In vitro evaluation of the composition and acaricidal efficacy of Urtica fissa leaf ethyl acetate extract against Sarcoptes scabiei mites

F Liao, T Bao, G Tao, Y Hu and C Han
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F Liao: Key Laboratory of Animal Disease and Human Health of Sichuan Province, College of Veterinary Medicine, Sichuan Agricultural University, Wenjiang, P.R. China
T Bao: Guizhou Vocational College of Agriculture, Qingzhen, P.R. China
G Tao: Qiandongnan Center for Animal Disease Control and Prevention, Kaili, Guizhou, P.R. China
Y Hu: Key Laboratory of Animal Disease and Human Health of Sichuan Province, College of Veterinary Medicine, Sichuan Agricultural University, Wenjiang, P.R. China
C Han: Qiandongnan Center for Animal Disease Control and Prevention, Kaili, Guizhou, P.R. China

Veterinární medicína, 2023, vol. 68, issue 5, 200-207

Abstract: In veterinary medicine, natural products provide an alternative to chemical agents for mite management. In the present study, the acaricidal efficacy of Urtica fissa leaf ethyl acetate extract against Sarcoptes scabiei mites was examined. The chemical composition of the extract was determined using liquid chromatography-mass spectrometry (LC-MS) analysis. The ethyl acetate extract was found to be extremely toxic to mites at a concentration of 100 mg/ml (m/v), killing all S. scabiei within two hours. The median lethal time (LT50) values for ethyl acetate extract concentrations of 25, 50, and 100 mg/ml against S. scabiei were 1.706, 1.204, and 0.750 h, respectively. The median lethal dosage (LC50) for S. scabiei was 19.14 mg/ml at two hours. The chemical composition of the ethyl acetate extract was evaluated using LC-MS, showing that the major components were schaftoside (8.259%), carnosol (6.736%), prostaglandin A2 (5.94%), 13(S)-HpOTrE (4.624%), nandrolone (4.264%), 1H-indole-3-carboxaldehyde (4.138%), 9-oxoODE (3.206%), and stearidonic acid (2.891%). In conclusion, these findings indicate that Urtica fissa contains promising new acaricidal compounds capable of successfully controlling animal mites.

Keywords: acaricidal properties; LC-MS; sarcoptic mange; Urtica fissa (search for similar items in EconPapers)
Date: 2023
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Persistent link: https://EconPapers.repec.org/RePEc:caa:jnlvet:v:68:y:2023:i:5:id:6-2023-vetmed

DOI: 10.17221/6/2023-VETMED

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