Evaluation of antimicrobial activity of Cinchona calisaya bark on Staphylococcus by agar well diffusion method

Cinchona is an important genus and comprises a large number of evergreen trees and shrubs, flowers white and pinkish arranged in panicles, very fragrant. Calisaya yields the largest amount of this alkaloid of any of the species - often 70 to 80 per cent of the total alkaloids contained in the bark which is not collected from trees growing wild, but from those cultivated in plantations. The present study was conducted to investigate the antibacterial activity of Cinchona bark. The antibacterial activity was tested against Staphylococcus using agar disc diffusion method.