versão impressa ISSN 0100-6916
DUARTE, Maria E. M.; GOUVEIA, Deyzi S.; MATA, Mario E. R. M. C. e QUEIROZ, Alexandre J. de M.. Rheological behavior of mixed drink of annona and milk. Eng. Agríc. [online]. 2012, vol.32, n.2, pp. 333-341. ISSN 0100-6916. http://dx.doi.org/10.1590/S0100-69162012000200013.
In this study the rheological behavior in different temperatures (0; 6; 18 e 24 ºC) and physicochemical parameters of integral annona (Annona squamosa) pulp and the annona pulp with milk in different percentages pulp/milk (75g of annona pulp/25g of milk, 50g of annona pulp/50g of milk, 25g of annona pulp/75g of milk) have been availed, in order to verify the effect of temperature and pulp concentration in the rheological behavior of these beverages. To obtain the rheological parameters a concentric cylinder rheometer has been used and the rheograms were analyzed using the Ostwald-de-Wael (power Law) and Herschel-Bulkley models. The physicochemical parameters (sugars, pH, ash, acidity and soluble solids) were determined in order to establish correlations with the rheological behavior. Finally, the best results had been obtained using the Herschel-Bulkley model; the low values for the behavior index (n <1) obtained confirm the pseudoplastic behavior of all samples.
Palavras-chave : fruit; rheology; agro-industry; processing.