The extracts of Coptidis japonica(rhizoma), Eugenia caryophyllata(flower), Rheum palmatum(rhizoma), Magnolia officinalis(cortex) and Rhus javanica (galla rhois) potently inhibited the growth of Helicobacter pylori(HP). However, these herbal extracts s...
The extracts of Coptidis japonica(rhizoma), Eugenia caryophyllata(flower), Rheum palmatum(rhizoma), Magnolia officinalis(cortex) and Rhus javanica (galla rhois) potently inhibited the growth of Helicobacter pylori(HP). However, these herbal extracts showed no inhibitory effect on HP urease except Galla rhois. Among the components separated from active herbal extracts by silica gel column chromatography, the inhibitory effects decursinol angelatc and decursin on the growth of HP were the most potent, followed by magnolol, berberine cinnamic acid, decursino1 and gallic acid. Minimum inhibitory concentrations (MICs) of decursin and decursinol angelate were 6-20 ㎍/ml