US EPA

1224711 

Journal Article 

ANTIMICROBIAL ACTIVITY OF LEAF EXTRACTS OF CODIAEUM VARIEGATUM (L.) BLUME 

Bhot, M; Saha, M; Phatak, A; Chandra, N 

2010 

4 

1 (Apr 2010) 

17. 

The antibacterial activity of three varieties of Codiaeum variegatum (L.) Blume viz. Norwood beauty, Punctatum aureum and Undulatum, against six different bacterial strains including gram-positive bacteria Arthrobacter, Bacillus subtilis, Corynebacterium diphtheriae and gram-negative bacteria Escherichia coli, Klebsiella pneumoniae, Pseudomonas aeruginosa was studied. Extracts of fresh leaves, dried leaves and fresh callus derived from leaf were prepared using seven different solvents (Acetone, benzene, chloroform, ethanol, methanol, petroleum ether and water). Experiments were carried out by well diffusion and disc diffusion method. The antimicrobial activity was visually recorded by measuring zone of inhibition in millimeters. The zone of inhibition varied with the plant varieties, plant extracts, solvents used for extraction and the organisms tested. The largest zone of inhibition (24.3 mm) was found against Arthrobacter using methanol extract of leaf callus of var. Punctatum aureum. 

Antibacterial activity; Benzene; Bacillus subtilis; Callus; petroleum ether; Gram-negative bacteria; Corynebacterium diphtheriae; Methanol; Codiaeum variegatum; Gram-positive bacteria; Chloroform; Klebsiella pneumoniae; Antimicrobial activity; Ethanol; Escherichia coli; Acetone; Diffusion; Leaves; Arthrobacter; Plant extracts; Solvents; Pseudomonas aeruginosa