Tea stains are not washed and may cause cancer
Scientific research on tea flakes that have not been finished is shown to contain minerals and traces of harmful heavy metal ions such as cadmium, mercury, and arsenic.
When the water is heated, the solubility of some calcium and magnesium ions decreases as the water temperature increases, and the concentration of the insoluble salts increases continuously, and precipitates when the water is concentrated to a certain extent.
These precipitates can enter the tea cup with the tea brewed, and the tea that is not finished or put in time is exposed to the air, and the tea polyphenols in the tea and the metal elements in the tea rust are oxidized and produced.Brown tea rust, commonly known as tea scale, adheres to the inner wall of the cup. Tea rust contains cadmium, lead, mercury, impurities and other harmful metals, which is the chief culprit for human health.
Long-term use of cups that are not stained with tea scale can cause cancer. Tianjin drug research experts said in an interview: “The tea scale contains toxic substances such as cadmium, lead, mercury, arsenic and carcinogens such as nitrite. These substances will adhere toSmooth teacup surface.
As tea enters the body and enters the digestive system of the human body, it combines with proteins, fatty acids, vitamins, etc. in food to form insoluble precipitates, instead of absorbing and digesting these nutrients, thereby eroding organs such as the stomach and intestines.damage.
In addition, the cups that are often not cleaned still have more scale, which also contains a lot of heavy metals, which is extremely unhealthy for health.
At the same time, these oxides enter the body will cause nerves, digestion, urinary hematopoietic system lesions and dysfunction, and even cause premature aging, especially complications, cadmium can cause cancer, causing distortion and health.
How to thoroughly wash away the tea scale The thicker the tea, the harder it is to clean, so daily cleaning and regular cleaning are equally important.
Experts suggest that after drinking tea every time, until there is no obvious tea stain on the tea set, it should be carefully cleaned to avoid accumulation.
(1) Tea stain deposition has not been cleaned for a long time. It can be easily cleaned with heated rice vinegar or soaked in baking soda for a whole night and then brushed with a toothbrush.
It should be noted that if you are using a teapot, you do not need this cleaning.
The teapot itself has pores, and the minerals in the tea scale can be absorbed by these pores, which can decompose and protect the pot, and will not cause harmful substances to “run” into the tea water and be absorbed by the human body.
(2) Put a teaspoon of orange juice or orange juice into the teacup and put it in water for 2-3 hours, so that the tea scale and the tea set lose their adhesion and are easily removed.
(3) Add water to the teapot or teacup, add the potato skin, heat and boil, rinse and rinse, it is easy to clean.
(4) When using metal tea, it will become black due to tea stains. If it can’t be washed with medium-sized detergent, it can be soaked with vinegar or easily descaled after soaking with bleach.
(5) Apply the edible salt to the gypsum, especially where there is tea stain.
Then use a toothbrush to scrub the cup vigorously, and then rinse it off with water.
Experts especially reminded that it is best not to use a relatively clean cleaning tool such as steel balls or cleaning balls to clean the tea stains, because these scrubbing tools can easily damage the enamel on the inner wall of the tea set, making it thinner and thinner.The scale can easily penetrate into the deep layers of the tea set and it is extremely difficult to remove it completely.
Individuals should use a soft brush or toothbrush, a gentle cleaning cloth to clean.