Tea-n-age

 https://pbfy.com/blog/caffeine-levels-in-tea/ Who doesn’t enjoy a great cup of tea? How many of us wonder about the factors that influence the caffeine levels, and quality of different tea varieties? What is Caffeine? It is a stimulant, which naturally occurs in several different plants. Since it is water soluble, it can be extracted into a cup when brewing tea, coffee, or other beverages that contain caffeine. Various factors influence the caffeine levels in tea They include but are not limited to: climate, geographic location, preparation, blends, and environmental changes. For example, tea harvested during peak season tends to have a higher caffeine content than tea harvested out of season.   Tea that is dried and stored over a six-month period tends to have a higher caffeine content than that of freshly manufactured tea. Black tea versus green tea Black tea contains more caffeine than green tea, and dried tea leaves have a higher caffeine content than t...

  Components of Green Leaf INSOLUBLE ELEMENTS -Inorganic components K,Ca, Ph , Mg , Mn , Fe , S ,Al , Na , Si , Zn , Cu -Proteins Contribute to dry weight of green leaf -Carbohydrates They account for 34% of green leaf -Caffeine They constitute 3-4% of unwithered leaf on a dry weight basis Chemically, caffeine is a member of the xanthine family. Caffeine is odorless, has a bitter taste and is highly soluble in hot water. Caffeine occurs naturally in coffee, tea, cocoa, kola nuts and a variety of other plants. In moderation, caffeine has beneficial effects on the body: it increases alertness, stimulates metabolism and contributes to an increase in dopamine levels in the blood, which improves mood. -Lipids & Fatty Acids 3-4% of dry weight of green leaf           -Carotenoids Yellow pigments in green leaf Carotenoid content of tea leaves ranges from 36 to 73 mg/100 g dry weight, and is dominated mainly by β-carotene, lutein and zeaxanthin. Among the cultiv...