Related Experiment Video
Updated: Aug 10, 2026

Growth of Mycobacterium tuberculosis Biofilms
Published on: February 15, 2012
[Action of isoniazid on the growth of saprophytic mycobacteria]
Abstract:
The effect of isoniazide on the ability to assimilate hydrophilic (sugars) and hydrophobic (hydrocarbon) substrates was studied with saprophytic mycobacteria. The minimal concentration of isoniazide inhibiting the growth of saprophytic mycobacteria in a medium containing hexadecane was 150 mcg/ml. If isoniazide was added at a concentration of 900 mcg/ml at the beginning of the logarithmic growth phase, the growth was sharply inhibited and assimilation of the hydrocarbon decelerated 4 times. The same concentration of isoniazide hardly affected the growth of the saprophytic mycobacteria in a medium containing a carbohydrate.
Related Concept Videos
Pulmonary Tuberculosis II
Here is a detailed explanation of its pathophysiology:
Transmission: The process begins when a person inhales droplet nuclei containing M. tuberculosis. These are typically released into the air when an individual with pulmonary or...
Pulmonary Tuberculosis V
Latent tuberculosis infection occurs when TB bacteria are present in a person's body, but are not causing illness or symptoms. It is not contagious, and preventive treatment is crucial to avoid the progression...
Bacterial Phylum Actinobacteria
Tuberculosis
Inhibitors of Bacterial Protein Synthesis

