Portal de Periódicos da CAPES

Estudo do Comportamento Reológico da Polpa e da Geléia de Umbu (Spondias tuberosa Arr.)

2015; Volume: 17; Issue: 4 Linguagem: Inglês

10.15871/1517-8595/rbpa.v17n4p349-358

1517-8595

Letícia Moreira Silva, Aymoré Santos, C.N. Silva, José Antonio Ribeiro de Souza, Vicente Javier Pérez Arguello,

Rural Development and Agriculture

This study aimed to determine the rheological integral to the pulps and centrifuged ( phases 1 and 2) umbu under 10, 20, 30, 40, 50, 60, 70 and 80 oC and jellies in 20oC, produced by umbu COOPERCUC- Agriculture Cooperative Family Canudos , Uaua and Curaca, Bahia and the ACOPRI – Community Association of Rural Produces of Icozeiro, Pontal Project, Petrolina-PE. The rheological behavior were determined by a rotacional viscometer or rheometer concentric cylinders Therms Haake DC 10, (model VT 550). The rheological models of Ostwald-de Waele, known as power law, Hershel-Bulkley, Casson and Binghan were adjusted to rheograms constructed from the experimental data. We used umbu centrifuged and separated into two phases: liquid and puree, wich showed non-Newtonian behavior. Jellies studied too showed a non-Newtonian. The most suitable model to describe the rheological behavior of the studied products was the Herschel-Bulkley, with coefficients of determination (R 2 ) greater than 0,92