Abstract

ANTIMICROBIAL ACTIVITIES OF SYNTHESIZED ALLICIN AGAINST DIFFERENT BACTERIA AND FUNGUS UNDER DIFFERENT PARAMETERS

Faisal Rehman, Dr. F. Rehman* and U. K. Jetley

Abstract

The pharmaceutical importance of Allium Sativum is due to the presence of essential metal, carbohydrate, protein, vitamins and organosulpher compounds. Allicin is one of the active ingredient of freshly crushed garlic homogenates and showed a wide spectrum activity. The antimicrobial activity of different concentration of allicin against gram positive and gram negative bacterial isolate was studied by standard protocols. The maximum zone of inhibition has been observed in Bacillus subtitis and mimimum for Proteus mizobills The minimul inhibitory concentration (MIC) varies bacteria to bacteria and fungus to fungus respectively. The effect of temperature and pH were also studied. The antibacterial efficacy was maintained at room temperature for maximum one week and maintains for longer time only at low temperature. Antimicrobial activity of garlic come from allicin, is mainly due to S-S and S-O bond which has the ability to react with thiol containing enzyme to form S-thiolation product, the broad spectrum antimicrobial effects of allicin is due to the multiple inhibitory effects on various thiol dependent enzymatic systems. The results indicate that allicin has antimicrobial activity.

Keywords: allium sativum, antimicrobial activity, Richard’s liquid medium.