Learning Objectives
5 objectives- Understand the fundamental concepts and processes involved in dairy plant technology.
- Analyze the composition and properties of milk and their influence on dairy processing.
- Identify and explain the functions of key dairy processing equipment.
- Describe the methods and importance of pasteurization and homogenization in dairy production.
- Evaluate quality control measures and waste management strategies in dairy plants.
Content Outline
PreviewUnit 3800: Dairy Plant Technology
1. Overview of Dairy Plant Technology
- Introduction to dairy plant technology
- Milk reception: receiving, testing, and storage
- Milk processing: separation, standardization, and treatment
- Packaging: materials and methods
- Quality control throughout the process
2. Milk Composition and Properties
- Composition of milk
- Water, fat, proteins, lactose, minerals, vitamins
- Physical properties
- Color, viscosity, density, freezing point
- Chemical properties
- pH, acidity, enzymatic activity
- Variations in composition
- Factors affecting composition (breed, feed, lactation stage)
- Impact on processing and product quality
3. Dairy Processing Equipment
- Pasteurizers
- Types (batch, continuous)
- Function and operation
- Homogenizers
- Principle of homogenization
- Equipment types
- Separators
- Cream separation and clarification
- Packaging Machines
- Filling, sealing, labeling
- Maintenance and safety considerations
4. Pasteurization and Homogenization
- Pasteurization
- Objectives and significance
- Methods: Low-Temperature Long Time (LTLT), High-Temperature Short Time (HTST), Ultra-High Temperature (UHT)
- Effect on pathogens and enzymes
- Homogenization
- Purpose: fat globule size reduction
- Process details and equipment
- Impact on texture and shelf-life
5. Dairy Product Manufacturing
- Milk
- Standardization and fortification
- Cheese
- Types of cheese
- Manufacturing steps: coagulation, cutting, cooking, pressing, ripening
- Yogurt
- Starter cultures
- Fermentation process
- Butter
- Cream churning
- Salt addition and packaging
- Ice Cream
- Ingredients and mix preparation
- Freezing and aeration
6. Quality Control in Dairy Plants
- Hygiene practices
- Personal hygiene, equipment sanitation
- Testing procedures
- Microbiological testing
- Chemical and physical tests
- Regulatory requirements
- National and international standards
- Documentation and traceability
7. Packaging and Distribution of Dairy Products
- Packaging materials
- Plastic, glass, cartons, foil
- Packaging techniques
- Aseptic, vacuum, modified atmosphere packaging
- Distribution channels
- Cold chain logistics
- Storage requirements
- Temperature and humidity control
8. Waste Management in Dairy Plants
- Environmental impact of dairy operations
- Types of waste
- Solid, liquid, gaseous wastes
- Waste management strategies
- Treatment of effluents
- Recycling and reuse
- Sustainable practices
- Energy efficiency
- Waste minimization
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