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1、Application of membrane separation technology in food industry

Since twenty-first Century, due to the rapid development of China's food industry, the state has also strongly advocated sustainable development strategy, and the whole society has built an environment-friendly society. The advantages of membrane separation technology are low energy consumption, no pollution, and play an important role in the prevention and control of mixed bacteria pollution and heat sensitive material inactivation. In view of the advantages of membrane separation technology, it has been widely used in the food processing industry, and its market prospects are promising.

 

a. The application of membrane separation technology in the beverage industry

The traditional processing technology of fruit and vegetable juice not only damages the flavor and nutrition of fruits and vegetables, but also has high energy consumption and high production cost. However, the technology of ultrafiltration and reverse osmosis in membrane separation technology replaced the traditional processing technology of fruit and vegetable juice, and the desire to maintain the flavor and nutritional value of the processed fruit and vegetable juice was realized.

 

b. application of membrane separation technology in concentrated juice

Reverse osmosis technology is widely used in juice concentrating, and has been successfully applied to some fruit juices such as apples, pears, oranges and pineapples. As an important process in fruit juice processing, its processing technology has a direct impact on the quality of concentrated fruit juice. Evaporation technology is used in the traditional juice concentrating process, but the nutrients and heat sensitive substances of fruits and vegetables are easily affected by the high temperature in the evaporation technology. The use of reverse osmosis technology in membrane separation technology makes these problems readily solved. In the process of juice concentration, reverse osmosis technology separates some low molecular weight organic or organic water solutions with molecular mass less than 500. The pressure in the concentration process is between 0.1-10MPa and is easier to control.

 

c. Application of membrane separation technology in water treatment of beverage industry

The membrane separation technology can effectively separate the impurities in the water and improve the quality of water. The quality of water determines the quality of the beverage, because water is the main component of the beverage. Membrane separation technology to ensure the quality of beverage water. That is to ensure the quality of beverages.

 

2. Application of membrane separation technology in food fermentation

 

a. Flavoring products

The consumption of fermented flavoring products, such as soy sauce, monosodium glutamate and vinegar, is very high in our country. Membrane separation technology has a prominent advantage in dealing with the desalination, concentration and desiccation of liquid materials, so it is rapidly applied in the large-scale production of the above flavored products. Especially in recent years, membrane technology has been playing a more and more important role in the demand for new products such as low salt and nutritional fortified soy sauce, grain fermented glutamate and other new products, as well as the requirements for the green improvement of traditional soy sauce and monosodium glutamate pollution.

 

The invention of "a method of applying membrane filtration technology to produce pure raw soy sauce" was invented by Jiangnan University. The method includes: after settling the matured soy sauce for a certain time, after the ordinary prefiltration, the finished soy sauce was obtained by the filter membrane filtration. Compared with the existing technology, this method can not only ensure the effective bacteria removal of soy sauce, but also keep the original flavor of soy sauce; it can effectively remove unnecessary protein, prolong the shelf life of soy sauce and make the nutritional components of soy sauce as little as possible. Therefore, the method can overcome the defects of the existing technology, and the operation is simple, the filtered soy sauce has high recovery rate, and it can also provide the technological conditions which are more beneficial to the industrial production.

 

b. Application in dairy industry

The application of reverse osmosis and ultrafiltration technology in the dairy industry is mainly the recovery of whey protein and the concentration of milk. In the United States, the recovery of whey protein was first studied by reverse osmosis, and then the whey protein was recovered by over filtration. At present, the filtration method has been used as a standard technology for the recovery of whey protein, and has been widely applied in dairy industry in various countries.

 

In the process of milk and whey, membrane separation technology mainly uses the filtration method to recover whey protein from cheese whey and to concentrate the skimmed milk with the filtration method, and the reverse osmosis method can be used, but more factories use the filtration method or combine the two methods. Many kinds of dairy products can be obtained by membrane separation technology, and the quality of the products is improved.

 

The dairy industry in China has been greatly developed in recent years, but there is still a big gap compared with foreign countries, and the quality of the varieties needs to be improved continuously. It is more economical and effective to use membrane separation technology to process dairy products. At present, the application of membrane separation technology in the dairy industry is still in the experimental stage. The Inner Mongolia Light Industry Institute used the Danish DDS company's plate reverse osmosis and ultrafiltration device to carry out the concentration test of the milk. The Wuxi chemical research and Design Institute adopted the tube type ultrafiltration component to carry out the concentration test of the milk. In addition, Shanghai, Dalian and other places have also carried out ultrafiltration of whey protein.

 

c. Application of membrane separation technology in food fermentation industry

The combination of membrane separation technology and food and fermentation industry began in 1960s and 80s respectively. After entering twenty-first Century, with the progress of membrane manufacturing technology and the rapid development of the food fermentation industry, membrane technology has gradually become the development trend of the food fermentation industry and the hot spot of academic research.

 

From the view of industrial application, the world's main membrane materials manufacturing companies, such as foreign Pall, Millipore, Myklrolis, Ion-ics, Zenon, Hynux, domestic Tianjin membrane engineering technology company, medium blue membrane technology Co., Ltd. and Nanjing Chang Wu Film Technology Co., Ltd. all have various specifications and models for biological pharmaceuticals and functions. Fermentation and production of protein and carbohydrate macromolecules. Ajinomoto (flavour, the world's largest company in amino acid production), Angel yeast, Novozyme (the world's largest enzyme preparation company), AEStaley, Cargill (starch sugar), Cerestar, ADM and other famous enterprises in the domestic and foreign food fermentation industry, also have widely used membrane technology in production.

 
 

 

Shanghai Morui International Trading Co., Ltd
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