What’s the difference between gelatin, hydrolyzed collagen, and collagen peptides?
Is hydrolyzed collagen the same as collagen peptides? How do they relate to gelatin? What are the key differences among them? Let me clarify this for you in just a minute.
The properties of raw materials:
Gelatin
Gelatin is usually light yellow or colorless and clear. Its color can change slightly based on its source and how it is processed. You can find gelatin in powder, granule, or sheet form. It has the ability to form a solid gel when mixed with liquid.
Source:
Gelatin comes from the skin, bones, and connective tissues of animals.
This process is called partial hydrolysis. Common sources include the skins, bones, tendons, ligaments, and scales of animals like cattle, pigs, sheep, and fish. These animals are inspected in slaughterhouses, meatpacking plants, canneries, and markets. Gelatin can also be made from leftover pieces of hides, split hides, and clean bone scraps from bone processing factories, as well as naturally dried bone materials.
Properties: Gelatin is a macromolecular protein known for its gelling properties. It is commonly used in food, pharmaceuticals, and cosmetics, primarily as a thickener and gelling agent.
Hydrolyzed Collagen:
Hydrolyzed collagen typically appears as a fine powder, ranging from light yellow to pale white, and is lighter in color than gelatin. When dissolved, it becomes completely transparent and does not possess gelling properties.
Source:
Hydrolyzed collagen is created by further hydrolyzing gelatin, which breaks its molecular chains into smaller peptide chains. The raw materials for hydrolyzed collagen are sourced from edible or pharmaceutical gelatin production facilities registered with relevant government authorities. This is why hydrolyzed collagen is often referred to as “hydrolyzed gelatin.”
Properties:
Hydrolyzed collagen is more soluble in water than gelatin, although it still has a relatively large molecular weight. This makes it suitable for use in skincare and health products.
Collagen Peptide:
Collagen peptides typically appear pale yellow or nearly white, making them lighter in color than hydrolyzed collagen. They are commonly available in an ultra-fine powder or granule form, boasting excellent solubility, and dissolve into a clear, colorless solution without any gelling properties.
Source:
To produce smaller peptide molecules, collagen peptides are derived from the further hydrolysis of hydrolyzed collagen. The raw materials used for collagen peptide production include those used for gelatin, as well as edible aquatic sources such as fish swim bladders, echinoderms, and jellyfish.
Properties:
With the smallest molecular weight and the highest absorption rate, collagen peptides are primarily utilized in premium health supplements and sports nutrition products, contributing to body repair and skin health.
Application
| Molecular Weight | Gelling Ability | |
|---|---|---|
| Gelatin | 100,000 Da | Strong |
| Hydrolyzed Collagen | 500-20,000 Da | Barely |
| Collagen Peptide | 100-10,000 Da | None |
(Da: Dalton; the above molecular weights are approximate)
Gelling strength is clearly positively correlated with molecular weight. Both gelling strength and viscosity serve as key indicators for gelatin’s applications, making it widely used as a thickener, gelling agent, and stabilizer in the food industry, particularly in products like candies, jellies, and ice cream.
In contrast, hydrolyzed collagen has undergone further hydrolysis, resulting in a loss of gelling strength and, consequently, gelling properties. This characteristic makes hydrolyzed collagen more suitable for use in beverages and health products, as it provides easily digestible and absorbable protein.
Collagen peptides, characterized by their small molecular weight and high absorption rate, primarily exist in the form of bioactive peptides. They are commonly utilized in health supplements and beauty products, highlighting their benefits for skin, joint, and bone health.