Collagen is a biological macromolecular substance, a white, opaque, and non-branched fibrous protein. It is the main component of animal connective tissues and is also a functional protein with a relatively high content and wide distribution in mammals, accounting for 25% to 30% of the total protein content. In some organisms, it can even reach over 80%. It has the effect of enhancing the activity of collagen in the skin, moisturizing the skin, delaying aging, beautifying, reducing wrinkles, and promoting hair growth. 

Traditional collagen production process: 

Collagen can be dissolved in various extraction media with different pH values and concentrations. According to the different extraction media, the extraction of collagen can be classified into five categories: namely, hot water extraction method, salt method, acid method, alkali method, and enzyme method, etc. The basic principle is to change the external environment of the protein based on the characteristics of collagen, and separate collagen from other proteins. In the actual extraction process, different extraction methods are often combined with each other. 

Collagen membrane extraction process: 

Enzymatic solution → Fine filtration → Ultrafiltration of large molecules → Nanofiltration membrane concentration → Spray drying 

Advantages of collagen membrane technology: 

The membrane concentration process has low energy consumption, being only 30% of that of thermal concentration, thereby saving costs for the enterprise. 

2. Front-end purification, improving the quality and texture of collagen. 

3. During membrane concentration, inorganic salts are removed from the enzymatic solution, reducing the pungent smell and pesticide residues. 

4. Shorten the production cycle and increase production efficiency; 

5. At room temperature, the biological activity of the protein is basically unaffected. 

For many years, Wuhan Bona has been dedicated to the application process development of membrane separation technology. By integrating processes, membranes and equipment, it has accumulated rich experience in product purification and engineering-scale expansion. It not only solves manufacturing challenges but also improves product quality, and together with customers, it enhances the technical level of the industry.