Bubbles in tea, a natural weight loss drug?
When making Green Tea 4011, I sometimes encounter a layer of foam. Especially in the first round of brewing, many people will treat this layer of foam as an "impurity" in the tea, and pour out the first tea and "wash" it away. Or, use the lid to set them aside, just like removing the foam when stewing meat.
"Tea saponin" that produces foam
The substance that produces this layer of foam is called "tea saponin", which is a kind of saponins. Saponins are a kind of secondary metabolites widely found in plants, among which ginsenosides with the largest name are considered to be the "functional components" of ginseng. Some seafoods also contain saponins, such as sea cucumbers. Researchers looking for "active ingredients" have also targeted sea cucumber saponins. Saponins are also rich in saponins, which were used by ancients to wash clothes long before people knew the chemical structure of saponins.
The active ingredients of the saponins used for washing clothes and the ginseng, which was regarded as a "big tonic" by ancient Chinese, are actually the same substance, which may surprise many people. But in nature, this is also normal. Saponins are a kind of organic molecules with specific structure. There are hydrophilic and hydrophobic parts in the molecule, which makes it have good surface activity-that is, it can produce the root of foam. This surface activity can wrap up stains on clothes and be washed away by water, so it can be used for washing. You can wash your clothes, and you can wash your hair in a bath. In ancient times, when there was no shampoo, "natural surfactants" such as saponins were probably women's shampoos.
The "medicinal effect" of saponin may be related to its biological function. Plants produce saponins, obviously not for human washing. Its value for plant survival is not yet fully understood, and it is generally believed to be related to self-protection. According to current scientific research, saponins are antibacterial and toxic to some insects. Moreover, it has a bitter taste and will prevent it from being swallowed in large quantities by other animals.
These antibacterial properties and toxicity of these come from the ability of molecules to bind to other cells. Once combined, it has biological activity-with biological activity, it will be remembered by humans to explore its "health function" or "medicinal use." Especially the "traditional treasure" of ginseng, once it is proved that the legendary functions are supported by "scientific evidence", it will be "money way" ambitious. However, so far, it has only been shown to be "effective" in many cell experiments and animal experiments, and the effect in humans is still looking at flowers in the mist.
Chunmee Tea Company's tea saponin, as a kind of saponin, is naturally inevitably put into these studies to "walk". The result is roughly that nothing is better or worse than other saponins. It is not very reliable to expect it to have any "health care function", but watching the scientists' research on them can be used as a "high-end" talk when drinking tea and chatting.