Título:	Seasonal chemical compositions of the essential oils of Twoeugenia species and their acaricidal properties
Autor(es):	Ribeiro, Paulo Henrique Silva Santos, Maria Lucilia dos Câmara, Cláudio Augusto Gomes da Born, Flávia S. Fagg, Christopher William
Assunto:	Eugenia Variação sazonal Composição química Óleos essenciais
Data de publicação:	Jan-2016
Editora:	Sociedade Brasileira de Química
Referência:	RIBEIRO, Paulo H. S. et al. Seasonal chemical compositions of the essential oils of Twoeugenia species and their acaricidal properties. Química Nova, São Paulo, v. 39, n. 1, p. 38-43, jan. 2016. Disponível em: <http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-40422016000100038&lng=en&nrm=iso>. Acesso em: 13 mar. 2018. doi: http://dx.doi.org/10.5935/0100-4042.20150161.
Abstract:	The leaf essential oils of Eugenia lutescens Cambess andEugenia langsdorffii O. Berg, collected in the rainy (RS) and dry seasons (DS), were extracted by hydrodistillation and then characterized by a gas chromatography-flame ionization detector and a gas chromatography-mass spectrometer. The potential acaricidal activity and oviposition deterrence of these oils were evaluated against Tetranychus urticae . The oil yields were higher in the RS for E. lutescens, while those forE. langsdorffii were higher in the DS. α-Pinene and β-pinene were determined to be the major constituents of the oils fromE. lutescens, while bicyclogermacrene, spathulenol, and β-caryophyllene predominated in E. langsdorffii . Seasonal variations in the oils were primarily related to chemical diversity, and E. lutescens was more affected than was E. langsdorffii . The E. langsdorffii oil collected in the DS was most toxic to the spider mite, while the oils of E. lutescens and E. langsdorffii collected in the RS drastically reduced its egg quantities. This study successfully determined the periods of greater oil production and acaricidal activity.
Unidade Acadêmica:	Instituto de Química (IQ)
Licença:	Química Nova - This is an Open Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License which permits unrestricted non-commercial use, distribution, and reproduction in any medium provided the original work is properly cited (CC BY NC 4.0). Fonte: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-40422016000100038&lng=en&nrm=iso. Acesso em: 13 mar. 2018.
DOI:	http://dx.doi.org/10.5935/0100-4042.20150161
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