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Engineering
Agricultural Engineering
Post-Harvest Technology and Processing
1. Foundations of Post-Harvest Technology
2. Biological and Physiological Principles
3. Causes and Assessment of Post-Harvest Losses
4. Harvesting and Field Handling
5. Preliminary Processing Operations
6. Drying and Dehydration Technology
7. Storage Technology and Management
8. Processing and Value Addition
9. Packaging Technology and Systems
10. Quality Control and Food Safety Management
11. Commodity-Specific Post-Harvest Management
12. Engineering and Economic Considerations
Drying and Dehydration Technology
Fundamental Principles of Drying
Moisture Content Concepts
Wet Basis and Dry Basis Calculations
Equilibrium Moisture Content
Critical Moisture Content
Water Activity Relationships
Water Activity Definition and Measurement
Relationship to Microbial Growth
Sorption Isotherms
Stability Considerations
Heat and Mass Transfer
Drying Mechanisms
Heat Transfer Modes
Mass Transfer Principles
Drying Rate Curves
Psychrometric Properties
Air-Water Vapor Relationships
Humidity Measurements
Drying Air Conditions
Traditional and Solar Drying
Open Sun Drying
Advantages and Limitations
Product Suitability
Quality Considerations
Solar Drying Systems
Direct Solar Dryers
Indirect Solar Dryers
Mixed-Mode Solar Dryers
Solar Collector Design
Natural Air Drying
Ventilation Requirements
Structural Design
Moisture Management
Mechanical Drying Systems
Tray and Cabinet Dryers
Design and Construction
Air Circulation Systems
Temperature Control
Tunnel Dryers
Continuous Operation Principles
Product Handling Systems
Process Control
Rotary Dryers
Design Features
Heat Transfer Mechanisms
Product Movement Patterns
Fluidized Bed Dryers
Fluidization Principles
Bed Design Parameters
Heat and Mass Transfer
Spray Drying Technology
Atomization Methods
Chamber Design
Product Recovery Systems
Drum Drying Systems
Single and Double Drum Designs
Film Formation and Removal
Product Quality Factors
Advanced Drying Technologies
Freeze Drying Processes
Freezing Stage Operations
Primary Drying Phase
Secondary Drying Phase
Equipment Design and Operation
Vacuum Drying Systems
Vacuum Generation and Control
Heat Transfer Under Vacuum
Product Quality Benefits
Microwave and Radio Frequency Drying
Heating Mechanisms
Equipment Design
Process Control Challenges
Osmotic Dehydration
Mass Transfer Principles
Osmotic Solution Management
Combined Drying Processes
Quality Control in Drying
Nutritional Quality Changes
Vitamin and Mineral Losses
Protein and Amino Acid Changes
Antioxidant Retention
Physical Quality Attributes
Color Changes and Browning
Texture and Rehydration Properties
Shrinkage and Case Hardening
Sensory Quality Factors
Flavor and Aroma Changes
Appearance and Visual Quality
Mouthfeel and Texture
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5. Preliminary Processing Operations
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7. Storage Technology and Management