How Collagen Is Made: Inside the Collagen Manufacturing Process

What Is Collagen

Collagen is the most abundant protein in the body — making up skin, tendons, cartilage, and connective tissue.
Commercially, collagen supplements are made from animal or marine byproducts (like bovine hides, fish scales, or chicken sternum cartilage). These raw materials are processed to extract, purify, and hydrolyze the collagen into a bioavailable form called collagen peptides (or hydrolyzed collagen).

Step-by-Step: How Collagen Is Manufactured

1. Raw Material Sourcing

• Bovine collagen: Derived from cow hides and bones (most common).
• Marine collagen: From fish skin, scales, or bones — preferred in beauty supplements.
• Avian collagen: From chicken cartilage (rich in Type II collagen for joint support).
• These materials are sourced from GMP-verified, food-grade suppliers to ensure traceability and safety.

Note: High-quality manufacturers use byproducts from USDA- or EU-approved facilities to maintain ethical and safety standards.

2. Cleaning and Pre-Treatment

Raw hides or scales are cleaned thoroughly to remove fat, hair, and non-collagen proteins.
Common steps include:

• Alkaline or acid soaking: To break down cross-linked proteins.
• Enzymatic pre-digestion: To gently loosen collagen fibers without denaturing them.

This prepares the raw material for efficient collagen extraction.

3. Extraction

The cleaned materials are heated in water (or enzymatic solutions) to extract the collagen.

• Temperature: 60–90°C (140–194°F)
• Time: Several hours to separate collagen proteins from the solid tissue.
• The result is a collagen-rich solution, which is then filtered to remove impurities.

At this stage, it’s still gelatin — long-chain collagen molecules not yet hydrolyzed.

4. Hydrolysis (Making Collagen Peptides)

To improve absorption, collagen undergoes enzymatic hydrolysis — breaking the long protein chains into smaller peptides.

• Specific food-grade enzymes are added.
• This process reduces molecular weight to ~2–5 kDa.
• The smaller peptides dissolve easily in water and are more bioavailable.

Result: Hydrolyzed collagen — the form used in most modern supplements.

5. Filtration and Concentration

The hydrolyzed collagen solution is passed through:

• Microfiltration / ultrafiltration: Removes remaining impurities and concentrates the protein.
• Activated carbon filtration: Improves color and removes odor.

This produces a clean, neutral-tasting liquid concentrate.

6. Drying

The purified liquid is converted into a powder through:

• Spray drying: The liquid is atomized into fine droplets and exposed to hot air, instantly drying into powder.
• Freeze drying (less common): Used for high-purity collagen with minimal heat exposure.

Result: A free-flowing, white to off-white powder ready for blending or encapsulation.

7. Blending and Flavoring (Optional)

Depending on the final product type:

• Unflavored collagen peptides go straight to packaging.
• Flavored blends (like vanilla or berry) are mixed with natural flavors, sweeteners, and vitamins (e.g., Vitamin C for collagen synthesis).

At NutraSeller or similar manufacturers, this blending happens in GMP-certified cleanrooms using ribbon or V-blenders for even distribution.

8. Packaging and QC Testing

Before shipment, the finished collagen is tested and packaged:

• QC tests include:
  • Identity (protein fingerprinting)
  • Heavy metals (Pb, Cd, As, Hg)
  • Microbial counts (TPC, Yeast, Mold, E. coli, Salmonella)
  • Moisture and solubility
• Once cleared, it’s filled into pouches, jars, stick packs, or capsules depending on the client order.

Forms of Collagen Supplements

Pro Tip for Supplement Brands

If you’re launching a collagen supplement:

• Choose source intentionally: Marine collagen markets better for beauty; bovine for fitness or general wellness.
• Add synergistic ingredients: Vitamin C, hyaluronic acid, biotin, zinc, or ceramides enhance marketing and efficacy.
• Check out NutraSeller’s private label collagen options