How to remove tea stains from plastic cups? How to quickly remove the rust from the cup

when making tea, the teapot and the cup will often be & lt; Long & quot; A layer of brown red rust is not easy to wash off. What is tea rust? Where does it come from? How to remove the tea pollution in the cup? How to remove tea rust?

1, milk deodorization method

first clean it with detergent, then pour two soup of fresh milk into the plastic cup, cover it, shake it, make every corner of the cup contact with the milk, about one minute, finally pour out the milk and clean the cup.

2, Orange Peel deodorization method

first clean with detergent, then put the fresh orange peel in the middle, cover it and rinse it for about 3 to 4 hours.

3, use toothpaste to remove tea rust

to remove tea rust is not difficult, you just pour the water in the teapot and cup, squeeze a section of toothpaste with an old toothbrush, and brush back and forth between the teapot and the teacup. Because there are both detergent and very fine friction agent in the toothpaste, it is easy to remove the tea rust without damaging the teapot and cup. After wiping it, rinse it with clean water, and the teapot and teacup will be as bright as new again.

4, replace plastic cup

if the above methods can not remove the peculiar smell of the plastic cup, and if the cup emits a strong pungent smell when rushing into hot water, consider not using this cup to drink water, because the plastic material of the cup is not good, and drinking water with it may be harmful to health, so it’s safer to give it up and replace it with another cup. When you put the tea into the teapot, pour it into the boiling water, wait a moment, a pot of fragrant and delicious tea will be ready. Perhaps you didn’t expect that there are dozens of chemical components gradually dissolved in water from tea! For example, tannin is the ingredient that makes tea set astringent, and volatile oil is the one that makes tea emit special fragrance; Caffeine and theophylline, which have the effect of excitation and diuresis after drinking tea; Green tea is green because it contains chlorophyll. Black tea is red because it is caused by theaflavins and other pigments; In addition, tea also contains several vitamins, sugars, and a variety of inorganic salts. And make teapot, teacup appear tea rust, it is the trick that tannin makes mainly. Tannin is a complex phenolic organic compound, which can be dissolved in water, especially boiling water. When you eat not too ripe persimmon, the tongue is often astringent and numb, which is the tannin playing a trick on you. Tannins are found in immature fruits, such as water chestnut, lotus root and many Chinese herbal medicines. However, tannins from different sources have different chemical structures and tastes. The taste of tea tannin is astringent first and then sweet. Many people especially appreciate this taste! Tannin is a character not very stable guy when it is mixed with oxygen in the air; Meet & quot; It will make friends with oxygen enthusiastically and pull oxygen atoms into its body to oxidize itself and turn dark, so the color of tea always gets darker after it is placed. In addition, chemical changes such as condensation and dehydration also occur between tannin molecules, which makes their & lt; Sub & quot; Tannin is a red or brown substance that is insoluble in water. When it slowly precipitates from tea, it always likes to adhere to the inner wall of teapot and teacup. As time goes by, you can see the inside of teapot and teacup; Long & quot; There is a layer of brown red tea rust.

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