Why green tea content has caffeine? Bigelow and Lipton caffeine content.

Do you know, why green tea content has caffeine? Did you hear about Bigelow and Lipton caffeine content? A conventional tea contains no caffeine, but it has the  analog, which called Thein. 

The action of theine somewhat milder than the caffeine does, while also it activates the power of the human brain, improves mood, and with help of it the efficiency and activity. Small doses of caffeine at moderate consumption of green tea leaves tone, help to relieve the fatigue, increase the physical and mental activity of person.

In the tea caffeine contained in the largest amount – from 2 to 4% by dry weight of tea. Caffeine in tea was discovered in 1827. Later it was proved that theine and caffeine are identical. A cup of tea comprises from a half to a third dose of caffeine, which is contained in a cup of coffee with the same volume. However, if we measure the caffeine content in the dry product, so tea contains it more than coffee.

The amount of caffeine in tea depends on the cultivars, harvest time, the method of processing the leaves or beans, storage, etc. “Decaffeinated” tea still is not liberated completely from caffeine. It contains about 3% of the substance of initial content.

The earlier tea leaves are gathered, the less of caffeine is in them. Sorts of tea with small leaves have a higher concentration of caffeine. The first and second leaves of the tea plant contain 3% of caffeine more than other leaves.

Green tea has less caffeine than black long leaf tea: on average 1.5-2.3% against 2-3,3%. But if again compared with the coffee, in the cup of tea is about 5-8 times less caffeine. After all, for brewing tea people take only 0.4 g of dry tea, which corresponds to 0,012 g of caffeine (in cup of coffee is about 0.05 – 0.1 g). Is it a lot or a little to  effect on the human body? The amount of caffeine in a cup of tea with its usual dose of tea infuser is below the dose of excitatory the brain activity and oppressing the blood vessels of the heart. In other words, tea has soft effect on the body and is not very hard  for it. Note, however, that under the influence of caffeine contraction of the heart is more frequent. Therefore, palpitation sensation after a cup of tea is a signal about the transition the permissible limits.

 The caffeine content in Bigelow and Lipton green tea

The difference in composition of caffeine is in that each mark differs. For example, the presence of it in the brand of coffee «Bigelow» reaches 100-120mg, in black tea – 30-60mg, and green tea – 25-50 mg. It even is present in the decaffeinated coffee in  volume of 1-8mg. In the herbal tea its content is zero. Bigelow green tea has the average of caffeine content; but some products of the same brand may vary.

In the book of Murray Carpenter “On the caffeine: useful and harmful habit” describes a research that Bruce Goldberger conducted, a judicial pathologist, who has studied the content of caffeine in different drinks. He found that the caffeine content increases with the duration of the brewing process. For example, a bag of Lipton, which was keeping  in boiling water for one minute, gave only 17 milligrams of caffeine, but after three minutes in the cup was already 38 milligrams, and after five – 47.

Most of tea in bags,  when tea leaves are brewing for three minutes, give from 25 to 50 milligrams of caffeine, about half of KFOR. Surprisingly, the conclusion of Goldberger did not confirm the popular belief that green tea contains less caffeine than black tea. Goldberger and his colleagues noted that Lipton was the only one of the analyzed teas,  where was stated on the packaging the amount of caffeine per serving. The company reported that 55 milligrams of caffeine was found in a portion of the usual tea and 5 milligrams – per serving decaffeinated.