Stability of the Cereus jamacaru powder during storage/ Estabilidade da polpa do Cereus jamacaru em po durante o armazenamento

In this study the stability of the Cereus jamacaru pulp fruit powder formulated with 10% maltodextrin, with equivalent dextrose (DE) of 10 and 14, packed in laminated packages during 50 days of storage under controlled conditions (25[degrees]C and relative humidity of 57.7%) was evaluated. During storage at interval of 10 days analysis of moisture content, water activity, titratable acidity, ascorbic acid, color and wettability were performed. It was found that the laminated packaging failed to prevent the absorption of water with darkening of product. The water activity of the samples is considered microbiologically safe, because reached the maximum value of 0.351. The wettability of the fruit powder was higher using maltodextrin with DE 14 with reduction in the ascorbic acid content. The dextroses within their specificities showed similar behavior in powder samples. Key words: Cereus jamacaru P. DC. maltodextrin dextrose equivalent packaging shelf life Neste trabalho se avaliou a estabilidade do fruto do mandacaru em po formulado com 10% de maltodextrina nas dextroses equivalentes (DE) de 10 e 14, acondicionado em te embalagens laminadas durante 50 dias de armazenamento em condicoes controladas (25 [degrees]C e umidade relativa de 57,7%). Durante o armazenamento foram realizadas, a cada 10 ias, as analises do teor de agua, atividade de agua, acidez total titulavel, acido ascorbico, cor e molhabilidade. Verificou-se que as embalagens laminadas nao conseguiram impedir a absorcao de agua com escurecimento do produto. A atividade de agua das amostras e considerada microbiologicamente segura em razao de ter atingido o valor maximo de 0,351. A molhabilidade do fruto em po foi maior utilizando-se a maltodextrina com DE 14 com reducao do teor de acido ascorbico. Dentro de suas especificidades as dextroses apresentaram comportamentos semelhantes nas amostras em po. Palavras-chave: Cereus jamacaru maltodextrina dextros equivalen embalagem vida de prateleira