What are the effects of green tea and black tea

China's tea culture is very strong, in which green tea and black tea is tea in the side of the two major tea, green tea in the eyes of many of us is a very refreshing drink, many of us are very fond of the flavor of green tea. In contrast, black tea may receive a little less attention. But black tea is also very good for our body, black tea can fight cancer.

A common effect of green tea

China's tea culture is very strong, in which the green tea is the largest tea, the earliest people drink tea is green tea, green tea is not fermented tea, so do a good job in the finished tea as well as bubble out of the tea broth has a fresh tea green. Drinking it often has a lot of benefits for human health.

1 can delay aging. Tea contains a substance called tea polyphenols, with strong physiological activity and antioxidant, so it can effectively anti-aging, tea can be considered a natural scavenger of free radicals in the human body.

2 green tea can inhibit the occurrence of cardiovascular disease. This is because tea polyphenols can promote the body fat metabolism, however, fat is the main cause of the human body three high, three high is easy to cause cardiovascular, so often drink green tea for the prevention of cardiovascular very helpful.

3 can prevent the occurrence of cancer. Tea contains tea polyphenols can prevent many kinds of cancer-causing quartz in the body, and it has a certain killing power for many kinds of cancer cells.

4 can be anti-inflammatory and anti-diarrhea. Tea polyphenols have a very obvious kill, inhibit the role of viruses, in medicine people have used it in the treatment of influenza, dysentery and other diseases, the effect is very good.

5 can beauty. The use of tea beauty, the main method is to use it to wash the face, which can play the effect of oil control and pore size contraction, can prevent skin aging, for reducing the damage of ultraviolet rays on the skin also has a very good effect.

6 refreshment. Tea contains a certain amount of caffeine, caffeine can enhance the excitation of the cerebral cortex, promote the nerve center in the state of excitement, to achieve the clear mind, the effect of refreshing.

7 protect teeth. Tea is an alkaline drink, and contains a certain amount of fluorine, which can reduce the body's absorption of calcium, so it has a good effect on preventing dental caries and protecting teeth.

Second, the common effects of black tea

1, to prevent the flu

Related research has found that the long-term use of black tea gargling or drinking directly to effectively prevent the flu Oh; black tea is rich in trace elements of potassium, after the brewing of 70% of potassium are dissolved in the tea. After brewing, 70% of the potassium is dissolved in the tea, so it can effectively enhance the blood circulation of the heart, and can reduce the consumption of calcium in the body. However, I suggest that when you drink black tea, remember not to drink on an empty stomach, drinking black tea on an empty stomach will reduce the digestive function.

2, to help gastrointestinal digestion

From the fermentation point of view, black tea is fermented tea, relative to other teas is relatively mild, so the stimulation of the body is relatively small, even if the spleen and stomach of the weak crowd can also drink. Drinking black tea can help gastrointestinal digestion, appetite, help health, grease, diuretic, eliminate edema and other effects. Drinking black tea has a lot of benefits, but when you drink black tea, you have to have the right way to drink it. Drinking a lot of it can cause dizziness and panic symptoms.

3, anti-cancer, antioxidant

After the tea is placed for a long time, it will become reddish-brown, which is due to the oxidation of tea polyphenols into reddish-brown tea pigments. Research has shown that tea polyphenols and tea pigments have a strong anti-cancer, antioxidant effect. Drinking black tea often is a lot of help to your health'.

4, bright eyes

Tea polyphenols contained in black tea has an antibacterial and anti-inflammatory effect, if the eyes appear red, you can wash with black tea water several times a day. You will obviously find that your vision becomes clear and bright, and the redness is reduced.

5, stop bleeding

Black tea is rich in acidophilus, this element can stop capillary bleeding. Such as suffering from tongue carbuncle, stomatitis, eczema, bleeding gums, etc., are available black tea gargle treatment. Sores, pus ulcers, skin bleeding can also be used to bathe.

6, stop itching

Warm black tea to wash your hair or rub your body, the fluorine contained in the tea can quickly stop itching, but also effective against eczema.

7, hair

Wash your hair with black tea, and hair and dandruff efficacy. For example, if you think your eyebrows are sparse, you can use a brush dipped in black tea to brush your eyebrows every day, and after a long time, you will find that your eyebrows become naturally thick and shiny.

8, solid teeth teeth

Tea in the fluorine and tooth enamel after calcification, will enhance the resistance to acids, reduce the occurrence of cavities; fluoride can also eliminate plaque, the best two or three minutes after meals with tea rinse mouth.

