2017-02-072017-02-072015-03-04SOUSA, Erika Milene Pinto de Sousa. Extração, estabilidade, reologia e higroscopicidade do corante de pitaya (Hylocereus Costaricencis). Orientador: Lênio José Guerreiro de Faria. 2015. 148 f. Tese (Doutorado em Engenharia de Recursos Naturais da Amazônia) - Instituto de Tecnologia, Universidade Federal do Pará, Belém, 2015. Disponível em: http://repositorio.ufpa.br/jspui/handle/2011/7582. Acesso em:.https://repositorio.ufpa.br/handle/2011/7582With the advancement of new technologies the natural dyes market is expanding with the purpose to replace the artificial dyes, harmful to health. Natural dyes from fruit, give the product a more natural appearance, opposed what occur with synthetic tones. In this context, perform out extraction of dragon fruit dye contained in the fruit pulp, by immersion in distilled water, then makes up the physical and physico-chemical characterization of pulp, the study of the stability at light and temperature of concentration from betacyanin and dye color, quantifying the betacyanin content by UV spectrophotometry and color by colorimetric tristimulus using the CIE L * a * b *. Also evaluates up the rheological behavior of pulp pitaya diluted in distilled water at a ratio of 1: 1 by means of mathematical models with the support of ReoWin and Statistica 7.0 program. Finally, the study it’s made a hygroscopicity study obtained by freeze-drying at different concentrations maltodextrin, also analyzing the pure dye by verifying through of sorption curves optimal storage conditions for dragon fruit dye.Acesso AbertoPitayaHylocereus costaricensisHigroscopicidadeReologiaCorantes naturaisCorante de pitayaHygroscopicityRheologyNatural dyesPitaya dyeTeseCNPQ::ENGENHARIAS::ENGENHARIA QUIMICA::TECNOLOGIA QUIMICA::PRODUTOS NATURAIS