What is the chemical composition of tea?
Eight catechins, caffeine, theaflavine, gallic acid, chlorogenic acid, ellagic acid, and kaempferol-3-G are the main chemical compounds in tea [12,13]. The drinking of more than 5 liters of tea per week may result in dental or skeletal fluorosis [4]. Mercury, lead, arsenic, and cadmium as well as other toxic elements have been found in tea leaves as described in the literature [5, 6]. Lead, arsenic, and cadmium have also been found in brewed black tea [7].Various studies have proved that tea consumption has both positive and negative effects on human health (AL-Oud, 2003, Salahinejad and Aflaki, 2010). Tea infusion may be an important source of essential major dietary inorganic elements such as calcium, magnesium, potassium, fluoride.Through literature review and data search, it is known that tea contains more than 500 chemical compounds and more than 450 organic compounds, including polyphenols, alkaloids, terpenoids, flavonoids, amino acids, vitamins, etc.Significant components of tea also include important minerals such as copper, manganese, iron, zinc, magnesium, calcium, sodium, and potassium [10]. Minerals are incorporated in all tissues of the body and are involved in many life processes by determining their correct course [25,26,27].
What is the main constituent of tea?
As a natural herb, tea’s primary components are tea polyphenols, amino acids, alkaloids, sugars, proteins, pectin, aromatic substances, enzymes, and organic acids. From what we know today, the most important compounds in fresh tea leaves are polyphenols, amino acids, enzymes, pigments, carbohydrates, methylxanthines, minerals and many volatile flavor and aroma compounds. These components are responsible for producing teas with desirable appearance, aroma, and taste.Green Tea. Green tea is often touted as the healthiest tea. It is chock full of polyphenols and antioxidants that help to boost brain and heart health. Green tea is considered one of the least processed true teas as it does not undergo oxidation.Tea leaves contain large amounts of elements such as K, Na, Ca, Mg, Al and Mn. Elements in tea infusions occur in combination with both organic and inorganic matter. They can be present in the cationic form and non-cationic fractions.Green tea is proven to be a good source of vitamins A, C, E and many of the B vitamins. There are 13 essential types of vitamins: A, C, D, E, K and B vitamins (Thiamine (B1), Riboflavin (B2), Niacin (B3), Pantothenic acid (B5), Biotin (B7) Folate (B9), Pyroxidine (B6), Cobalamin (B12).
What are the chemical constituents of tea?
A ‘Chemical Constituent’ refers to the individual chemical components that make up a mixture or product in the chemical industry. These constituents play a crucial role in determining the physical and chemical properties of the final product. Chemical composition refers to the arrangement, type, and ratio of atoms in molecules of chemical substances. Chemical composition varies when chemicals are added or subtracted from a substance, when the ratio of substances changes, or when other chemical changes occur in chemicals. How Much Sodium?