Antioxidants are compounds that help the body to fight harmful free radicals. They accomplish this by circulating throughout the system and neutralizing unpaired electrons, rendering them inactive.
The free radicals occur naturally in the body but excess amount increases the risk of coronary attacks and cancer.
Tea is rich in polyphenolic compounds with antioxidant properties, mainly quercetin and catechin, and these compounds may inhibit oxidative damage to DNA, lipid, carbohydrate and protein.
Oxidative damage is associated with various chronic diseases, including cancer, coronary heart disease, cataract and dementia, and it has been suggested that consumption of tea may lower the risk of chronic disease by improving oxidative/antioxidant balance.
Black tea contains a significant amount of theaflavin compounds that make an important contribution to antioxidant activity, but their effectiveness varies with the individual theaflavin.
The domination of theaflavins are simple theaflavin, theaflavin-3-gallate, theaflavin-3’-gallate, theaflavin-3,3’-gallate which comprises 0.3% - 2% of the dry matter of black tea.
Green tea polyphenols are composed of numerous teas of catechin. Studies show that habitual green tea consumption causes in increase in plasma antioxidant status and a quantitative reduction of free radical-induced markers of lipid peroxidation.
Antioxidants in tea
The primary goal of food is to promote our health and general well-being. Food science entails comprehending the characteristics, composition, and behaviors of food constituents in different situations, such as storage, handling, and consumption.
March 11, 2015
The Most Popular Posts
-
Crude fiber is a measure of the quantity of indigestible cellulose, pentosans, lignin, and other components of this type in present foods. ...
-
Gastrointestinal infections caused by Clostridium perfringens , termed enterotoxemias, exhibit a significant impact across various mammalian...
-
Gelatinization occurs when starch granules are heated in a liquid. It is responsible for the thickening of food systems. The process is an i...
-
Crude fat is the term used to refer to the crude mixture of fat-soluble material present in a sample. Crude fat also known as the ether ext...
-
Ash or mineral content is the portion of the food or any organic material that remains after it is burned at very high temperatures. The a...
-
-
-
Most American today are overfed yet undernourished, which eventually leads to obesity and poor health. The answer to those pervasive problem is simply to ...