Skim milk powder is used in animal nutrition feed formulations and dairy processing.
Skim milk powder (SMP) is a versatile, nutrient-dense ingredient derived from pasteurized skimmed milk through the removal of fat and water. It is widely used in both animal nutrition and human food processing due to its long shelf life, high-quality protein content (minimum 34%), and functional properties like emulsification and water binding.
1. Animal Nutrition and Feed Formulations
Skim milk powder is a critical, high-quality ingredient in young animal diets, particularly because of its digestibility and nutrient profile.
Calf Milk Replacers (CMR): SMP is a primary ingredient in calf milk replacers, providing casein which clots in the abomasum, promoting slow nutrient release and improved growth rates.
Piglet and Poultry Feed: Due to its high palatability and digestible amino acids (lysine and methionine), it is used in starter feeds for piglets and chicks to improve nutrient absorption and growth.
Pet Food: It is used as a nutritional supplement in various pet food formulations.
Nutritional Advantages: It provides essential lactose, calcium, and protein, making it an excellent energy source.
2. Dairy and Food Processing
In the food industry, SMP acts as a cost-effective alternative to liquid milk, offering easier storage and transport.
Dairy Products: It is used to standardize the protein content in milk, yogurt, and cheese, improving yield and texture. In ice cream, it improves body, texture, and prevents large ice crystal formation.
Bakery: SMP enhances dough structure, adds moisture, and creates a golden crust due to Maillard browning.
Confectionery & Chocolate: It provides a creamy texture in chocolate and prevents sugar crystallization in caramels.
Instant Mixes & Soups: It is used in soups, sauces, and beverages to provide a creamy, rich mouthfeel and to enhance emulsification.
3. Key Characteristics and Types
Heat Treatments: SMP is categorized by heat treatment (Low, Medium, or High Heat), which affects its solubility and functionality. Low-heat is preferred for cheese; high-heat is suited for bakery and confectionery.
Composition: Typically contains less than 1.5% fat, 50-52% lactose, and 34-37% protein.
Shelf Life: It can be stored for 18–24 months in cool, dry conditions.
Skim milk powder is also sometimes used in humanitarian aid scenarios to provide a nutritious substitute for liquid milk.
