Acaricidal Properties of Bio-Oil Derived From Slow Pyrolysis of Crambe abyssinica Fruit Against the Cattle Tick Rhipicephalus microplus (Acari: Ixodidae).

Autor:	Mattos C; Laboratory of Pest and Parasite Studies, Department of Cellular and Molecular Biology, Institute of Biology, Fluminense Federal University, Niterói, Brazil.; Postgraduate Program in Science and Biotechnology, Fluminense Federal University, Niterói, Brazil., Andrade J; Laboratory of Pest and Parasite Studies, Department of Cellular and Molecular Biology, Institute of Biology, Fluminense Federal University, Niterói, Brazil.; Postgraduate Program in Science and Biotechnology, Fluminense Federal University, Niterói, Brazil., Salarini Peixoto B; Laboratory of Synthesis, Chromatography, and Environment, Department of Organic Chemistry, Institute of Chemistry, Fluminense Federal University, Niterói, Brazil.; Postgraduate Program in Chemistry, Fluminense Federal University, Niterói, Brazil., Tavares Moraes NL; Laboratory of Pest and Parasite Studies, Department of Cellular and Molecular Biology, Institute of Biology, Fluminense Federal University, Niterói, Brazil., da Cunha Veloso MC; Laboratory of Synthesis, Chromatography, and Environment, Department of Organic Chemistry, Institute of Chemistry, Fluminense Federal University, Niterói, Brazil., Alves Romeiro G; Laboratory of Synthesis, Chromatography, and Environment, Department of Organic Chemistry, Institute of Chemistry, Fluminense Federal University, Niterói, Brazil.; Postgraduate Program in Chemistry, Fluminense Federal University, Niterói, Brazil., Folly EDC; Laboratory of Pest and Parasite Studies, Department of Cellular and Molecular Biology, Institute of Biology, Fluminense Federal University, Niterói, Brazil.; Postgraduate Program in Science and Biotechnology, Fluminense Federal University, Niterói, Brazil.; National Institute of Science and Technology, Molecular Entomology, Rio de Janeiro, Brazil.
Jazyk:	angličtina
Zdroj:	Frontiers in physiology [Front Physiol] 2021 Dec 02; Vol. 12, pp. 768522. Date of Electronic Publication: 2021 Dec 02 (Print Publication: 2021).
DOI:	10.3389/fphys.2021.768522
Abstrakt:	Slow pyrolysis is a process for the thermochemical conversion of biomasses into bio-oils that may contain a rich chemical composition with biotechnological potential. Bio-oil produced from crambe fruits was investigated as to their acaricidal effect. Slow pyrolysis of crambe fruits was performed in a batch reactor at 400°C and chemical composition was analyzed by gas chromatography-mass spectrometry (GC-MS). The bio-oil collected was used in bioassays with larvae and engorged females of the cattle tick Rhipicephalus microplus. Biological assays were performed using the larval packet test (LPT) and adult immersion test. The GC-MS of crambe fruit bio-oil revealed mainly hydrocarbons such as alkanes and alkenes, phenols, and aldehydes. The bio-oil in the LPT exhibited an LC90 of 14.4%. In addition, crambe bio-oil caused female mortality of 91.1% at a concentration of 15% and a high egg-laying inhibition. After ovary dissection of treated females, a significant reduction in gonadosomatic index was observed, indicating that bio-oil interfered in tick oogenesis. Considering these results, it may be concluded that slow pyrolysis of crambe fruit affords a sustainable and eco-friendly product for the control of cattle tick R. microplus. Competing Interests: The authors declare that the research was conducted in the absence of any commercial or financial relationships that could be construed as a potential conflict of interest. (Copyright © 2021 Mattos, Andrade, Salarini Peixoto, Tavares Moraes, da Cunha Veloso, Alves Romeiro and Folly.)
Databáze:	MEDLINE
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