Density and rheological parameters of goat milk

Author:

Gabas Ana Lúcia1,Cabral Renato Alexandre Ferreira2,Oliveira Carlos Augusto Fernandes de1,Telis-Romero Javier2

Affiliation:

1. Universidade de São Paulo, Brasil

2. Universidade Estadual Paulista, Brasil

Abstract

The rheological behavior and density of goat milk was studied as a function of solids concentration (10.5 to 50.0%) and temperature (273 to 331 k). Newtonian behavior was observed for values of total solids (TS) between 10.5 and 22.0% and temperatures from 276 to 331 k changing to pseudoplastic behavior without yield stress for TS from 25.0 to 39.4% at the same range of temperature. Goat milk with TS between 44.3 to 50.0% and temperatures of 273 to 296 k showed yield stress in addition to pseudoplastic behavior. At 303 to 331 k the power law model was observed again, without yield stress. The density of goat milk ranged from 991.7 to 1232.4 kg.m-3.

Publisher

FapUNIFESP (SciELO)

Subject

Food Science,Biotechnology

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