Caffeic acid is usually yellow in color and crystalline in shape. This substance naturally exists in the form of ester and glucoside in traditional Chinese medicine plants such as Wormwood, vegetable thistle and honeysuckle. Caffeic acid is not only a metabolite in the synthesis of lignin, but also an intermediate product in the metabolism of phenylpropane in tobacco. It is widely used in medicine, health care products and other fields.
Caffeic acid in tobacco is an important index to measure the quality of tobacco. It is present in tobacco as a phenolic substance. Caffeic acid plays a key role in color, aroma and quality in tobacco production. In the case of tobacco, caffeic acid can be used to judge its quality.
Caffeic acid can be prepared by condensation, demethylation and hydrolysis of 3, 4-dihydroxybenzaldehyde, 3-methoxy-4-hydroxybenzaldehyde, 3, 4-dimethoxy-benzaldehyde, 3, 4-methylenedioxybenzaldehyde and substituted cinnamates.
Caffeic acid in the medical industry can play antibacterial, antiviral, antioxidant, anti-cancer, immune regulation and other functions, in the prevention and treatment of various bleeding symptoms has a good effect, in addition, it can play a positive role in the treatment of tumors and cancer diseases.