The shelf life of food is 3 minutes, and it will be known that an invention of Fisheries University is internationally leading

Introduction: the shelf life of food is long or short, which can be detected in 3 minutes Recently, the method and instrument for the determination of water activity of food invented by Professor Da Zhikui of Shanghai Fisheries University has obtained the national patent for invention, and has been recognized as the world's leading level According to reports, the water activity of food is an important parameter to determine the spoilage and shelf life of food The lower the water activity is, the longer the shelf life is, the less likely the food is to go bad; on the contrary, the shorter the storage period is, the more likely it is to go bad The traditional method of measuring water activity needs to grind the food into powder, and the error is relatively large However, Professor Da's invention does not need to destroy the food It can be measured at any position on its surface, which can be completed in 3 minutes, and the accuracy is relatively high It is reported that in the United States, the water activity of food in stock is more than 0.85, so it cannot be sold on the market In Japan, the water activity is 0.90 At present, there is no corresponding standard in China (author:) share to feed Weibo share to: