Whey Protein Isolate
Whey Protein Isolate WPI 90 is a high-protein dairy ingredient derived from whey, with a protein content of at least 90% on a dry matter basis. It is characterized by low lactose and fat content, high solubility and a favorable amino acid profile. It is commonly supplied as a fine powder and used to enrich food products with protein while improving texture, stability and nutritional value.
Source
WPI 90 is produced from liquid whey generated during cheese production. Following separation, pasteurization and filtration, the protein fraction is concentrated through membrane processes, typically ultrafiltration and additional purification. The resulting material is then spray-dried into a stable powder.
The ingredient naturally contains whey proteins such as beta-lactoglobulin, alpha-lactalbumin, immunoglobulins and lactoferrin. Due to its high degree of filtration, WPI 90 contains substantially less lactose and fat than whey protein concentrates.
Variations
Whey protein isolate is available in several technological variations:
- standard or instantized powder with improved dispersibility
- products with different levels of lactose, fat and mineral content
- variants designed for neutral beverages, acidic systems or heat-treated products
- packaging in 20 kg bags, 25 kg bags or bulk formats for industrial use
Depending on the supplier and intended application, the product may be certified Halal, Kosher, Non-GMO, Organic and Gluten free.
Applications In The Food Industry
Sports Nutrition And Protein Beverage Industry
Whey Protein Isolate WPI 90 is used in protein powders, instant beverages, ready-to-drink protein drinks and functional nutrition formulations. Its high protein content supports products with reduced carbohydrate and fat content, while its good solubility contributes to a smooth beverage texture.
Dairy Industry
In high-protein yogurts, dairy desserts, puddings, ice cream and fermented dairy beverages, WPI 90 increases protein content and contributes to a fuller mouthfeel. It can also improve water binding, structural stability and product consistency.
Bakery Industry
In protein-enriched bakery products, bread, biscuits, cakes and functional baked goods, whey protein isolate increases protein content and supports nutritional positioning. It may influence crust color, baked flavor and dough structure, so dosage should be adjusted to the recipe and processing conditions.
Confectionery Industry
WPI 90 is used in protein bars, creams, fillings, aerated desserts and high-protein confectionery products. It contributes to structure formation, foam stability and a creamy texture, while enabling the development of products with elevated protein content.
Benefits Of Use
- High protein content, at least 90% on a dry matter basis.
- Low lactose and fat content compared with whey protein concentrates.
- Good solubility and suitability for powdered, liquid and aerated formulations.
- Favorable amino acid profile and high nutritional value of whey proteins.
- Supports the development of high-protein, functional and sports nutrition products.
- Provides technological benefits related to texture, stability, water binding and sensory quality of finished products.
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