Inhibitory activity of fourteen mangrove plants against animal pathogens
14 种红树植物对动物病原菌的抑菌活性

The inhibitory activity of methanol extracts from fourteen mangrove plants and two isolated compounds against Escherichia coli, Pseudomonas aeruginosa, Salmonella typhi, Shigella dysenteriae, Proteus vulgaris, Staphyloccocus aureus, Micrococcus luteus, Micrococcus lysodeikticus and Bacillus cereus was determined using plate culture medium coating method. The results showed that the extracts of Clerodendrum inerme, Excoecaria agallocha, Avicennia marina, Myoporum bontioides, Heritiera littoralis and Lumnitzera racemosa exhibited broad-spectrum antibacteria activity. The inhibitory activity of M. bontioides and E. agallocha was relatively high and the MIC value was 1-4 and 2-6 g/L, respectively. The KLS-46 purified from C. inerme had the MIC values of 0.1, 0.05, 0.1 and 0.05 g/L against S. typhi, S. aureus, M. lysodeikticus and B. cereus, respectively, but showed almost inactive against the other five pathogens with MIC value more than 0.4 g/L. The M. luteus and B. cereus were more sensitive to the extracts from mangrove plants.