Indole test (Left: negative; Right: positive) Indole test is used to determine the ability of an organism to split amino acid tryptophan to form the compound indole. It is used as part of the...
Category: Bacteriology
A. Aerobic Bacteria Main Principle: Provide Oxygen Atmospheric condition is generally satisfactory for the culture of aerobes or facultative anaerobes but for the growth of many aerobes, it is...
Membrane filters have a known uniform porosity of predetermined size (generally 0.45 µm ) sufficiently small to trap microorganisms. Using the membrane filter technique, sample is passed through the...
Once a microorganism has been isolated and grown in pure culture, it becomes necessary to maintain the viability and purity of the microorganism by keeping the pure culture free from contamination....
Enumeration of microorganisms is especially important in dairy microbiology, food microbiology, pharmaceutical microbiology, and water microbiology. The number of microorganisms in a culture,...