How Is Protein Powder Made?

Whey and pea protein powders are commonly made by separating and concentrating protein from milk or peas, then drying it. The resulting ingredient may be sold on its own or blended with other ingredients. ^{1, 2, 3}

Understanding those stages helps you ask two useful questions: where does the protein come from, and what else is in the product I buy?

Commercial disclosure: Amaris Mint® sells BioBoost Balance+ Protein™, discussed below.

Two production routes, side by side

This is a general ingredient-process comparison based on Tetra Pak and Roquette, not a diagram of BioBoost production. Manufacturing in Sweden does not identify the origin or production route of every ingredient.¹²³

What is protein powder made of?

Whey and casein come from milk. Pea protein comes from peas. These names identify the source of the protein ingredient. ^{1, 3}

The finished product can be a broader recipe. Its ingredient list tells you whether it contains one protein source, a combination, or other ingredients alongside the protein. Think of the protein ingredient as one component of the product, just as flour is one component of a loaf.

This distinction matters when you compare products. A description of the raw protein ingredient does not tell you everything about the finished serving.

How is whey protein powder made?

1. Start with milk

A common starting point is the liquid whey separated from curds during cheesemaking. Manufacturers can also obtain whey proteins directly from milk through membrane filtration. These are different routes to a milk-derived ingredient. ¹

2. Concentrate the protein

Membrane filtration can retain proteins while allowing water and smaller components, including lactose, to pass through. Further processing changes the proportions of protein, lactose, fat and minerals. Concentrates and isolates therefore have different compositions. ¹

For a closer comparison, read our guide to whey concentrate and isolate.

3. Remove water and dry

The liquid is usually concentrated before drying. In spray drying, it becomes a fine mist inside a stream of heated air. Water evaporates from the droplets, leaving powder particles that are collected. Manufacturers control the process to achieve properties such as moisture content and how readily the powder mixes. ²

4. Create the finished recipe

The dried ingredient can be used in a mixture. Depending on the formula, the finished product may include flavours, other protein ingredients, vitamins or minerals. Some ingredients can also be introduced before drying. The sequence varies, so a general manufacturing guide cannot establish how every individual blend is produced. ^{2, 5}

How is pea protein powder made?

Pea protein follows a different starting route. Roquette describes a process at its Manitoba facility in which dry peas are ground, mixed with water and separated using centrifuges. This separates protein from much of the starch and fibre. Water is then removed, including through spray drying. ³

That is one manufacturer's process, rather than a universal recipe for every plant protein. It also explains why pea protein powder and a serving of whole peas are different foods. For a closer look at dry and wet fractionation, read how pea protein powder is made. For the everyday comparison, explore protein powder versus food.

What manufacturing information tells you

Look for information that answers a specific question. The following distinctions help you make sense of a product page without needing to become a food scientist.

FSSC 22000 is a certification scheme for food safety management systems. Licensed certification bodies audit organisations against its requirements. Its scope concerns how food safety is managed. ⁴

A useful distinction follows from that scope: certification alone does not demonstrate that a particular formula delivers a particular health benefit. Similarly, a country of manufacture does not, by itself, identify the origin of every ingredient.

When that detail matters to you, ask the brand a precise question. For example: where is the protein ingredient produced, and what documentation is available? Our guide to ingredient transparency in supplements helps you take that conversation further.

Is whey protein powder just dried milk?

No. Making whey protein powder involves separating and concentrating a particular milk protein fraction. Drying milk removes water from a different starting mixture. The names describe different ingredients, even though both begin with milk. ¹

What is documented about BioBoost production

Amaris Mint’s Quality & Standards page describes Swedish manufacturing and the facility’s FSSC 22000 certification scope. Use that product-specific information separately from the general whey and pea manufacturing routes above. Those examples are not a documented tour of BioBoost production.

Its 30+ carefully selected ingredients include whey protein concentrate, bovine collagen, vitamins, minerals, botanicals, fibres, cultures and enzymes. It is clinician-formulated and made in Sweden in an FSSC 22000-certified facility. ⁵

Follow the pack's preparation instructions and recommended daily amount. It contains milk and bovine collagen and is for people aged 16 and over and is not recommended during pregnancy or breastfeeding. Check all ingredient and allergen information before use. ⁵

If you have a medical condition or take prescribed medicines, check supplement use with a healthcare professional. Food supplements are intended to add to your usual diet. ⁶

Explore BioBoost Balance+ Protein™ and its full product information.

Food supplements should complement a varied, balanced diet and healthy lifestyle and should not be used as a substitute for either.

References

1. Tetra Pak: Milk and whey fractionation. Dairy Processing Handbook. Accessed 11 September 2026.
2. Tetra Pak: Milk and whey powdered ingredients. Dairy Processing Handbook. Accessed 11 September 2026.
3. Roquette: Inside Roquette’s Manitoba Pea Protein Facility. Accessed 11 September 2026.
4. Foundation FSSC: FSSC 22000 Food Safety Certification Scheme. Accessed 11 September 2026.
5. Amaris Mint®: BioBoost Balance+ Protein Vanilla. Accessed 11 September 2026.
6. Food Standards Agency: Food supplements guidance. Accessed 11 September 2026.