Vacuum pasteurization is a special method to make food stay safe and fresh much longer time. It use heat too, but not like the normal way of pasteurization. In usual pasteurization, they heat food to very high temps so to kill all the bacteria. But in vacuum pasteurization, food get heated inside vacuum, meaning air is removed from the container. So food can heat up at lower temps, and this help keep taste and nutrients much better. Companies such like Shanghai Changlong use this p
Pasteurizer machine in their food processing to make high quality stuff. This process make sure food stay safe to eat for longer, and still taste good.