Milk Processing and Concentration

What is the main purpose of concentration in milk processing?

What are the two methods used to achieve concentration in milk processing?

What is the result of evaporation in milk processing?

What is the purpose of aseptic packaging in milk processing?

What is the process of removing water from milk to produce a powder?

What is the benefit of concentration in milk processing?

What is the step that connects milk reception and milk processing?

What is the final destination of the milk production process?

What is the purpose of cooling in milk processing?

What is the process of reducing the temperature of milk to very low temperatures?

Milk Processing

Milk processing involves several stages: heat treatment, stabilized tank, filling machine, sterilization, storage, UHT, and aseptic packaging

Concentration

Concentration involves removal of part of the water in milk, skim milk, whey, and other milk products to:
- Diminish volume
- Enhance keeping quality
Methods of concentration:
- Evaporation
- Drying
Evaporation can be done using evaporators
Drying is done to:
- Make a durable product
- Preserve food by preventing growth and activity of micro-organisms
- Reduce weight and bulk of food for cheaper transport and storage
Drying methods:
- Spray drying
- Drum (Roller) drying
Concentration before drying can reduce energy and drier costs

Cooling and Freezing

Cooling and freezing are used to preserve milk
Freezing:
- Causes partial coalescence (clumping) of fat globules in whole milk and cream
- Can be prevented by prior homogenization and rapid freezing
- Lowers water activity and increases osmotic pressure of the remaining liquid
- May cause limited destruction of microorganisms
Rapid freezing is achieved in a scrapped-surface heat exchanger

Aseptic Packaging

Aseptic packaging involves:
- Sterilization of the container
- Filling with a commercially sterile product in an aseptic environment
- Hermetically sealing the container
Aseptic packaging ensures absence of unwanted organisms from the product, package, equipment, or environment

This quiz covers the various stages of milk processing, including heat treatment and sterilization, as well as methods of concentration, such as evaporation and drying. Learn about the importance of concentration in milk products.