Food Science and Technology (Campinas)
Print version ISSN 0101-2061
GABAS, Ana Lúcia; CABRAL, Renato Alexandre Ferreira; OLIVEIRA, Carlos Augusto Fernandes de and TELIS-ROMERO, Javier. Density and rheological parameters of goat milk. Ciênc. Tecnol. Aliment. [online]. 2012, vol.32, n.2, pp. 381-385. Epub Mar 20, 2012. ISSN 0101-2061. http://dx.doi.org/10.1590/S0101-20612012005000033.
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.
Keywords : goat milk; physical property; rheological properties; rheometer.