The higher the oxidation rate Otherwise, the color of the leaves will be darker. Black tea is completely oxidized, so it has a darker color and stronger taste compared to other types of tea. To make green tea, the leaves are immediately heated to kill the enzymes that are involved in the oxidation of the tea. Therefore, green tea is not an oxidized tea. Oolong tea is semi-oxidized and white tea is made from young leaves that are slightly oxidized.
Black tea is the most popular type of tea, accounting for approximately 75% of the world's tea consumption. But in Japan and China, green tea is more popular. Around the world, people use oolong tea and white tea less than other types of tea. In this article from BingMag Meg, we talk about the amount of caffeine in tea, the benefits of caffeinated and decaffeinated teas, as well as the side effects of high caffeine consumption. Follow us to the end of this article.
How much caffeine is in tea?
There is a lot of research that shows that drinking tea can improve your health. In fact, the presence of the following compounds in tea has made it a healthy and useful drink for the body:
- Antioxidants: These compounds prevent oxidative damage Or delay its occurrence. Therefore, they can reduce the risk of diseases such as heart disease and cancer.
- Phytochemicals: These plant compounds that are naturally present in tea strengthen the immune system. And help reduce the risk of cancer and heart disease.
- Flavonoids: A polyphenolic phytochemical with antioxidant properties.
- Flavonols: are a type of flavonoid that has antioxidant properties.
- Epigallocatechin gallate (EGCG): A type of catechin found in black tea and tea It is found in green and has antioxidant properties.
- Thianine: is an amino acid that can help reduce stress.
Black tea contains the highest amount of caffeine and in every 8 ounces (29.5 ml) between 64 to 112 mg of caffeine is found. Black tea is low in calories, fat, protein, fiber, vitamins or sugar. However, like other teas, it contains flavonoids, phytochemicals, flavonols, theanine and antioxidants that all contribute to good health. The most important benefits of black tea that research has discovered are:
- Increased mental alertness: If black tea is consumed during the day due to caffeine, it can increase the level of Increase alertness and improve attention span.
- Heart attack prevention: People who drink black tea are less likely to have a heart attack. In addition, people who have consumed black tea for at least a year are less likely to die after a heart attack.
- Help treat hypotension: Caffeinated beverages They can help older people with low blood pressure after eating and raise their blood pressure.
- Reduce the risk of ovarian cancer: People who drink tea regularly , Are less at risk for this type of cancer than people who never or rarely drink tea.
per 8 ounces of tea Oolong contains 29 to 53 mg of caffeine. Like black tea, oolong tea is low in fat, sugar, protein and fiber. The amount of energy and nutrients in 100 grams of oolong tea is:
- Energy: 1 calorie
- Calcium: 1 mg
- Magnesium: 1 mg <//>
- Phosphorus: 1 mg
- Potassium: 12 mg
- Sodium: 3 mg
- Zinc: 0.01 mg
- Vitamin B3 or niacin: 0.06 Theobromine: 2 mg
Oolong tea can be effective for weight loss. Animal studies show that regular drinking of oolong tea and other teas helps them lose weight due to the antioxidant EGCG in them. Oolong tea is good for heart health. Because research shows that it lowers cholesterol and thus can prevent heart disease.
Caffeine in green tea is between 24 and 39 mg per 8 ounces. Green tea is fat, sugar or fiber free and contains the following ingredients per 100 grams:
- Energy: 1 calorie
- Protein: 0.22 g >
- Iron: 0.02 mg
- Magnesium: 1 mg
- Potassium: 8 mg
- Sodium: 1 mg
- Zinc: 0.01 mg
Green tea has many health benefits, including:
- Anti-cancer properties and prevention of skin cancer: T Human and laboratory evidence shows that the polyphenols and micronutrients in green tea can prevent skin cancer caused by ultraviolet B (UVB) radiation.
- Treatment of inflammatory skin diseases : Studies show that green tea and its EGCG help reduce inflammation.
- Improved cognitive ability: Evidence suggests that between green tea and There is a reduction in the risk of cognitive impairment.
Every 8 ounces of white tea contains between 32 and 37 milligrams of caffeine. White tea is nutritionally similar to green tea and is less processed than other types of tea, meaning it has more antioxidants. The most important health benefits of white tea are:
- Keeping the heart healthy
- Protecting the body from the harmful effects of the sun's ultraviolet rays
- Reducing inflammation
- Weight Loss
- Improving Cognitive Ability
Which tea is decaffeinated?
If the caffeine content of tea is every 8 ounces Less than 12 mg is classified as a decaffeinated tea. Caffeine is not measurable in many natural herbal teas and is therefore considered caffeine-free.
Best Decaffeinated tea
Many teas are either decaffeinated or caffeinated its very low. You can usually find decaffeinated black, green or white tea in stores, but many herbal teas are naturally caffeinated. The best decaffeinated herbal teas and teas are: rhubarb tea or red tea
tea is made from the leaves of the Aspalathus linearis plant. This decaffeinated tea has been used in South Africa for centuries. Animal studies show that supplements containing rooibos help protect the liver against oxidative stress and can lower blood pressure. Hibiscus tea or sour tea Hibiscus leaf extract has anti-tumor and antioxidant properties and helps maintain cardiovascular health and control blood pressure.
Chamomile tea improves sleep in Helps people with insomnia. It also has antioxidant properties and can lower blood cholesterol and improve cardiovascular health. Turmeric tea Research shows that the curcumin in turmeric is the color of The yellow of this spice is derived from it, it has antioxidant, anti-inflammatory, anti-viral and anti-bacterial properties and strengthens the immune system.
What are the side effects of caffeine?
Caffeine overdose can Harmful to health. The US Food and Drug Administration (FDA) recommends limiting your daily caffeine intake to less than 400 mg (equivalent to about 4 to 5 cups of coffee). Excess caffeine intake can lead to negative and dangerous effects, including: Insomnia
- Increased heart rate
The following people should avoid caffeine Avoid or minimize:
- Pregnant or lactating women
- People with sleep disorders
- Patients with high blood pressure
If you want to reduce caffeine intake or eliminate it from your diet, you can use decaffeinated teas. Some herbal teas and teas, such as rooibos tea, sour tea, and chamomile tea, are decaffeinated.This is for educational and informational purposes only. Be sure to consult a specialist before using the recommendations in this article. For more information, read the BingMag Meg Disclaimer .