Artikel
Lizenziert
Nicht lizenziert
Erfordert eine Authentifizierung
Drying Behaviour and Energy Requirement for Dehydration of White Onion Slices
-
Vithhal Revaskar
Veröffentlicht/Copyright:
31. Oktober 2007
White onions were dried using an osmo-convective drying technique. Osmotic dehydration was done by dipping the onion slices in 10, 15 and 20 brix NaCl solution at ambient temperature for one hour. The increase in the concentration of NaCl increased the water loss, solid gain and weight reduction in onion slices. The drying times of pre-osmosed onions slices at drying air temperature of 50, 60 and 70°C were 6.75, 6.00 and 5.25 h respectively. The moisture diffusivity increased with increase in air temperature and ranged between 0.83 and 0.91x10-10 m2/s. Quality of dried product in respect to flavour strength and color was superior. A lowest specific energy consumption of about 1.98 kWh/kg was found in the air drying of onions pre-treated with 20 brix NaCl solution and at air temperature of 70°C.
Keywords: osmotic drying; moisture diffusivity; flavour strength; colour value; specific energy consumption
Published Online: 2007-10-31
©2011 Walter de Gruyter GmbH & Co. KG, Berlin/Boston
Sie haben derzeit keinen Zugang zu diesem Inhalt.
Sie haben derzeit keinen Zugang zu diesem Inhalt.
Artikel in diesem Heft
- Article
- Effect of Moisture Content on the Physical Properties of Fibered Flaxseed
- Sweet Bread Produced by the Lactic Acid Bacteria L. brevis and the Yeast S. cerevisiae
- Application of Desiccant Technology for Concentrating Liquid Foods - Experimental Investigation
- Adsorption Characteristics of Anthocyanins from Purple-fleshed Potato (Solanum tuberosum Jasim) Extract on Macroporous Resins
- A Non-Contact Computer Vision Based Analysis of Color in Foods
- Dynamic Effect in High Pressure Microbe Inactivation
- Study of the Influence of Product and Process Variables in the Salting and Post-salting Stages of PSE Thawed Hams
- Drying Behaviour and Energy Requirement for Dehydration of White Onion Slices
- Moisture Sorption Isotherms of Osmotically Dehydrated Sweet Pepper
- Sensitivity Analysis of a CFD Modelling System for Airflow and Heat Transfer of Fresh Food Packaging: Inlet Air Flow Velocity and Inside-Package Configurations
- Strength and Elastic Properties of Cassava Tuber
- Optimization of Carotenoid Production by Aspergillus Carbonarius in Submerged Fermentation Using a Response Surface Methodology
- Shorter Communication
- The Changes in the Lipid Composition of Mung Bean Seeds as Affected by Processing Methods
- Sorption Isotherms of Granny Smith Apples Hot-Air Dried and Texturized by "Controlled Sudden Decompression to the Vacuum"
- Physicochemical Properties of the Josapine Variety of Pineapple Fruit
- Texture Profile Analysis of Cooked Sun Dried Nuggets (Bori) Prepared with Different Levels of Moisture Content and Percent Air Incorporation in Its Batter
- Proximate Composition of the Apple Seed and Characterization of Its Oil
- Contrasting Temperature Profile Development in Three Domestic Pressure Canners Operated without Venting
- Critical Review
- Influence of Product-entrapped Air and Venting on Lethal Effect in Model Domestic Pressure Canner Studies
Schlagwörter für diesen Artikel
osmotic drying;
moisture diffusivity;
flavour strength;
colour value;
specific energy consumption
Artikel in diesem Heft
- Article
- Effect of Moisture Content on the Physical Properties of Fibered Flaxseed
- Sweet Bread Produced by the Lactic Acid Bacteria L. brevis and the Yeast S. cerevisiae
- Application of Desiccant Technology for Concentrating Liquid Foods - Experimental Investigation
- Adsorption Characteristics of Anthocyanins from Purple-fleshed Potato (Solanum tuberosum Jasim) Extract on Macroporous Resins
- A Non-Contact Computer Vision Based Analysis of Color in Foods
- Dynamic Effect in High Pressure Microbe Inactivation
- Study of the Influence of Product and Process Variables in the Salting and Post-salting Stages of PSE Thawed Hams
- Drying Behaviour and Energy Requirement for Dehydration of White Onion Slices
- Moisture Sorption Isotherms of Osmotically Dehydrated Sweet Pepper
- Sensitivity Analysis of a CFD Modelling System for Airflow and Heat Transfer of Fresh Food Packaging: Inlet Air Flow Velocity and Inside-Package Configurations
- Strength and Elastic Properties of Cassava Tuber
- Optimization of Carotenoid Production by Aspergillus Carbonarius in Submerged Fermentation Using a Response Surface Methodology
- Shorter Communication
- The Changes in the Lipid Composition of Mung Bean Seeds as Affected by Processing Methods
- Sorption Isotherms of Granny Smith Apples Hot-Air Dried and Texturized by "Controlled Sudden Decompression to the Vacuum"
- Physicochemical Properties of the Josapine Variety of Pineapple Fruit
- Texture Profile Analysis of Cooked Sun Dried Nuggets (Bori) Prepared with Different Levels of Moisture Content and Percent Air Incorporation in Its Batter
- Proximate Composition of the Apple Seed and Characterization of Its Oil
- Contrasting Temperature Profile Development in Three Domestic Pressure Canners Operated without Venting
- Critical Review
- Influence of Product-entrapped Air and Venting on Lethal Effect in Model Domestic Pressure Canner Studies
