The production technology of oolong tea, now more and more people like to drink tea, which is also one of the ways of health preservation. Oolong tea, also known as green tea, is a fine product in tea, which has both the freshness of black tea and the fragrance of green tea. It is one of the special teas in China. Look at the making process of oolong tea.
Oolong tea production process 1 1, the first step of oolong tea production is withering.
Withering is the most important step in the production of oolong tea, which is to cool and sun the tea. Tea farmers will give off some water in tea by withering, and improve the toughness of tea. After this step of processing, the activity of active enzymes in tea will increase, and at the same time, some grass fragrance will be emitted, which is beneficial to the disclosure of aroma.
2. The second step of oolong tea production is green.
Making green is the most important step in the production of oolong tea, and it is the main step to form the aroma of oolong tea and the red edge of green leaves. People wither oolong tea and put it into a green shaker to shake it, so that the tea leaves collide with each other.
Let the enzymes in tea further oxidize. When oxidized to a certain extent, the color will turn yellow-green, and the edge will turn red.
3, oolong tea production three fried.
Stir-frying is a turning point after the endosperm of oolong tea is basically formed. Its main task is to inhibit the activity of enzymes in tea, control the oxidation process of tea, prevent tea from turning red further, and fix the fragrance quality of tea. At the same time, it can also make the grass gas in tea volatilize and further transform, which can make the tea fragrance more intense.
4. The fourth step of making oolong tea is kneading and drying.
Oolong tea must be twisted after frying, so that the tea leaves become soft and curly, and the volume is reduced, which is convenient for brewing. At the same time, the extruded part of tea juice can be attached to the surface of tea.
It plays an important role in improving the taste and concentration of tea. After rolling, drying oolong tea in a ventilated place can eliminate the bitterness in tea and make the finished tea more mellow. After drying, oolong tea will be processed.
Oolong tea production process 2 Use oolong tea to lose weight, and drink one cup before and after three meals. It is best to drink hot tea without sugar. And don't drink it immediately after meals. It is more appropriate to drink it every 1 hour. Drinking tea should also adapt to personal physique. If you feel uncomfortable after drinking tea, such as stomachache or insomnia, you'd better stop.
When making tea, the water temperature should be controlled at about 80℃ and 90℃, and the brewed tea should be drunk within 30-60 minutes, otherwise the nutrients in the tea will be oxidized.
Efficacy and function of oolong tea
Oolong tea can reduce serum neutral fat and cholesterol and delay aging. Clinical experiments also suggest that oolong tea can improve SOD activity. It can be inferred that oolong tea is likely to have a certain health care effect on the skin.
As an indicator of healthy skin, it can be listed as follows, such as moist skin, elasticity, tension, good blood circulation and so on. What effects will fat metabolism and active oxygen scavenging have on skin health? Further, the following experiments were done.
In order to find out whether drinking oolong tea is related to skin beauty, we selected 73 healthy China women aged 2 1 ~ 55 as the research objects for clinical experiments.
Let everyone drink 4g oolong tea every day, 2g in the morning and 2g in the afternoon for 8 weeks. Then observe the changes of sebum content and water retention capacity, and take the change as an index to measure the drinking effect.
Efficacy of oolong tea
Medical researchers in China claim that oolong tea can reduce weight. The popularity of oolong tea is entirely due to its fat-dissolving and slimming effect, and this statement does have scientific basis. Because tannic acid, the main component of tea, has been proved to be closely related to fat metabolism, and the experimental results have also confirmed this.
Oolong tea can really reduce the cholesterol content in the blood, and it is really a rare slimming tea. Experiments show that drinking one liter of oolong tea every day can inhibit the rise of cholesterol.
Although the amount to drink depends on everyone's physical condition, when the food is too greasy, it is best to match oolong tea, which will not only make you feel full, but also remove greasy.
Health care function of oolong tea
1, eliminating reactive oxygen species harmful to beauty and health;
2. Drinking 1 L oolong tea every day can improve skin allergy;
3, drinking oolong tea can lose weight:
4. Anti-tumor and anti-aging effects.
Benefits of drinking oolong tea for whitening and anti-aging
Drinking oolong tea can not only whiten the skin, but also resist aging. Because the tea polyphenols and trace element selenium contained in oolong tea have antioxidant effect, it can eliminate the generation of human oxidation reaction, delay aging and whiten skin.
In addition, oolong tea also contains some vitamin C, which naturally whitens people's identity and makes people's skin white and tender.
Prevention of cardiovascular diseases
Drinking more oolong tea can also help prevent a variety of cardiovascular diseases, because oolong tea can not only lower blood pressure and blood lipid, but also reduce blood viscosity, accelerate blood circulation and improve platelet activity.
Inhibit platelet aggregation and eliminate thrombosis, so as to prevent the occurrence of common diseases such as stroke, arteriosclerosis and coronary heart disease.
The disadvantages of drinking oolong tea hurt the stomach.
Drinking oolong tea not only has many benefits to the human body, but also has some disadvantages. This kind of tea belongs to semi-fermented tea. After brewing and drinking, it can cause obvious irritation to human gastrointestinal tract, easily induce abdominal pain and aggravate the symptoms of stomach pain and gastric ulcer.
Induced constipation
Inducing constipation is also a common disadvantage for people to drink oolong tea. Because oolong tea not only stimulates the intestines, but also has a positive convergence effect, which can slow down the peristalsis of the intestines and make the stool dry.
And it will make people have high constipation symptoms. Usually people with indigestion and habitual constipation are not suitable for drinking oolong tea often. In addition, drinking oolong tea regularly will inhibit the absorption of calcium by the human body, and it is easy to induce osteoporosis after a long time.
It can dissolve fat and lower cholesterol.
Oolong tea can dissolve fat and help fat metabolism. Experiments show that drinking one liter of oolong tea every day can inhibit the rise of cholesterol.
However, the specific consumption of oolong tea still depends on everyone's physical condition, but if the food is too greasy, it is best to match oolong tea, which will not only make you feel full, but also remove greasy.
It can activate autonomic nerves and relieve stress.
Oolong tea can improve the activity of autonomic and parasympathetic nerves, prevent overeating caused by excessive stress and the dilemma of eating hard because of anxiety, and help to lose weight.
Improve energy metabolism
In Japan, water, green tea and oolong tea were tested to improve the basic metabolic function, and it was found that water had no special function. Green tea 1 hour can improve the metabolism of 4 calories, and oolong tea is the most.
Can improve the metabolism of 9 calories! And the efficacy of oolong tea can last for 5 hours. So 1 cup of 300cc oolong tea can consume 40 calories (equivalent to walking fast 15 minutes and going up and down stairs 10 minutes).
In the above content, we introduced the benefits and effects of drinking oolong tea. All these benefits mentioned above are very nourishing to our health.
And drinking oolong tea can also improve the quality and nutrition of the body, but oolong tea is also a kind of tea, so pay special attention to the dosage every time you drink it. If we drink too much, we can easily fall asleep.