1. There are carbon dioxide bubbles in pop rock.
The main components of pop rocks are not much different from ordinary hard candy, but there are actually many small bubble structures inside the candy, which "encapsulate" high-pressure carbon dioxide bubbles. If you look at it with a microscope, you can see the structure of these small bubbles. When pop rocks touch the tongue, saliva begins to dissolve the sugar on the tongue, and the outer wall of the small space surrounding the small bubbles becomes fragile. At this time, the carbon dioxide in it is exhausted, which pushes the burst rock to further rupture and "jump", creating a scratching feeling on the tongue.
2. How to make pop rock.
Firstly, all kinds of raw materials of candy are mixed and heated to form thick hot syrup. If the hot syrup is cooled directly, you will get ordinary glassy hard candy. Hot syrup will be sent to high-pressure carbon dioxide gas environment for stirring and "aeration", and the pressure used is about 50 times of normal atmospheric pressure. Next, the syrup is cooled and solidified under high pressure, and then it is restored to normal pressure. After decompression, the candy filled with high-pressure gas will break, and there will still be many bubble structures sealed by high-pressure gas in the fragments.
3, carbon dioxide gas will not have adverse effects on the body.
The carbon dioxide content in pop rock is very low, which is absolutely not a threat to human body. In addition, when pop rocks meets saliva in his mouth, he will melt, and most of the carbon dioxide has been released in his mouth. In fact, it is less likely to enter the stomach, so it will not bring a burden to the stomach.
Pop rocks is one of the snacks that many people like, because it contains carbon dioxide bubbles, so it can jump and make people feel special.