Density of juice and fruit puree as a function of soluble solids content and temperature

Abstract A study of the effect of temperature and concentration of soluble solids on density of depectined and clarified peach juice and orange juice and a study of the effect of the temperature on density of apple and quince purees are reported. The densities of the peach and orange juices were determined at concentrations of between 10 and 60 °Brix and temperatures of between 0 and 80 °C. The densities of the apple and quince purees were determined within the same range of temperatures. For peach and orange juices the results were analyzed to obtain this property as a function of temperature and concentration and an equation describing the combined effect on density was proposed. For apple and quince purees the results were analyzed as a function of temperature and an equation describing this effect on density was proposed. All equations described were statistically significant at a confidence level of 95%.

[1]  W. Horwitz The variability of AOAC methods of analysis as used in analytical pharmaceutical chemistry. , 1977, Journal - Association of Official Analytical Chemists.

[2]  R. D. Carter,et al.  Viscosity changes in orange juice after ultrafiltration and evaporation , 1995 .

[3]  A. Ibarz,et al.  Rheology of clarified fruit juices. II: Blackcurrant juices , 1992 .

[4]  G. D. Saravacos,et al.  Transport properties in processing of fruits and vegetables , 1995 .

[5]  L. Bayındırlı DENSITY and VISCOSITY of GRAPE JUICE AS A FUNCTION of CONCENTRATION and TEMPERATURE , 1993 .

[6]  Jorge E. Lozano,et al.  Thermophysical Properties of Clarified Apple Juice as a Function of Concentration and Temperature , 1989 .

[7]  M. A. Rao,et al.  Flow properties of concentrated juices at low temperatures. , 1984 .

[8]  W. Horwitz Official Methods of Analysis , 1980 .

[9]  E. Costell,et al.  RHEOLOGY OF APRICOT PUREE: CHARACTERIZATION OF FLOW , 1982 .

[10]  L. Bayındırlı Mathematical analysis of variation of density and viscosity of apple juice with temperature and concentration , 1992 .

[11]  Syed E. Hasan,et al.  Thermophysical Properties Of Rocks , 1978 .

[12]  Joaquín Giner,et al.  Evolución del color, azúcares y HMF en el tratamiento térmico de zumo de manzana/Colour, sugars and HMF evolution during thermal treatment of apple juice , 1996 .

[13]  A. Ibarz,et al.  Variation with temperature and soluble solids concentration of the density of a depectinised and clarified pear juice , 1989 .