tannins

• 
• tannins are naturally occurring polyphenolic compounds found in various plants. they are known for their ability to bind and precipitate proteins, which makes them important in various industrial and medicinal applications. tannins are responsible for the astringency in certain fruits, wines, and teas.

chemical properties

• molecular weight: varies depending on the specific tannin compound
• density: typically around 1.2-1.5 g/cm³
• boiling point: decomposes before boiling
• solubility: soluble in water, alcohol, and acetone
• optical rotation: varies depending on the specific tannin
• chemical formula: varies; common formulas include C76H52O46 for some hydrolyzable tannins

usefulness in medicine

• tannins have been used in traditional medicine for their astringent, anti-inflammatory, and antimicrobial properties. they can help in wound healing and reduce inflammation. modern research has focused on their potential anticancer, antiviral, and antibacterial activities.

antimicrobial activity

bacteria

• staphylococcus aureus: research link
• escherichia coli: research link
• pseudomonas aeruginosa: research link
• streptococcus mutans: research link

fungi

• candida albicans: research link
• aspergillus niger: research link

viruses

• influenza virus: research link
• herpes simplex virus: research link

references

• 1. tannins: chemistry and biological properties
• 2. antimicrobial properties of tannins