Rheological behavior of pineapple and mango pulps

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Abstract

The rheological behavior of whole and centrifuged mango (Mangífera indica L. var. Keitt) and pineapple (Ananas comusus L. merr var Pérola) pulps was analysed at 30°C, in a rotational viscometer Haake Rotovisco RV-20. The experiments were conducted with measuring system of 45 mm diameter parallel plates (PQ45) with gap of 0.5 mm, at shear rates up to 874 s-1. The rheograms were fitted with Casson, Ostwald-of-Waelle and Mizrahi-Berk (M-B) models. The Brix of pineapple and mango pulps were 16.6 and 13.3°Brix, respectively, and the insoluble solids content was 0.108 g/kg for mango and 0.054 g/kg for pineapple. The best adjustment was obtained with M-B model. It was observed that the pulps presented pseudoplastic behavior, and the suspended solids had great influence on the consistency index. © 2002 Elsevier Science Ltd. All rights reserved.

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Pelegrine, D. H., Silva, F. C., & Gasparetto, C. A. (2002). Rheological behavior of pineapple and mango pulps. LWT, 35(8), 645–648. https://doi.org/10.1006/fstl.2002.0920

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