9, in addition to bad breath

Black tea contains essential oils, aromatic odor, before and after brushing your teeth in the morning or after meals, gargling a few mouthfuls of black tea, can make the breath fresh, and often gargle with black tea can eliminate bad breath.

10, in addition to fishy greasy

Black tea also has a particularly strong in addition to fishy and greasy effect, eat shrimp and crab used to rustle mouth, hand washing feel refreshed.

11, sunscreen

The skin is sunburned, the towel can be dipped in black tea gently wipe the sunburned skin. Because black tea contains tannins on the skin has the role of astringent, tea in the flavonoid compounds also have anti-radiation effect.

Three, green tea and black tea anti-cancer effect

Green tea can induce cancer cells "suicide" has been confirmed by a number of experiments. Then, after processing the production of black tea, most of the tea polyphenols are oxidized, whether there is anti-cancer activity? Hunan Medical University Tea and Health Research Office of a special study confirmed that black tea also has a strong anti-cancer function.

Green tea is a high-temperature destruction of fresh tea leaves in the enzyme, to stop the fermentation and made, steeped out of the tea to maintain the original green fresh tea leaves, sweet and tasty, Asian people love to drink. The black tea is produced by the full fermentation process, the color black oily, steep out of the tea color red, with special aroma and taste, for the British, Americans, Canadians and other national preferences. The traditional point of view, green tea polyphenolic compounds is the main active ingredient of anti-cancer, but most of the tea polyphenols after processing is oxidized and the formation of polyphenol oxidation products of theophylline (black tea polyphenols, as it is known abroad). Is the anticancer activity of black tea therefore reduced?

In 1995, the World Food and Agriculture Organization initiated a study of the role of black tea on human health, by the black tea consuming countries, the United Kingdom, the United States, Canada, and the main black tea producing countries, Kenya, Indonesia, Sri Lanka, composed of the Tea Trade and Health Research Association, commissioned by the United States Cornell University College of Medicine, Boston University School of Medicine, State University of New York School of Medicine, and other research institutions, focusing on the impact of black tea on cancer. of the study.

In 1996, they achieved positive results in the study of the chemopreventive effects of tea pigments on certain cancers. Since then, countries have competed to carry out pharmacological research on black tea and its main ingredient, theophylline.

Since October 1997, Cao Jin and Zhao Yan of the Tea and Health Research Laboratory of Hunan Medical University have observed the biochemical and morphological changes in human acute promyelocytic leukemia cells (HL-60) after the action of theophylline from the molecular biology point of view, observing that the human acute promyelocytic leukemia cells all showed typical changes of apoptosis: DNA appeared trapezoidal bands, and apoptotic vesicles appeared in the cells; the flow cytometry results further indicated that the differentiation blocking effect of theophylline on cancer cells mainly occurred in the early stage of cell proliferation and differentiation, i.e., the pre-DNA synthesis stage.

Human cells are prone to mutate under some bad conditions, and become some bad cells for human body, sometimes they may become cancer cells. Therefore, we should pay full attention to the work of anti-cancer, we can drink some black tea or green tea to prevent.

Fourth, what is the difference between green tea and black tea

Applicable to different populations

The difference between black tea and green tea is not only in terms of efficacy, but also applicable to different populations.

1, stomach patients are more suitable for drinking black tea

As black tea after fermentation, not cold, so the stomach, stomach patients can not drink green tea but can drink black tea, tea time is best after meals.

2, stomach patients drinking black tea will aggravate the disease

Green tea is not fermented tea, chlorophyll content is more, more stimulation of the stomach and intestines, drink not only can not play the other health effects of green tea, but also aggravate the symptoms of gastric disease, so patients with gastric disease is best not to drink green tea.

Brewing water temperature is different

The difference between black tea and green tea, in the brewing of tea, the water temperature is not the same as the choice of oh.

1, green tea water temperature should not be too high

Green tea, especially the buds and leaves of the tender green tea, usually with about 80 degrees of boiling water. Water temperature is too high, easy to destroy the tea in vitamin C, caffeine is easy to precipitate, resulting in yellow tea, taste bitter.

2, black tea needs to be brewed with boiling water

Black tea, it is necessary to use 90-100 degrees of boiling water, such as water temperature is low, the active ingredients in the tea precipitation is less, the tea taste light.

The difference between black tea and green tea, do you really understand?

Storage time is different

Green tea black tea to drink the year, but not just the next season to drink, green tea put 1-2 months, black tea put 3-6 months.