التحري عن النشاط التضادي لبكتريا Bacillus subtilus في نمو بعض الأحياء المجهرية المرضية

Abstract

The study concluded the discovery and investigation of the ability of bacteria bacillus subtilus to produce the secondary metabolism ( antibiotic ) and to consider its activity in dampening the growth of  pathogenic microorganism which is represented by (Klebsiella pneumonia , Escherichia coli , Pseudomonas aerogenosa , and Staphellococcus aureus) and fungi, yeast e.g. (Candida albicansg, Cryptococcus neoformans).

    We also used different consentration from CFU in the contrastive study . The activity  increased to reach its maximum at the concentration 100 mg/ ml which has the ability to dampen all types of bacteria by diameters dampening  which ranged from (0.9-20) mm , while the fungi and yest diameter damping which ranged from (18.6-30.2) mm. And also the value of MIC and MBC was specified.