Journal of Pure and Applied MicrobiologyVol. 6 No. 4

In vitro Comparative Evaluation of Antibacterial Activity of Fruiting Body and Mycelial Extracts of Ganoderma lucidum against Pathogenic Bacteria

Sheetal Mehta* and Savita Jandaik

Faculty of Biotechnology, Shoolini University of Biotechnology and Management Sciences, Solan, Himachal Pradesh - 173 212, India.

Received on 08 April 2012 and accepted on 14 May 2012

 

ABSTRACT

A wide variety of organisms are emerging as resistant to antibiotics, and multiple drug resistant organisms pose a serious threat to the treatment of infectious diseases. Hence, mushroom derived antimicrobial substances have received considerable attention in recent years. In this study antagonistic effects of the methanol, acetone and water extracts of mycelia and fruiting body of Ganoderma lucidum were tested against seven bacterial species: Escherichia coli, Staphylococcus aureus, Bacillus subtilis, Pseudomonas aeruginosa, Enterobacter aerogenes, Klebsiella pneumoniae, and Salmonella typhimurium. All the extracts exhibited various degree of inhibition against all test bacteria. Widest inhibitory zone (33mm) was obtained with mycelial acetone extract of Ganoderma lucidum against Pseudomonas aeruginosa. Lowest zone of inhibition (7mm) was observed with fruiting body aqueous extract against Staphylococcus aureus and Klebsiella pneumoniae. Minimum inhibitory concentration (MIC) of acetone extract of fruiting body and mycelial extract was determined, for mycelial extract it ranged between 4 to 12mg/ml and for fruiting body extract it ranged between 15 to 35 mg/ml for test bacteria.

Keywords : Ganoderma lucidum, Antibacterial activity, Bioactive molecules, Extraction.