Influence of Temperature and Solid Concentration on the Physical Properties of Noni (Morinda citrifolia L.) Juice

Kumoro, A. C. and Retnowati, D. S. and Budiyati, C.S. (2009) Influence of Temperature and Solid Concentration on the Physical Properties of Noni (Morinda citrifolia L.) Juice. Food and Bioprocess Technology . ISSN 1935-5149

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Abstract

The effect of temperature on the physical properties of fresh noni (Morinda citrifolia L.) juice with three different solid concentrations (5, 10, and 15°Brix) was investigated. The flow behaviour index (n) and thermal conductivity (k) were found to increase with the increase in temperature. On the other hand, the juice density (ρ) and consistency coefficient (K) were found to decrease with increasing temperature. The increase in solid concentration leads to increase juice density and consistency coefficient, but reduce flow behaviour index and thermal conductivity. The experimental data were then correlated with temperature and solid concentration using nonlinear regression equations or empirical models. It was found that the physical properties calculated using proposed equations agree well with the experimental data with coefficient of determinations (R2) ranged from 0.9897 to 0.9998.

Item Type:Article
Uncontrolled Keywords:Noni . Consistency coefficients . Flow behaviour index . Density. Thermal conductivity
Subjects:Q Science > Q Science (General)
T Technology > TP Chemical technology
Q Science > QD Chemistry
Divisions:Faculty of Engineering > Department of Chemical Engineering
Faculty of Engineering > Department of Chemical Engineering
ID Code:589
Deposited By:Dr. Andri Kumoro
Deposited On:29 Sep 2009 08:12
Last Modified:29 Sep 2009 08:12

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