Bone soup/bone extract contains rich protein components (hydrolyzed into bone peptides), which can be filtered and concentrated as a food additive. It has been widely used in the fields of food and health products. In general, raw materials such as pig bones, cow bones, sheep bones, chicken bones, and fish bones are crushed and steamed. The steamed bone soup is initially precipitated/centrifuged to obtain a milky white bone soup stock solution (bone peptide stock solution is obtained after enzymatic hydrolysis). Traditional bone soup stock solutions require multi-stage centrifugation to remove oil and impurities, and the resulting filtrate is a turbid liquid that is not clear enough. The centrifugal process is high in energy consumption, labor-intensive, and difficult to achieve automation.

Shandong Bona Biotechnology Group Co., Ltd. is dedicated to the development of membrane separation and concentration technology and the production of membrane equipment. It has developed an integrated process of membrane filtration and membrane concentration to replace traditional processes. Firstly, membrane filtration technology is used to pre-treat the original solution of bone soup, remove impurities such as colloids, oil lipids, and bone residue, and retain most of the effective components such as proteins in bone soup. Then, the filtrate is sent to the membrane concentration equipment for concentration, Bone soup can be concentrated up to 10 times, with a protein content of over 40%. Our company has optimized the selection of membrane cores for membrane concentration equipment, doubled the concentration speed, and achieved an automated process for bone soup filtration and concentration, effectively reducing concentration energy consumption costs.

The process flow is shown in the following figure:

Process characteristics:

1. Membrane filtration pretreatment can withstand high temperatures, and bone soup does not need to be cooled, reducing energy loss;

2. The filtrate obtained from pre-treatment is clear and transparent, with high quality filtrate and good pre-treatment effect;

3. The membrane concentration process can withstand high temperatures and reduce energy loss;

4. The membrane concentration adopts imported membrane components with stable quality, high concentration efficiency, high concentration multiple, and good product quality;

5. Optimizing the selection of membrane cores during membrane concentration process, resulting in high production efficiency;

6. The entire process has no phase change, effectively retaining nutrients and active ingredients

7. The entire process does not require the addition of chemicals and is pollution-free, making it a green and environmentally friendly technology

8. Optimize system design, with low total energy consumption, low operating costs, simple operation, stable operation, and convenient maintenance;

9. The system automation control can complete integrated data processing and online monitoring, reducing labor intensity;