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Milk Whey Protein

Milk Whey Protein Standard

v 2.0 | Effective 07/03/2023

Product Definition

Milk Whey Protein is obtained from bovine milk or skim milk by the removal of casein and non-protein constituents from milk so that the finished dry product contains not less than 25% protein.  It is obtained by microfiltration and/or chromatography of milk or skim milk and may be preceded or followed by ultrafiltration, nanofiltration, evaporation, dialysis, or any other safe and suitable process in which all or part of the lactose, minerals and moisture may be removed.

Milk Whey Protein cannot be produced through any process or combination of processes that include enzymatic coagulation of protein and/or acid precipitation of protein in bovine milk or skim milk.

Milk Whey Protein products with a protein content less than 89.5% are referred to as Milk Whey Protein Concentrates (mWPC).

Milk Whey Protein products with a protein content greater than or equal to 89.5% on a dry matter basis are referred to as Milk Whey Protein Isolates (mWPI).

Milk Whey Protein complies with all provisions of the U.S. Federal Food, Drug, and Cosmetic Act.

Standard: Printable PDF
Parameter Units of Measure mWPC 34 mWPC 80 mWPI
Protein (1) %, as-is basis 33.5 minimum 79.5 minimum (1) 89.5 minimum (1)
Fat %, as-is basis 2.0 maximum 2.0 maximum 1.5 maximum
Lactose %, as-is basis 55.0 maximum 13.0 maximum 4.0 maximum
Moisture %, as-is basis 6.0 maximum 6.0 maximum 6.0 maximum
Ash %, as-is basis 7.5 maximum 5.0 maximum 4.5 maximum

(1) For mWPC 80 and mWPI the protein content and limit are on the dry basis instead of the as-is basis.

Other Characteristics
Physico-chemical Properties
Parameter Units of Measure Limits
Scorched particles mg/25g 15.0 maximum
Color visual cream
Flavor sensory bland, clean
Microbiological Analysis
Parameter Units of Measure Limits
Standard Plate Count CFU/g 30,000 maximum
Yeast and Mold CFU/g 10 maximum
Coliforms (2) CFU/g 10 maximum
Enterobacteriaceae (2) CFU/g 10 maximum
Salmonella CFU/sample (3) not detected
Listeria genus CFU/g not detected

(2) The food industry is trending toward Enterobacteriaceae (“EB”) as the most commonly used category of indicator organisms for gauging general process sanitation.  For compliance with this Standard, either coliforms and/or EB shall be utilized, at the discretion of the manufacturer.

(3) Typical minimum sample size for Salmonella testing is 25 g, but the exact sample size and methodology is left to the discretion of the manufacturer.

Methods of Analysis
Parameter Reference Method
Protein SMEDP 15.132
Fat AOAC 989.05
Lactose SMEDP 15.092
Moisture AOAC 927.05
Ash AOAC 900.02
Scorched particles ADPI
Standard plate count AOAC 966.23
Coliforms AOAC 989.10
All other microbiological tests FDA BAM
Product Labeling

Recommended identifications:
Milk Whey Protein

Milk Whey Protein Concentrate (___% protein): where the % protein is either declared in 5% increments; or declared as the actual percentage4 (e.g., mWPC 25); or optionally the % protein may be omitted entirely (only when the % protein is ≥ 79.5%).

Milk Whey Protein Isolate (___% protein): where the % protein is either declared in 2% increments; or declared as the actual percentage4 (e.g., mWPI 92); or optionally the % protein may be omitted entirely.

(4)  When electing to incorporate the actual percentage protein content into the product identification, the supporting analysis for the protein content must also be supplied.

Alternative identifications:
Native Whey Protein
Milk Derived Whey Protein
Milk Soluble Protein

Milk Whey Protein is typically used as a protein supplement in general sports, adult, or medical nutrition; and for its functionality such as in yogurts and puddings (gelation), toppings and fillings (whipping), meat and sausage (water binding), ice cream, margarine, and mayonnaise (emulsification); and others.

Product should be stored, shipped, and utilized according to the manufacturer’s established recommendations.  As guidance, product should be stored and shipped in a cool, dry environment with temperature below 80°F and relative humidity below 65%.  Stocks should be rotated and utilized in accordance with the manufacturer’s established date of expiration or retest.

Multiwall kraft bags with polyolefin inner liner, or other suitable closed containers (e.g., totes) are typical.

Additional Resources

Additional resources including the Dried Dairy Ingredients Handbook and more are available for ADPI members. Click the button to log-in to access these resources.

In no event shall ADPI be liable for any direct, indirect, incidental, special, exemplary, or consequential damages (including, but not limited to: the need to procure substitute goods or services; loss of use, data, or profits; or business interruption) however caused and on any theory of liability, whether in contract, strict liability, or tort (including negligence or otherwise) arising in any way out of the publication, use of, or reliance upon any standard, even if advised of the possibility of such damage and regardless of whether such damage was foreseeable.



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