Artículos de revistas
Influence Of Temperature On The Rheological Behavior Of Jaboticaba Pulp [influência Da Temperatura No Comportamento Reológico Da Polpa De Jabuticaba]
Registro en:
Ciencia E Tecnologia De Alimentos. , v. 27, n. 4, p. 890 - 896, 2007.
1012061
10.1590/S0101-20612007000400033
2-s2.0-40449130121
Autor
Sato A.C.K.
Da Cunha R.L.
Institución
Resumen
The steady state and dynamic rheological behavior of jaboticaba pulp was studied at different temperatures (5, 25, 45, 65 and 85°C). Flow curves were obtained from 0 to 300 s-1 and the data were fitted to different models. The Herschel-Bulkley model showed the best fit (R2 > 0.98) to the experimental data. Increasing the temperature caused a decrease in the consistency index (k) and a slight increase in the flow index (n). Oscillatory rheological measurements were taken in the viscoelastic region to obtain mechanical spectra. The storage modulus (G′) of samples stored at 5°C was much higher than that recorded at other temperatures, indicating more intense particle interactions at this temperature, which contributed to strengthen the elastic network. 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