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Introduction Food poisoning, also known as foodborne illness, is a widespread and potentially serious public health concern that occurs when individuals consume contaminated or spoiled food. It is caused by the ingestion of harmful microorganisms such as bacteria, viruses, parasites, or their toxins, which can …
List of Some Typical Arrangements of Bacteria In this chapter, we discuss some typical arrangements of bacteria like Staphylococcus, Streptococcus, pneumococcus, Enterococcus, Micrococcus, Neisseria species, Bacillus anthracis, Diphtheroids, Corynebacterium diphtheriae, Listeria monocytogenes, Vibrio cholerae, Campylobacter, Helicobacter, Treponema, Leptospira, Borrelia, etc. S.No. Arrangements Organisms 1. Gram-positive cocci …
Introduction of Blood Agar Blood agar is an enriched medium for the cultivation of bacteria. Fastidious organisms, such as streptococci, do not grow well on ordinary growth media. It is a type of growth medium i.e. trypticase soy agar enriched with 5% sheep blood or blood agar base with 5-10 % sterile …
Introduction of Oxidase Test (Kovac’s Method) Gordon and McLeod introduced the application of a dimethyl-phenylenediamine dihydrochloride solution to test for the presence of oxidase systems in 1928. In particular, they used the test to differentiate N. gonorrhoeae (oxidase test positive) from Staphylococcus species and Streptococcus species (oxidase negative). The sensitivity of the …