Galla Gallnut Extract Tannic Acid

1. Astringent effect Gallic tannin can combine with protein to form water-insoluble macromolecular precipitates. When the skin mucosa and ulcers come into contact with tannin, their tissue proteins are coagulated, forming a layer of membrane and showing astringent effect. At the same time, small blood vessels are compressed and contracted, and blood coagulates and has a hemostatic effect. The coagulation of the protein in the glandular cells causes secretion inhibition, resulting in dry mucosa and precipitation of protein at the nerve endings, which can present a weak local anesthesia phenomenon.
2. Antibacterial effect Gallic extract has different degrees of inhibitory effect on Gram-negative bacteria such as Pseudomonas aeruginosa, Shigella dysenteriae, Proteus, Escherichia coli, Clostridium perfringens, Salmonella typhi and Gram-positive bacteria such as Staphylococcus aureus, Staphylococcus aureus, Streptococcus B, Pneumococcus, Corynebacterium diphtheriae, and Bacillus anthracis. It also has a strong inhibitory effect on some pathogenic fungi. It has an inhibitory effect on influenza A PR8 strain virus inoculated into chicken embryos. Its antibacterial mechanism is related to the coagulation effect of tannins on proteins. In addition, it is also related to other components. After removing tannins, the gallnut liquid still has antibacterial effects.
3. Anti-fertility effect 100% gallnut glycerol solution has a good spermicidal effect, so this product has a certain anti-fertility effect.
4. Liver protection and antioxidant effect Gallnut tannic acid can prevent the nitration of aminopyrine in the stomach, and has a significant antioxidant effect, which may inhibit the carcinogenic process of nitrosamines. Intragastric administration of gallnut tannic acid has a protective effect on acute liver damage caused by CCl4.
5. Anti-ulcer effect The compound gallnut liquid with gallnut extract as the main ingredient can significantly reduce the amount of bleeding and shorten the bleeding time for gastric mucosal bleeding, and can significantly reduce the secretion of gastric juice and gastric acid. 6. Inhibitory effect on smooth muscle Gallic acid and esters can inhibit the astringent effect of bradykinin on the ileum of guinea pigs.
7. Detoxification effect: Gallic tannin can form insoluble complexes with many heavy metal ions, alkaloids and glycosides, which has a detoxification effect, so it can be used as a chemical detoxifier. The hydrolyzed tannin in gallic tannin can also reduce the content of urea toxins in the blood of patients with renal failure.