Flow behavior and physicochemical characterization of peach pulps
DOI:
https://doi.org/10.17268/sci.agropecu.2012.02.01Keywords:
Rheology, peach pulp, physicochemical properties, soluble solids, temperature, power law, pseudoplastic.Abstract
Rheological and physicochemical analyses were conducted on nine varieties of peach pulps from Mendoza (Argentina) at a range of soluble solids concentration (12.5 to 28°Brix) and temperatures (30 to 50°C).The rheology of the pulps followed the power law model for all conditions, behaving as pseudoplastic fluids. Rheological: consistency coefficient and flow behavior index, using a rotational type viscometer and physicochemical parameters (methods proposed by AOAC): soluble solids, pH, water content, insoluble solids, acidity and pectin content (refractometric method) were determined in this study. Cluster analysis established two groups (1: Halford, Andross, Astengo, Bowen, Sim’s Cling; 2: Fortuna, Loadel and Palora; Sullivan Cling variety could not be assigned to any group) with significant differences.
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* Autor para correspondencia.
E-mail: emunoz@fcai.uncu.edu.ar (Dr. E. Muñoz Puntes).
Recibido 25 enero 2012.
Aceptado 26 abril 2012.
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