A method for extracting oil bodies by combining diafiltration and ultrafiltration

By combining diafiltration and ultrafiltration, the problem of low centrifugal separation efficiency in industrial oil body extraction is solved, and high-protein and low-water oil bodies are obtained, which are suitable for industrial production and realize an environmentally friendly and efficient extraction process.

CN117089401BActive Publication Date: 2025-10-17CHINA AGRI UNIV
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Patent Information

Application Number
CN202311090970.0
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2023-08-28
Publication Date
2025-10-17
Estimated Expiration
2043-08-28

AI Technical Summary

Technical Problem

In the prior art of industrial extraction of grease bodies, the centrifugal separation efficiency is low, making it difficult to achieve efficient separation of proteins and grease bodies in the suspension, and the energy consumption is high, making it difficult to apply to industrial production.

Method used

A combination of diafiltration and ultrafiltration was used to remove small molecule sugars, polyphenols and salt particles through diafiltration, and 5kDa diafiltration membrane and ultrafiltration membrane were used for concentration to obtain a high-protein and low-water fat body.

Benefits of technology

It achieves higher protein content and lower moisture content, reduces energy consumption, is suitable for industrial production, does not use organic solvents, and is environmentally friendly and efficient.

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Abstract

The application provides a method for extracting oil bodies by combining diafiltration and ultrafiltration, comprising the following steps: 1) soaking and crushing plant seeds containing oil bodies, separating the material residue, removing the waste residue by filtering through filter cloth, and obtaining a first mixture of protein oil bodies; 2) filtering the first mixture of protein oil bodies through a 5-kDa diafiltration membrane to obtain a second mixture of protein oil bodies; and 3) ultrafiltering the second mixture of protein oil bodies through a 5-kDa ultrafiltration membrane to obtain a third mixture of protein oil bodies. The method for extracting oil bodies by combining diafiltration and ultrafiltration has the advantages that: the method uses ultrafiltration and diafiltration technologies, the equipment has a smaller volume, energy consumption is reduced, and the method is suitable for industrial production of oil bodies. Compared with centrifugal separation products, the product obtained by the method has higher protein content, less water content and more fat content.
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