camellia sinensis leaves extract against Culex pipiens was evaluated. Toxicity of this extract increased with increasing the concentration, the recorded LC50 was 540 and 600 ppm for larvae and pupae, respectively. The extract showed a significant prolongation in both larval and pupal duration. In addition, it caused a great effect in pupation and adult emergence percent. The green tea, Camellia sinensis leaves extract was found to have a remarkable malformative effect on both larvae and pupae. The green tea leaves extract was effective in exhibiting antifeedant and repellent activity against Culex pipiens mosquitoes; it gave the highest protection (100%) from the bites of starved females at the dose of 6 mg/cm2. The major bioactive chemical constituents in green tea leaves extract were identified using HPLC and FT-IR analysis. These results suggest that the leaves extract of green tea, Camellia sinensis can be considered as alternative mosquitocide and repellent agent. 
Keywords
larvicial; repellent; Culex pipiens; green tea; Camellia sinensis
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