Whey Protein Isolate (WPI)

同義語： 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.

製品の概要と成分

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.

主な用途

• スポーツ栄養学: 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.
• ニュートラシューティカルズ: Tablets and capsules for protein supplementation.

品質と基準

包装・供給

• パッケージ: 20 kg or 25 kg multi-wall bags with polyethylene liner, or as per customer request.
• 最小注文数量（MOQ）: 500 kg.
• リードタイム: 3～5営業日（在庫品）
• ドキュメント: COA, MSDS, TDS, and nutritional analysis available upon request.

見積依頼

• リブバイオ株式会社. — メールアドレス： info@lyvbio.com