Passion fruit is acidic, easy to ferment the gas, and passion fruit shell or bottle, relatively sealed inside, so the passion fruit fermentation gas will continue to expand, causing an explosion. Especially in the summer heat, more likely because the temperature rises, so that the gas expansion accelerated.

In fact, not only passion fruit, some do not contain additives canned, jam, or chili sauce, etc., are the same as the fermentation of gas. Like making kimchi at home, if you use an altar, after a period of time, you will find bubbles around the altar, or every time you go to pick up the kimchi, slightly touch the lid of the altar, there will be a lot of bubbles coming out.

Because a certain degree of processing is required, some additives are added to the process. After the additives are added, the microorganisms are destroyed and the fermentation conditions are lost so that no more gas is produced. This point also shows that passion fruit juice is pure natural health food.