Collagen is a biological macromolecule, a white, opaque, unbranched fibrous protein. It is the main component of animal connective tissues and a functional protein that is abundant and widely distributed in mammals, accounting for 25% to 30% of the total protein content, with some organisms even reaching over 80%.
It enhances collagen activity in the skin, providing moisturizing, anti-aging, beauty, wrinkle reduction, and hair nourishment effects.

Traditional Collagen Extraction Process:
Collagen can be dissolved in various extraction media with different pH levels and concentrations. Based on the extraction medium, collagen extraction can be categorized into five types: hot water extraction, salt extraction, acid extraction, alkali extraction, and enzymatic extraction. The basic principle involves altering the external environment of the protein according to collagen's characteristics to separate it from other proteins. In practical extraction processes, different methods are often combined.

Collagen Membrane Extraction Process:
Enzymatic hydrolysate → Fine filtration → Macromolecule ultrafiltration → Nanofiltration membrane concentration → Spray drying
Advantages of Collagen Membrane Process:
1. Membrane concentration consumes low energy, only 30% of thermal concentration, saving costs for enterprises;
2. Pre-treatment removal of impurities improves collagen quality and taste;
3. During membrane concentration, inorganic salts in the enzymatic hydrolysate are removed, reducing bitterness, fishy odor, and pesticide residues;
4. Shortens the production cycle and enhances production efficiency;
5. Concentration at room temperature minimally affects protein bioactivity.