Nanostructured systems containing an essential oil : protection against volatilization

• Autor(a) principal: Flores, Fernanda Cramer
• Data de Publicação: 2011
• Outros Autores: Ribeiro, Roseane Fagundes, Ourique, Aline Ferreira, Rolim, Clarice Madalena Bueno, Silva, Cristiane de Bona da, Pohlmann, Adriana Raffin, Beck, Ruy Carlos Ruver, Guterres, Silvia Stanisçuaski
• Tipo de documento: Artigo
• Idioma: eng
• Título da fonte: Repositório Institucional da UFRGS
• Texto Completo: http://hdl.handle.net/10183/72888
• topic: Nanoemulsões; Nanocápsulas; Óleos essenciais; Nanoemulsions; Nanocapsules; Tea tree essential oil

The goal of this study was to evaluate the feasibility of preparing nanocapsules and nanoemulsions using tea tree oil as oily phase aiming to protect its volatilization. The nanostructures presented nanometric mean size (160-220 nm) with a polydispersity index below 0.25 and negative zeta potential. The pH values were 6.43 ± 0.37 and 5.98 ± 0.00 for nanoemulsions and nanocapsules, respectively. The oil content after preparation was 96%. The inclusion of tea tree oil in nanocapsules showed higher protection against volatilization. The analysis of mean size and polydispersity index of formulations presented no significant alteration during the storage time.