Effect of high pressure on mass transfer kinetics of granny smith apple

摘要

The mass transfer kinetics during osmotic dehydration of granny smith apple slices in 60 Brix fructose and sucrose solution was studied at atmospheric pressure and at elevated pressure of 200-600MPa at 40 degrees C. The moisture and solute fractions in apple slices during osmotic dehydration under high pressure were predicted by Weibull frequency distribution model. The calculated effective moisture diffusivity values of apple slices suspended in fructose and sucrose solution during high-pressure treatment (0.1-600MPa) were in the range of 6.35x10(-10) to 3.60x10(-9)m(2)/s and 7.96x10(-10) to 4.32x10(-9)m(2)/s, respectively.