Estudo do comportamento reológico de polpas de caju (Anacardium occidentale, L.), acerola (Malpighia emarginata, D.C.) e manga (Mangifera indica, L.)

Abstract

The knowledge of the fruit tropical pulps rheological behavior have a great importance for the consumers and food process industries. In this work it was studied the rheological behavior of the cashew apple (Anacardium occidentale, L.), mango (Mangifera indica, L) and acerola (Malpighia emarginata, DC) single strength, frozen and pasteurized pulps. The experimental measurements were carried out in concentric cylinder rheometer and the experimental data were fitted to models of Ostwald-de-Waelle and Bingham. There were evaluated chemical, physical-chemical and microbiological parameters. In this work, in order to adjust the rheological parameters, the model that presented the best description was the Ostwald-de-Waelle for the mango and acerola pulps, and Bingham for cashew apple pulp. The samples presented non-Newtonian and pseudoplastic character. The chemical and physicochemical analysis showed the nutritional value of the studied fruits. The microbiological results presented satisfactory hygienic and sanitary conditions in pulps processing.