Journal of Pure and Applied MicrobiologyVol. 8 No. May 2014 Special Edition

Evaluation of Extracts from Different Parts of Some Tree Species against the Growth of Human Bacterial Pathogens

Hayssam M. Ali1,3*, Mohamed Z.M. Salem2 and Nashwa H. Mohamed4

1Botany and Microbiology Department, College of Science, King Saud University, P.O. Box 2455, Riyadh 11451, Saudi Arabia. 2Forestry and Wood Technology Department, Faculty of Agriculture (EL-Shatby), Alexandria University, Alexandria, Egypt. 3Timber Trees Research Department, Sabahia Horticulture Research Station, Horticulture Research Institute, Agriculture Research Center, Alexandria, Egypt. 4Agricultural Research Center, Horticulture Research Institute, Forestry Department, Antoniades Gardens, Alexandria, Egypt.

Received on 11 March 2014 and accepted on 08 May 2014



In the present study the methanolic extracts from Ficus retusa L. (fruits), F. benghalensis L. (fruits), Schinus terebinthifolius Raddi (fruits), Erythrina humeana (bark), Delonix regia (bark), Lantana camara L. (leaves), Syzygium cumini L. (leaves), and Cupressus sempervirens L. (leaves), and the water soluble exudate gum from Meryta sinclairii (wood exudate gum) were evaluated for their antibacterial against four human pathogenic bacteria namely; Micrococcus luteus, Staphylococcus aureus, Acinetobacter baumannii and Pseudomonas aeruginosa. The bioassay was evaluated at a concentration of 2000 ?g/mL using the disc-diffusion method. The extracts were shown a variation in the inhibition zones ranges from 7-22 mm. The present results could be useful for further work related to the bioactivity agents for controlling the infectious diseases caused by human bacterial pathogens.

Keywords : Antibacterial; Methanolic extract; Tree species.