Whey Protein Isolate (WPI)

Синонимы: Whey Protein Isolate, WPI, Isolated Whey Protein, Whey Isolate, Milk Whey Protein Isolate

Whey protein isolate has moved from a niche sports nutrition ingredient to a staple in mainstream functional foods and clinical nutrition. Its high protein density, low lactose, and neutral taste make it a preferred choice for formulators targeting clean-label, high-protein products.

WPI is produced by processing whey, the liquid co-product of cheese making, through a series of filtration steps—typically microfiltration and ultrafiltration—that remove most of the fat, lactose, and minerals. The result is a protein fraction that is over 90% protein on a dry basis, with a balanced amino acid profile rich in branched-chain amino acids (BCAAs).

Commercial WPI comes in two main grades: instantized for cold-water dispersion and regular for general use. Both are standardized to protein content, with specifications for moisture, ash, and microbiological quality to suit applications from ready-to-drink beverages to protein bars and medical nutrition.

Product Overview & Composition

Whey protein isolate consists primarily of β-lactoglobulin and α-lactalbumin, along with smaller amounts of immunoglobulins, bovine serum albumin, and lactoferrin. The filtration process concentrates these proteins while reducing lactose to typically less than 1% and fat to below 0.5%.

This composition gives WPI a high biological value and a clean sensory profile, making it easy to incorporate into neutral or lightly flavored systems. It also dissolves well, especially instantized grades, which minimizes foaming and improves mouthfeel in beverages.

Key Applications

• Sports nutrition: Protein powders, RTDs, and recovery drinks where fast absorption and high BCAA content are desired.
• Clinical nutrition: Enteral formulas and high-protein supplements for patients with increased protein needs or lactose intolerance.
• Functional foods: Protein-enriched snacks, bars, and beverages with clean-label positioning.
• Infant nutrition: As a protein source in specialized formulas, though typically in hydrolyzed or modified forms.
• Nutraceuticals: Tablets and capsules for protein supplementation.

Quality & Standards

Packaging & Supply

• Packaging: 20 kg or 25 kg multi-wall bags with polyethylene liner, or as per customer request.
• MOQ: 500 kg.
• Срок выполнения заказа: 3–5 рабочих дней (товары, имеющиеся в наличии)
• Documentation: COA, MSDS, TDS, and nutritional analysis available upon request.

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