Abstract
The influence of operating pressure during osmotic dehydration on mass transfer and mechanical properties in pineapple fruits was analyzed. Dehydration trials were performed at atmospheric pressure (OD) and by applying a vacuum pulse (VPOD), in sucrose solution at 60°Brix and 40°C for 300 min. Seven operation conditions were implemented with a vacuum pulse of 100 mbar or 250 mbar for 0, 5, 15 or 25 min at the beginning of the process. The decrease of pressure favored the solute uptake, but the water loss has not been significantly affected. No significant effect of vacuum time was observed. However, solute uptake in trials with vacuum pulse of 100 mbar was significantly higher than in OD process. In general, mechanical properties and shrinkage were not affected by operation conditions. Osmotic dehydration process (both OD and VPOD) originates a more resistant tissue structure than the one in fresh pineapple fruit.
References
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©2013 by Walter de Gruyter Berlin / Boston
Articles in the same Issue
- Masthead
- Masthead
- Drying Kinetics, Biochemical and Functional Properties of Products in Convective Drying ofAnchovy (Engraulis anchoita) Fillets
- A Rheological Model for Cupuassu (Theobroma grandiflorum) Pulp at Different Concentrations and Temperatures
- Pear Drying: Thermodynamics Studies and Coefficients of Convective Heat and Mass Transfer
- Evaluation of Thin-Layer Drying Models and Artificial Neural Networks for Describing Drying Kinetics of Canola Seed in a Heat Pump Assisted Fluidized Bed Dryer
- Relating Rice Grain Quality to Conditions during Sun Drying
- Modeling of Basil Leaves Drying by GA–ANN
- Effect of Pulsed Vacuum Treatment on Mass Transfer and Mechanical Properties during Osmotic Dehydration of Pineapple Slices
- Raw Glycerol as Substrate for the Production of Yeast Biomass
- Effect of Aminoethoxyvinylglycine and Methyl Jasmonate on Individual Phenolics and Post-harvest Fruit Quality of Three Different Japanese Plums (Prunussalicina Lindell)
- Process Optimization for Foam Mat-Tray Drying of Passiflora edulis Flavicarpa Pulp and Characterization of the Dried Powder
- Evaluation of the Freezing and Thawing Cryoconcentration Process on Bioactive Compounds Present in Banana Juice from Three Different Cultivars
- Effects of Defatted Flaxseed Addition on Rheological Properties of Wheat Flour Slurry
- Disease Identification and Grading of Pomegranate Leaves Using Image Processing and Fuzzy Logic
- Calculation of the Effective Diffusion Coefficients in Drying of Chemical and Mechanical Pretreated Rosehip Fruits (Rosa eglanteria L.) with Selected Mass Transfer Models
- Assessment of the Physico-mechanical, Chemical and Colour Characteristics of Potatoes Depending on Tuber Size and Cultivar
- Moisture Sorption Characteristics of Dakuwa (Nigerian Cereal/Groundnut Snack)
- A New Alternative Real-Time Method to Monitoring Dough Behavior during Processing Using Wireless Sensor Technology
Articles in the same Issue
- Masthead
- Masthead
- Drying Kinetics, Biochemical and Functional Properties of Products in Convective Drying ofAnchovy (Engraulis anchoita) Fillets
- A Rheological Model for Cupuassu (Theobroma grandiflorum) Pulp at Different Concentrations and Temperatures
- Pear Drying: Thermodynamics Studies and Coefficients of Convective Heat and Mass Transfer
- Evaluation of Thin-Layer Drying Models and Artificial Neural Networks for Describing Drying Kinetics of Canola Seed in a Heat Pump Assisted Fluidized Bed Dryer
- Relating Rice Grain Quality to Conditions during Sun Drying
- Modeling of Basil Leaves Drying by GA–ANN
- Effect of Pulsed Vacuum Treatment on Mass Transfer and Mechanical Properties during Osmotic Dehydration of Pineapple Slices
- Raw Glycerol as Substrate for the Production of Yeast Biomass
- Effect of Aminoethoxyvinylglycine and Methyl Jasmonate on Individual Phenolics and Post-harvest Fruit Quality of Three Different Japanese Plums (Prunussalicina Lindell)
- Process Optimization for Foam Mat-Tray Drying of Passiflora edulis Flavicarpa Pulp and Characterization of the Dried Powder
- Evaluation of the Freezing and Thawing Cryoconcentration Process on Bioactive Compounds Present in Banana Juice from Three Different Cultivars
- Effects of Defatted Flaxseed Addition on Rheological Properties of Wheat Flour Slurry
- Disease Identification and Grading of Pomegranate Leaves Using Image Processing and Fuzzy Logic
- Calculation of the Effective Diffusion Coefficients in Drying of Chemical and Mechanical Pretreated Rosehip Fruits (Rosa eglanteria L.) with Selected Mass Transfer Models
- Assessment of the Physico-mechanical, Chemical and Colour Characteristics of Potatoes Depending on Tuber Size and Cultivar
- Moisture Sorption Characteristics of Dakuwa (Nigerian Cereal/Groundnut Snack)
- A New Alternative Real-Time Method to Monitoring Dough Behavior during Processing Using Wireless Sensor Technology