Oliveira, Juliana SoaresAguiar, Tatiana AraujoMezadri, HygorSantos, Orlando David Henrique dos2017-03-232017-03-232011OLIVEIRA, J. S et al. Attainment of hydrogel-thickened nanoemulsions with tea tree oil (Melaleuca alternifolia) and retinyl palmitate. African Journal of Biotechnology, v. 10, p. 13014-13018, 2011. Disponível em: <http://www.ajol.info/index.php/ajb/article/view/96509>. Acesso em: 10 jan. 2017.1684-5315http://www.repositorio.ufop.br/handle/123456789/7446We propose the development of hydrogel-thickned nanoemulsions (HTNs) with tea tree essential oil (Melaleuca alternifolia) and vitamin A palmitate (retinyl palmitate). Nanoemulsions and HTNs were produced by the use of phase inversion method, employing non-ionic surfactants. As surfactant phase were used sorbitan esters and hydrogenated/ethoxylated castor oil. HTNs with drops size ranging between 86 to 96 nm were obtained, depending on the polymer used, with increased viscosity. Rheological profile of developed HTNs was determined, showing the influence of the kind of polymer used, here all presented pseudo-plastic behaviour, with different viscosity measurement.en-USabertoEssential oilPhase inversionVitamin AArtigo publicado em periodicoO periódico African Journal of Biotechnology permite o arquivamento da versão PDF do editor. Fonte: Sherpa/Romeo <http://www.sherpa.ac.uk/romeo/issn/1684-5315/pt/>. Acesso em: 06 nov. 2019.http://dx.doi.org/10.5897/AJB11.249