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tannin
The chemical formula for tannin can vary depending on the specific type or source. However, in general, tannin is a complex mixture of polyphenolic compounds, predominantly composed of gallic acid units.
Tannin . It is used for ink and dyes and in the leather making industry.
Tannin is the substance found in Redwood Trees that benefits them. The tannin helps to keep bugs and fungi away.
Oak trees were flawed to abstract the tannin rich sap as it went up in the spring time. it was used to tan leather.
Tannin solutions are acids responsible for the color and some flavor in tea.
Tannin
Tannic acid is a type of tannin that has a specific chemical structure, while tannin refers to a larger group of compounds found in plant tissues. Tannic acid is a more specific form of tannin with stronger astringent properties.
Tannin in coffee contains approximately 90,000 ppm. Tannin is also found in other products including red wines and apple cider.
Water
tannin
Foods that contain tannin include red wine, apple juice, apple cider, pears and red-skinned apples. Some people are sensitive to tannin and it can trigger migraines.