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Frozen mirabelle plum drying: Kinetics, modelling and impact on biochemical properties

Paper ID Volume ID Publish Year Pages File Format Full-Text
19391 43062 2011 11 PDF Available
Title
Frozen mirabelle plum drying: Kinetics, modelling and impact on biochemical properties
Abstract

The aim of this research was to study and model the kinetics of the hot air drying of frozen mirabelle plums. Effects of temperature (50–85 °C), air velocity (0.6–1.2 m/s) and a pre-treatment (ascorbic acid + sucrose-saturated solution) were investigated. The sorption isotherm and heat of sorption of mirabelle plum were mathematically described respectively by the Guggenheim, Anderson and de Boer (GAB) model and a new one. Depending on temperature and air velocities, the effective diffusivity and the energy of activation were respectively in the range of 8–16.8 × 10−10 m2 s−1 and 43.7–55.14 kJ mol−1. To establish the model best adapted to describe this process the fit quality of five models (Newton, page, modified page, logarithmic and diffusion) were evaluated and compared. The diffusion model led to low values of reduced χ-square, mean square root and mean relative deviation modulus with the highest linear regression coefficient. This model was validated in a large range of operating conditions and represents an excellent tool to predict the duration of this process. The pre-treatment preserves biochemical properties of the dried mirabelle plums (reducing sugar content, total phenolic compounds and anti-oxidant activity).

Keywords
Frozen mirabelle plums; Drying kinetics; Modelling; Effective diffusivity
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Frozen mirabelle plum drying: Kinetics, modelling and impact on biochemical properties
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Publisher
Database: Elsevier - ScienceDirect
Journal: Food and Bioproducts Processing - Volume 89, Issue 4, October 2011, Pages 438–448
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Bioengineering
Get Full-Text Now
Don't Miss Today's Special Offer
Price was $35.95
You save - $31
Price after discount Only $4.95
100% Money Back Guarantee
Full-text PDF Download
Online Support
Any Questions? feel free to contact us