Increase of mass transfer rates during osmotic dehydration of apples by application of moderate electric field
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Aline Fronza
Abstract
Osmotic dehydration (OD) is a drying process that consists in placing the food in contact with concentrated solutions of soluble solids to reduce its water activity. The use of moderate electric field (MEF) may promote increase of the mass transfer rates due to the non-thermal effects of electroporation and permeabilization of the cells. In this context, the objective of this study was to investigate the mass transfer process kinetics during apples OD assisted by MEF, evaluating the non-thermal effects of this emerging technology. The experiments were conducted with sucrose solutions (40, 50 and 60%, m/m) at 40 °C. Samples were submitted to electrical field strength (0, 5.5 and 11.0 Vcm−1), according to an experimental design. Results indicated that the application of MEF favoured water loss and solid gain. The effective mass diffusivities of water and solids increased as voltage applied increases. Moreover, MEF negatively influenced color and reducing capacity of the samples.
Author contribution: All the authors have accepted responsibility for the entire content of this submitted manuscript and approved submission.
Research funding: None declared.
Conflict of interest statement: The authors declare no conflicts of interest regarding this article.
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Articles in the same Issue
- Frontmatter
- Articles
- Effect of enzymatic hydrolysis on the formation and structural properties of peanut protein gels
- Effect of varietal differences on the oral processing behavior and bolus properties of cooked rice
- Investigation of nitrogen purging prior to UV treatment on quality of milk
- Increase of mass transfer rates during osmotic dehydration of apples by application of moderate electric field
- Mathematical model of high-temperature tube-shaped pasta drying in a conveyer belt drier
- Effects of pulsed electric fields on sour cherry juice properties and formations of furfural and hydroxymethylfurfural
- Physicochemical analysis, proteolysis activity and exopolysaccharides production of herbal yogurt fortified with plant extracts
- Effects of amount of added water on red yeast rice production using Korean soft rice variety “Hangaru”
Articles in the same Issue
- Frontmatter
- Articles
- Effect of enzymatic hydrolysis on the formation and structural properties of peanut protein gels
- Effect of varietal differences on the oral processing behavior and bolus properties of cooked rice
- Investigation of nitrogen purging prior to UV treatment on quality of milk
- Increase of mass transfer rates during osmotic dehydration of apples by application of moderate electric field
- Mathematical model of high-temperature tube-shaped pasta drying in a conveyer belt drier
- Effects of pulsed electric fields on sour cherry juice properties and formations of furfural and hydroxymethylfurfural
- Physicochemical analysis, proteolysis activity and exopolysaccharides production of herbal yogurt fortified with plant extracts
- Effects of amount of added water on red yeast rice production using Korean soft rice variety “Hangaru”
