Membrane separation technology plays a big role in deep processing of tea?

Membrane separation technology plays a big role in deep processing of tea?

Membrane separation technology has been used in food industry since the late 1960s. First from dairy processing and beer aseptic filtration, then gradually used in juice, beverage processing, wine refining, enzyme industry and so on. The development of membrane 

separation used in food processing is relatively slow in our country, and for many years it has only remained in the production of some enzyme preparations. It was not until the early 1990's that China's food production plants began to pay attention to membrane separation. In recent years, membrane separation has been applied rapidly, especially in beverage industry.

Compared with the traditional processing technology in the food industry, membrane separation has the following three characteristics:

Energy-saving: the traditional method of dehydration in the food industry is evaporation, which first heats water into steam. Water needs to absorb a great deal of heat from liquid phase to gas phase. Dewatering by membrane separation without this phase transition, the energy consumption is greatly reduced.

2, can maximize the retention of the original nutrients: in the process of food heating and evaporation, due to high temperature, a lot of heat-resistant nutrients are destroyed, and membrane separation at room temperature for dehydration, You can retain all or most of the nutrients in the food, basically to the original taste. In this way, the products can be processed to improve the quality of the grade, so that the value of the product.

(3) the process and operation steps can be simplified: traditional beverage production is made by pasteurization and adding chemical preservative to make the product meet the requirements of food hygiene. Microfiltration membrane technology can replace pasteurization and chemical preservative. The traditional juice clarification is first treated with enzyme in the reaction tank, then filtered or centrifuged, which takes a long time, occupies a large area and costs a lot of time. If the juice is clarified by ultrafiltration technology, the equipment such as reaction cylinder, pump, compressor, centrifuge and so on can be reduced, diatomite or other filter aids and enzyme preparations can be saved, the operation cost and labor cost can be reduced, and the output of juice and waste residue can be reduced. So, it Can simultaneously play a role of reducing the production cost and increasing the yield.

Membrane separation technology has been widely used in the field of food processing, and the food produced by membrane technology has obvious advantages. In order to increase the added value of products and develop new products, membrane separation technology is one of the developing directions of food processing. Once the large-scale industrial application of membrane separation technology is realized, it will lead to a major innovation in industrial production.