Thursday, June 25, 2020

The harm of tea dirt and how to remove it easily

Anyone who likes to drink tea knows that after drinking tea for a long time, tea stains will appear in the cup. Will it be harmful to health if the tea scale is not removed? How can I remove the tea stains from the cup? Many people are concerned about this issue. The following is a detailed answer for everyone.

Will tea dirt cause harm to the body?

Tea dirt is produced by the oxidation of tea polyphenols, so people who drink tea need not worry.

Dr. Zhong Kai, a food safety doctor, published in the Beijing Youth Daily, "Tea dirt has heavy metals, can it cause premature aging? The article pointed out that the main component of tea scales is tea polyphenols, and a small amount of metal ions are involved in the formation of tea scales. Elemental analysis shows that most of the components of tea scale are carbon and oxygen elements, which are derived from polyphenol polymers, and there are also small amounts of potassium, calcium, magnesium, aluminum, zinc, selenium and other elements.

The metal element mainly exists in the form of water-insoluble carbonate or hydroxide, and the calcium element is the main promoting factor for the formation of tea scale, mainly from the water for making tea. Heavy metal pollutants such as lead, arsenic, cadmium, mercury, etc. are not the main metal elements of tea scale, so people who drink tea need not worry.

Tea scale is a polymer produced by tea polyphenols under the action of air oxidation. Therefore, it is mainly formed near the waterline and adheres to the inner wall of the container. The tea scale components formed by different types of tea are basically similar. Since green tea has more polyphenols, it is more likely to form tea scales, while black teas and black teas after deep fermentation have less tea scales.

Studies have shown that with time, the molecular weight of the polymer in the tea scale gradually increases, which means that the polymerization of polyphenols is still slowly proceeding. Therefore, the longer the tea stains are, the more difficult it is to remove them.

How to easily remove tea stains? Put a slice of lemon when making tea

Some foreign researchers have found that the brewing of one bag of English black tea at a time has more tea scale than that of two bags at a time, and five bags at a time does not form tea scale. This is probably because the polyphenols in the tea leaves the pH of the tea soup The value drops. Another patent achievement is to add a small amount of citric acid to the tea bag to adjust the taste and reduce tea scale.

In addition, calcium ion is a key factor in the formation of tea scale. It promotes the oxidation of tea polyphenols and at the same time plays a cross-linking role in the polymerization process. The harder the water, the more tea scale, the hardness of groundwater is greater than the surface water, and the tea scale formed by using pure water to brew tea will be much less. Tap water can boil the water thoroughly for a few minutes, and the calcium and magnesium in it will form carbonate alkali and reduce the formation of tea scale.

Potato/egg shell descaling method

First pour about half a cup of hot water into the thermos, cut the potatoes into diced pieces, put them in the thermos, then tighten the lid and shake it up and down for two minutes.

Open the water cup, pour out the water and diced potatoes, and rinse again with clean water. You will notice that the tea scale adhered to the wall of the cup is obviously reduced. Repeat this several times to remove the tea scale. If you don't have potatoes on hand, you can also use broken egg shells, and the steps are the same.

Salt/toothpaste descaling method

You can prepare a clean toothbrush, soak the bristles of the toothbrush, dip some table salt, and then extend the toothbrush into the cup, carefully scrub the wall of the cup, the descaling effect is very good. If you do not have table salt on hand, you can also use toothpaste instead.

The bottom of the cup is the most difficult part to clean during descaling. You can find a small piece of soft cloth dipped in some salt or toothpaste, wrap it on the chopsticks, then stretch the chopsticks to the bottom of the thermos cup and stir it a few times.

The tea stains in the cup will not remove the harm

Citrus peel to remove tea stain on cup

After eating oranges, everyone will easily discard the orange peel, but here, the editor should tell everyone that wiping the tea cup with orange peel can remove tea stains.

For teapots, etc., we can boil them with orange peel or citric acid and add water, and the residues of the teapot can be cleaned 2-3 times.

(1) Remove tea stains on metal tea compartments: When using metal tea compartments, it will become black due to tea stains. If it cannot be washed off with a medium detergent, it can be soaked in vinegar or bleached. The agent can be easily descaled after soaking.

(2) Remove tea stains from tea cups or teapots: Tea cups and teapots will have a lot of tea stains when used for a long time, and can be easily removed by rubbing with a sponge dipped in salt.

(3) To remove small tea stains, soak them in a solution of bleach or cleaning powder, and leave them overnight to remove tea stains.

(4) Scrub with toothpaste or broken eggshell, then rinse with water.

(5) Put a teaspoon of orange powder or orange juice in the tea cup or teapot, fill it with fresh water and leave it for 2-3 hours, so that the tea scale and tea set lose their adhesion and can be easily removed.

The tea stains in the cup will not remove the harm

(6) You can peel the potatoes, put the peeled potatoes into the water-filled teapot and teacup, and boil them together. After the water is boiled, cool it a little and brush it, you can easily attach it to the teapot. And the tea stains under the tea cup are cleaned and the tea stains are removed. Its principle is that there are starches in potatoes, and these starches have strong suction power, so it is easy to remove the dirt from the cup.

(7) Although some tips for cleaning tea stains can remove tea stains, there are professional tea stain cleaners in China. This kind of tea soil cleaner is extracted from natural materials. It contains no chlorine and no fluorescent whitening agent. It has a good cleaning effect and is environmentally friendly. It is suitable for cleaning all kinds of tea sets.

The tea scale deposits have been difficult to clean for a long time. You can use heated rice vinegar or baking soda to soak all day and night, and then brush with a toothbrush to easily clean. It should be noted that if a clay teapot is used, it does not need to be cleaned like this. The teapot itself has stomata, and the minerals in the tea scale can be absorbed by these stomata, which can play a protective role in the pot, and will not cause harmful substances to "run" into the tea water and be absorbed by the body.

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