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Chem Biodivers

Title:		Chemical Composition and Insecticidal Activity against Tribolium Castaneum of Thapsia garganica L. Seed Essential Oil
Author(s):		Khemis E; Mustapha MB; Chaieb I; Ascrizzi R; Flamini G; Harrath AH; Jannet HB; Zardi-Bergaoui A;
Address:		"Laboratory of Heterocyclic Chemistry, Natural Products and Reactivity (LR11ES39), Team: Medicinal Chemistry and Natural Products, Faculty of Science of Monastir, University of Monastir, Avenue of Environment, 5019, Monastir, Tunisia. University of Sousse, Regional Center of Research on Horticulture and Organic Agriculture, 57, ChottMariem, TN-4042, Sousse, Tunisia. Dipartimento di Farmacia, Universita di Pisa, Via Bonanno 6, 56126, Pisa, Italy. Centro Interdipartimentale di Ricerca 'Nutraceutica e Alimentazione per la Salute' Nutrafood, University of Pisa, Italy. Department of Zoology, College of Science, King Saud University, Riyadh, 11451, Saudi Arabia"
Journal Title:		Chem Biodivers
Year:		2023
Volume:		20230119
Issue:		2
Page Number:		e202200646 -
DOI:		10.1002/cbdv.202200646
ISSN/ISBN:		1612-1880 (Electronic) 1612-1872 (Linking)
Abstract:		"Due to the several side effects of synthetic pesticides, including environmental pollution, threats to human health, and the development of pest resistance to insecticides, the use of alternative healthy, available and efficient agents in pest management strategies is necessary. Recently, the use of essential oil obtained from aromatic plants has shown significant potential for insect pest management. For this reason, the essential oil isolated from seeds of Thapsia garganica L. was investigated for the first time for its chemical profile, and its toxicity and repellency effects against Tribolium castaneum adults. Qualitative and quantitative analyses of the chemical composition by gas chromatography coupled to mass spectrometry (GC/MS) revealed the presence of 18 organic volatiles representing 96.8 % of the total constituents. The main compounds were 1,4-dimethylazulene (51.3 %) followed by methyl palmitate (8.2 %), methyl linoleate (6.2 %) and costol (5.1 %). Concerning the repellent effect, results revealed that SEO (Seed Essential Oil) was very repellent towards T. castaneum adults, with 100 % repellency after 2 h of exposure. Furthermore, the essential oil exhibited remarkable contact toxicity against T. castaneum (93.3 % of mortality) at the concentration of 10 % (v/v). The median lethal dose (LD(50) ) of the topical application of the seed essential oil was 4.4 %. These encouraging outcomes suggested that the essential oil from T. garganica seeds could be considered a potent natural alternative to residual persistent and toxic insecticides"
Keywords:		"Animals Humans *Oils, Volatile/chemistry *Tribolium *Insecticides/chemistry Thapsia *Insect Repellents/pharmacology Seeds/chemistry *Coleoptera Gc/ms Thapsia garganica chemical composition essential oil pest management;"
Notes:		"MedlineKhemis, Eya Mustapha, Mayssa Ben Chaieb, Ikbel Ascrizzi, Roberta Flamini, Guido Harrath, Abdel Halim Jannet, Hichem Ben Zardi-Bergaoui, Afifa eng RSP2023R17/Higher Institute of Biotechnology of Monastir, Tunisia/ King Saud University, Riyadh, Saudi Arabia/ Switzerland 2023/01/18 Chem Biodivers. 2023 Feb; 20(2):e202200646. doi: 10.1002/cbdv.202200646. Epub 2023 Jan 19"