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The bacterial capsule is a large structure common to many bacteria. [1] It is a polysaccharide layer that lies outside the cell envelope, and is thus deemed part of the outer envelope of a bacterial cell. It is a well-organized layer, not easily washed off, and it can be the cause of various diseases. [2] [3]
The coccoid or bacillary bacteria can be found in soil or wet areas. They are non- sporulating bacteria and Gram-negative . Some species are also pathogenic for humans, so their detection (e.g. with analytical profile index 20 NE) has great relevance in the diagnosis of bacterial infections.
In this scheme, icosahedral capsids contain 12 pentamers plus 10(T − 1) hexamers. [14] [15] The T-number is representative of the size and complexity of the capsids. [16] Geometric examples for many values of h, k, and T can be found at List of geodesic polyhedra and Goldberg polyhedra.
Cultured dextrose is a food additive used to inhibit the growth of undesirable bacteria and mold in food. Often used in place of benzoates and sorbates, it is considered by some consumers to be a more "natural" ingredient, because it is prepared by the fermentation of milk or sugar powders by the probiotic bacteria Propionibacterium freudenreichii and Lactococcus lactis, both of which are ...
Microbial metabolism is the means by which a microbe obtains the energy and nutrients (e.g. carbon) it needs to live and reproduce.Microbes use many different types of metabolic strategies and species can often be differentiated from each other based on metabolic characteristics.
Bacteriophage Qbeta (Qubevirus durum), commonly referred to as Qbeta or Qβ, is a species consisting of several strains of positive-strand RNA virus which infects bacteria that have F-pili, most commonly Escherichia coli. Its linear genome is packaged into an icosahedral capsid with a diameter of 28 nm. [1]
Clinical laboratories can use this growth medium to diagnose and further speciate fungal infections, allowing medical professionals to provide appropriate treatment with antifungal medications. Histoplasma and other fungal causes of atypical pneumonia can be grown on this medium. Sabouraud agar used in combination with additional media, such as ...
Food microbiology is the study of the microorganisms that inhabit, create, or contaminate food.This includes the study of microorganisms causing food spoilage; pathogens that may cause disease (especially if food is improperly cooked or stored); microbes used to produce fermented foods such as cheese, yogurt, bread, beer, and wine; and microbes with other useful roles, such as producing ...