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How many calories does tea have?
Table of Contents
1. Tea has a chemical composition
The chemical composition of tea depends on its type. There are about 300 different substances in tea leaves. Fresh leaves are made up of 25% carbohydrates, 15% protein and 2% fat. They also contain vitamins (groups B, C and K) and mineral ingredients (calcium, manganese, iron, potassium, silicon, phosphorus and iodine). However, the beneficial properties of tea steams are attributed to substances such as polyphenols, herbs, theophylline, theobromine and caffeine.2. Tea as a source of manganese
Tea is a very good source of manganese. This element is very important for the body because it is involved in the metabolism of carbohydrates, proteins and fats and the body's defense reactions. In addition, it is essential for the building of bones and the production of red blood cells. It also plays an important role in reproductive processes and the functioning of the nervous system.3. Average manganese content [mg/100 g] in different types of tea
Torebkov Leaflet 41, 0 ± 18, 0 62, 2 ± 34, 2 Tirebkov leaflet 92, 1 ± 37, 3 98, 1 ± 34, 3 Toreebkov leavlet 74, 5 ± 12, 5 74,5 ± 12,5 Sources: Brezhnev-Cirock J., Grembeck M., Shefer P., Tea as a source of manganese in the daily diet of humans, Bromatology and Toxicological Chemistry 2016, 49(3), 234237.4. Black tea as a source of caffeine
Of all the teas, black tea contains the highest amount of caffeine, which, in addition to its stimulant properties, also promotes urinary activity, excretes hydrochloric acid in the stomach, and irritates smooth muscles, which can lead to inflammation on the surface of the lining of the intestines and stomach.5. Green tea as a source of antioxidants
In the production of green tea, the fermentation stage of the leaf is omitted so that it contains more vitamin C compared to other types of tea. In addition to ascorbic acid, it also contains other antioxidants such as flavonoids and catechins. Polyphenolic compounds have a particularly positive effect on human health, among others: reduce the concentration of so-called bad cholesterol, promote the reduction of fat tissue, thus contributing to body weight loss, neutralize excess carbohydrates, decrease the risk of cardiovascular disease and some novel substances.
