Green tea is consumed widely and is made from unfermented Camellia Sinensis plant leaves. It has its roots in China and India before the rest of the world gained access to this amazing tea. It is highly concentrated with polyphenols. Polyphenols is an antioxidant, which is highly present in green tea in comparison to other teas such as oolong and black tea. This tea has numerous health benefits, but it also contains caffeine. This means that when a person overindulges or when it is ingested before bed, it can negatively affect your ability to fall asleep. This will eventually affect your sleep pattern.
Have you ever taken green tea before bed? What did you notice? Is your sleep pattern same as before? These are questions that you need to ask and answer to enable you to get back that healthy sleep pattern. This read will help you understand the stimulating factor in green tea.
Green tea contains caffeine. This does not mean that you cannot gain access to green tea that does not contain caffeine. Some brands of this tea are purchased when they have already been decaffeinated. Most people assume that the caffeine content in the tea is less in comparison to other teas. This is because of the misconception that green tea is healthier than other tea types. The content of caffeine in green tea depends on other surrounding factors. This includes the steeping period of the tea, the preparation method of the tea, the manufacture conditions, the environment and method of growing the tea, the tea leaves cultivar, and the tea age when it undergoes harvesting.
Method of Decaffeination
Just like other teas, green tea can also undergo decaffeination. The decaffeination process uses three methods. They include –
- Commercial decaffeination: This method uses carbon dioxide or ethyl acetate to reduce the caffeine content in the leaves of the plant. This reduction process supports up to 0.4% of the dry weight of the tea. This method is not popular because it leads to a two-thirds reduction of the health benefits of the preserved tea.
- Carbon dioxide decaffeination: This is the most preferred method because the health benefits of the tea and its flavor are retained.
- At-home decaffeination: This involves steeping the tea for about twenty seconds then tossing out the water. Thus, the person prepares a new serving of tea with the wet leaves.
It is advised that a person has at most three cups of green tea on a daily basis. This means that a person ingests about 240 to 320 milligrams of polyphenols on a daily basis when the preparation method is steeping a teaspoon of the tea leaves in about eight ounces of boiled water. This is contrary to what American studies advise, which is ten cups of green tea on a daily basis.
Research conducted by the University of Maryland Medical Center shows that a green teacup holds about fifty to one hundred and fifty milligrams of polyphenols for every serving. When a green tea extract is used, it is advisable for a person to measure between one hundred to seven hundred and fifty milligrams of the extract.