Membrane Filtration Technology for Pectin Processing

Pectin is a kind of high molecular weight polysaccharide compound existing in plant cell wall. It is an important additive in food industry, used as gelling agent, thickener and stabilizer. Shandong Bona Group has successfully applied membrane separation technology to pectin purification process. The designed and manufactured pectin membrane filtration equipment can be widely used in the production of pectin such as orange peel, lemon peel, grapefruit peel, banana peel and apple peel. 

Disadvantages of traditional pectin extraction:

The commonly used refining methods in pectin production are alcohol precipitation, and the commonly used concentration methods are multi effect concentration and vacuum concentration under reduced pressure. In the traditional production process, due to the large amount of extraction liquid, a large amount of steam needs to be consumed in the concentration process, resulting in high production costs for enterprises. At the same time, because there is no impurity removal process in the thermal concentration process, the content of impurities in the extraction solution, especially small molecule impurities and inorganic salts, will increase, which will affect the quality of the product. In the process of alcohol precipitation, due to the large amount of impurities in the extraction liquid, the impurities in ethanol are high and the heat recovery loss is large.


Pectin extraction process:

Pectin extract → plate and frame coarse filtration → pretreatment fine filtration → ultrafiltration membrane filtration → sedimentation → subsequent process

Advantages of pectin extraction and purification membrane filtration technology:

1. The fine fruit dregs in the pectin extraction solution were removed by pre-treatment fine filtration, and the extraction solution met the requirements of membrane entry;

2. The membrane filtration has high precision, removes small molecule impurities and inorganic salts, and realizes the purification, impurity removal and concentration of pectin;

3. Pure physics, normal temperature filtration, low energy consumption;

4. Cross flow operation process design can solve membrane pollution and blockage without adding filter aid;

5. The membrane filtration equipment adopts advanced modular design, which makes it easy to replace filter membrane and easy to operate;

6. 304 or 316L stainless steel sanitary materials are selected

7. High degree of automation, PLC and frequency converter control, simple and convenient for operation;

8. Imported membrane elements are used, which have long service life and do not need to be replaced frequently.

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Shandong Bona Group is a professional manufacturer of membrane separation equipment, with a group of senior engineers in membrane engineering applications. After years of technical development and engineering practice, mastered advanced ultrafiltration, nanofiltration, reverse osmosis and ceramic membrane technologies. Focus on the design and production of small-scale, pilot and industrial membrane equipment for customers. 

Post time: Sep-07-2022