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Coliform bacteria include a large group of many types of bacteria that occur throughout the environment. They are common in soil and surface water and may even occur on your skin. Large numbers of certain kinds of coliform bacteria can also be found in waste from humans and animals.
Coliform bacteria are defined as either motile or non-motile Gram-negative non-spore forming bacilli that possess β-galactosidase to produce acids and gases under their optimal growth temperature of 35–37 °C. [1]
Coliform bacteria are a large group of many kinds of bacteria, including fecal coliform bacteria, which occur naturally in the intestines of warm-blooded animals. The group also includes non-fecal coliform bacteria. One species of fecal coliform bacteria is Escherichia coli.
Coliform bacteria are organisms present in the environment and in the feces of all warm-blooded animals and humans. Coliform bacteria will not likely cause illness. However, their presence in drinking water indicates that disease-causing organisms (pathogens) could be in the water system.
Coliform bacteria, any of various rod-shaped microorganisms that occur in the intestinal tracts of animals, including humans, and that are widespread in the environment. Coliform bacteria serve as critical indicators of water quality. Learn more about coliform bacteria with this article.
Coliform bacteria are a group of Gram-negative, aerobic, and facultative anaerobic rod-shaped bacteria containing the enzyme – galactosidase that is capable of fermenting lactose-producing acid and gas. They are also called Coli-aerogenes bacteria.
Coliform bacteria are defined as rod-shaped Gram-negative nonspore forming and motile or nonmotile bacteria that can ferment lactose with the production of acid and gas when incubated at 35–37°C. They are a commonly used indicator of sanitary quality of foods and water.
The genera Escherichia, Klebsiella, Enterobacter, Serratia, and Citrobacter (collectively called the coliform bacilli) and Proteus include overt and opportunistic pathogens responsible for a wide range of infections. Many species are members of the normal intestinal flora.
Coliform bacteria are organisms detected by “coliform tests” or selective differential growth media based on the above definition. A variety of media are used to detect coliform in water and foods, including: violet red bile agar. m-endo agar/broth. lauryl tryptose broth. brilliant green bile broth.
Escherichia coli or E. coli is a type fecal coliform bacteria that is commonly found in the intestines of animals and humans. E. coli in water is a strong indicator of sewage or animal waste contamination.