Digestion of digester in the determination of true protein in dairy products
The domestic dairy industry is affected by melamine and other incidents and has not been completely trusted by the people. This also reflects the problems in China's dairy industry, including the incomplete quality standards system, backward industry management, and uneven product quality. Constrained the healthy development of China's dairy industry. The definition of dairy true protein compares the standard detection methods of dairy protein at home and abroad, and expounds the rapid detection methods that are currently widely used and have application prospects, with a view to formulating national standards and improving the safety and quality of dairy products. . Digestion furnaces play an important role in the study of dairy products, and have played a role in digestion sampling in the determination of dairy true proteins. Scan WeChat, we met with hate: Industrial Fan,Industrial Ceiling Fan,Save Energy Industrial Ceiling Fan,Industrial Ventilation Fan Guangdong Shunde Liangci Electric CO.,LTD , https://www.marckeez.com
Due to the defects in the detection methods of dairy protein in China's national standards, the addition of urea, ammonium fertilizer, and even melamine and other nitrogen-containing organics to increase the illegal operation of protein content 0 seriously restricts the quality of dairy products in China and affects consumption. The health of the person. Although China published the standards for the determination of non-protein nitrogen content in milk/dairy products in 2008, due to the short implementation time and the non-protein nitrogen content determined by this method, the true protein content of dairy products cannot be intuitively reflected.
It is not difficult to make up for the deficiency of the Kjeldahl method of the digestion furnace theoretically and practically. It takes only one more step: the sample is first treated with trichloroacetic acid to precipitate the protein, and the precipitate and the filtrate are separated after filtration. The nitrogen content of the protein can give the true content of the protein and the nitrogen content of the impersonated protein, which has long been an international standard for detecting the nitrogen content of milk. Therefore, it is recommended that national standards be revised according to this method in the revision so as to better protect the quality and safety of food in China.
The digester digestion method is always tedious. Although only a part of the rapid detection method of dairy protein is recognized by AOAC, it is believed that with the development and improvement of protein detection instruments, these methods are rapid, sensitive, and easy to operate. The detection method will gradually replace the traditional method to better monitor and control the product quality of dairy products. 