Drying Performance and Product Quality of Sliced Carrots by Infrared Blanching Followed by Different Drying Methods
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Bengang Wu
Abstract
The objective of this study was to investigate the processing parameters and quality of carrots under sequential infrared (IR) dry-blanching and (1) hot air drying (IRB-HAD), (2) infrared drying (IRB-IRD), and (3) Infrared-hot air drying (IRB-IRHAD). Water blanching at 90oC was used for comparison. The quality of dried carrot was evaluated based on vitamin C content, rehydration ratio, color, shrinkage and hardness. Applying IR dry-blanching for 15 min resulted in the reductions of about one log in peroxidase (POD) activities and 54 % in moisture reduction. A notable change in the surface color and retention of vitamin C were obtained with IR blanching. IRB-IRD and IRB-IRHAD had higher drying rates and higher quality. The recommended processing parameters for IRB-IRHAD are IR blanching for 15 min, followed by IR drying to a moisture content of 30–40 % wet basis (w.b.), and then finished by HA drying to a targeted MC (8 % w.b.).
Acknowledgements
The authors wish to thank for the supports received from program (BK20150500; BK20170538) of Youth Natural Science Fund of Jiangsu Province, National Key Research and Development Program of China (2018YFD0700100、2017YFE0105300、2017YFD0400903), and grant (15JDG070) of Senior Professional Research Start-up Fund of Jiangsu University.
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Articles in the same Issue
- Immobilized enzymolysis of corn gluten meal under triple-frequency ultrasound
- The Effect of Solution Properties on the Photochemical Ability of Pulsed Light to Inactivate Soybean Lipoxygenase
- Batter Rheology and Quality of Sponge Cake Enriched with High Percentage of Resistant Starch (Hi-maize)
- Development of a Novel Kinetic Model for Cocoa Fermentation Applying the Evolutionary Optimization Approach
- Drying Performance and Product Quality of Sliced Carrots by Infrared Blanching Followed by Different Drying Methods
- Influence of Moisture Content on Physicomechanical Properties, Starch-Protein Microstructure and Fractal Parameter of Oat Groats
- Effect of Sodium Chloride and Processing Methods on Protein Aggregation, Physical-Chemical and Rheological Properties of Pork Batters
- Modeling of Dielectric and Thermal Properties of Protein-Enriched Instant Noodles as a Function of Food Chemical Composition
- Impact of Temperature, Gum Arabic and Carboxymethyl Cellulose on Some Physical Properties of Spray-Dried Grapefruit
- Effects of Chickpea-Based Leavening Extract on Physical, Textural and Sensory Properties of White Wheat Bread