A university in our province invented three new milk testing technologies and reported it to the Ministry of Science and Technology
Left: melamine-free, dark blue-purple right: Contains melamine, purple
In less than 3 minutes, our technology can detect whether the milk is qualified. Professor Chen Huanwen of Donghua University of Technology introduced that the school’s mass spectrometry laboratory has made major breakthroughs in the field of milk field detection technology. Three new technologies have been successfully developed to detect not only the ingredients of various additives in milk but also Within seconds, it was analyzed whether melamine exceeded the standard.
Traditional methods are time-consuming and costly
Due to the decentralization of milk sources in China and the complexity of milk testing, illegal elements may add hundreds of harmful substances such as cow's urine, lime water, urea, and melamine to milk. To determine whether or not a box of milk is qualified, it is sometimes necessary to test more than one hundred indicators, which is time consuming, laborious, and costly.
“Most consumers are most concerned about the quality of milk, not what harmful substances in the end.†To this end, Dr. Chen Huanwen another way, and the research team to turn one by one investigation into a whole inspection, developed three kinds of detection technology, can meet Testing needs of different groups such as families, supermarkets, laboratories and even quality supervision departments.
New technology detection takes only 1 second
According to Dr. Chen, the first method is to use a device like a small semiconductor radio to quickly distinguish real milk from milk mixed with various substances in a matter of 3 minutes by scattering transmission spectrometry. Soybean milk, milk powder and other types of imitation milk, cost less than 1,000 yuan, suitable for home and supermarket use.
The second method is more efficient. Dr. Chen has found a substance that reacts specifically with melamine. Some of the sample milk is added to the reagent. If it does not contain melamine, it will appear dark blue and purple; if it contains one millionth of melamine, it will turn purple. This method has a lower cost of detection. The disadvantage is that only melamine can be detected.
The last method requires a lot of professionalism and is also the most costly one. Dr. Chen’s research team collaborated with Dr. Liu Qing of Beijing Physical and Chemical Analysis and Testing Center to develop a rapid detection technology that can determine if the content of melamine in milk powder exceeds the standard in less than 1 second and obtain other doping ingredients. With information on the type and level of the content, this method can increase the speed of supervision and inspection of foods such as milk.
Has been reported to the Ministry of Science and Technology
The reporter learned that in early October, the Ministry of Science and Technology collected technologies and products for rapid detection of melamine in liquid milk and milk powder, and organized on-site testing. Currently, the three technologies developed by Dr. Chen’s research team have been reported and are waiting for results.
At the same time, there have been initial intentions for the company to reach a conversion with the East China Institute of Technology. Yin Xuejun, Jiang Guangliang, reporter Chen Meng
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