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RHEOLOGICAL BEHAVIOR OF LOQUAT ( ERIOBOTRYA JAPONICA ) JUICES
Author(s) -
IBARZ A.,
GARVÍN A.,
COSTA J.
Publication year - 1996
Publication title -
journal of texture studies
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.593
H-Index - 54
eISSN - 1745-4603
pISSN - 0022-4901
DOI - 10.1111/j.1745-4603.1996.tb00067.x
Subject(s) - rheology , eriobotrya , bingham plastic , arrhenius equation , shear rate , pulp (tooth) , viscosity , shear stress , newtonian fluid , japonica , apparent viscosity , non newtonian fluid , chemistry , materials science , thermodynamics , food science , composite material , activation energy , botany , organic chemistry , physics , medicine , pathology , biology
The rheological behaviour of two different loquat juices was studied. Juices containing pectins and pulp exhibited non‐Newtonian with yield stress behavior. Juices from which pectins and pulp were removed exhibited Newtonian behavior. The Bingham model described the relationship between shear stress and shear rate for the first type of juice and the Newtonian model described the second type. The effect of temperature on the Bingham plastic viscosity and the Newtonian viscosity was described by Arrhenius equation. The effect of soluble solids contents was described by power‐law and exponential expressions. Finally, two equations that described the combined effect of temperature and concentration were developed.