Siparuna guianensis Aublet como nova fonte de α-Bisabolol para o controle de Rhipicephalus microplus

• Autor(a) principal: Diniz, Juliana Aparecida
• Data de Publicação: 2014
• Tipo de documento: Dissertação
• Idioma: por
• Título da fonte: LOCUS Repositório Institucional da UFV
• Texto Completo: http://locus.ufv.br/handle/123456789/2166
• topic: Siparuna guianensis Aublet; α-bisabolol; Rhipicephalus microplus; Plantas - Análise - Zona da Mata (MG-Mesorregião); Óleos vegetais - Análise - Zona da Mata (MG-Mesorregião; Siparuna guianensis Aublet; α-bisabolol; Rhipicephalus microplus; Plants - Analysis - Zona da Mata (Meso-MG); Vegetable oils - Analysis - Zona da Mata (MG-Mesoregion); CNPQ::CIENCIAS AGRARIAS

The data presented are seasonal chemical analysis of the essential oil from the leaves of Siparuna guianensis collected in different municipalities in Zona da Mata region, Minas Gerais state (São Miguel do Anta, Tocantins, Porto Firme, Viçosa). Aimed to the identification of α-bisabolol from the volatile constituents of this species. We evaluated the activity of volatile oils from ticks. The α-bisabolol was identified only in oils volatiles collected in São Miguel do Anta and Tocantins, reaching concentrations of 86.0% and 66.4% respectively. Essential oils from plants collected in Porto Firme had as major constituents bicyclogermacrene and curzerene (33%) along quantified. Essential oil plants Viçosa, identified germacrene D (33%) as major constituent throughout the analysis period. The α-bisabolol was isolated and characterized by mass spectrometry, NMR and specific rotation of polarized light, indicating that the isolated compound is the (-)-α-bisabolol. The acaricide activity of the essential oil of S. guianensis was evaluated against Rhipicephalus microplus. The essential oils obtained by plants that have α-bisabolol in its composition were more active against larvae and females of R. microplus. At the concentration of 60 mg mL-1 essential oils populations of São Miguel do Anta and Tocantins control showed 87.8% and 77.4%, respectively. It is concluded that the species S. guianensis shows variation in chemical composition and essential oil content depending on the collection site, and that populations of Siparuna guianensis collected in Tocantins and São Miguel do Anta represent alternative sources of α-bisabolol.