/Tag: staining

Bacterial Capsule: Function, staining, procedure

Bacterial capsule A gelatinous layer of polysaccharide or polypeptide is called Glycocalyx. These polysaccharides may be composed of a single type of sugars (homopolysaccharide) or several types of sugars (heteropolysaccharides) and lies outside the cell envelope of bacteria. If glycocalyx is firmly attached to the cell wall it is referred to as a capsule. [...]

By | 2018-04-14T10:28:57+00:00 April 14th, 2018|Fermentation, Food Microbiology|Comments Off on Bacterial Capsule: Function, staining, procedure


Gram’s staining Bacteria differ from one another chemically and physically and may react differently to a given staining procedure. This is the principle of differential staining. Differential staining can distinguish between types of bacteria. The Gram stain is the most useful and widely employed differential stain in bacteriology. The method was developed by Hans [...]

By | 2018-04-03T04:33:47+00:00 April 3rd, 2018|Fermentation, Food Microbiology|Comments Off on Staining

Types of staining

Staining means coloring of microbes with a dye that colors the microbe to emphasize or elucidate different important structures like cell wall or other cellular organelles of microorganisms including bacteria, virus, protozoa and etc. Staining is done to: Highlight the different parts of microorganisms to enable it to be seen under microscopes. Differentiate various [...]

By | 2018-02-27T07:53:38+00:00 February 21st, 2018|Fermentation, Food Microbiology|Comments Off on Types of staining

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