Coliform bacteria - Wikipedia
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] . They can be aerobes or facultative aerobes, and are a commonly used indicator of low sanitary quality of foods, milk, and water. [2] .
Coliform Bacteria - Penn State Extension
2022年10月31日 · 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 …
Coliform Bacteria - an overview | ScienceDirect Topics
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.
Coliform bacteria | Characteristics & Examples | Britannica
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. More precisely, they are evidence of recent fecal contamination of water supplies.
Coliform Bacteria- Characteristics, Examples, Identification
2022年5月25日 · 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. 1. Total Coliform (TC) 2. Fecal Coliform (FC) / Thermotolerant Coliform. 3. E. coli. 1.
Coliform Bacterium - an overview | ScienceDirect Topics
Coliforms are an important group of the family Enterobacteriaceae, which constitute about 10% of intestinal microflora. General species of Coliforms include Citrobacter, Enterobacter, Hafnia, Klebsiella, Escherichia, etc. They are bacterial indicators of sanitary quality of food. Hence they are being used in microbiology.
Coliform Bacteria - an overview | ScienceDirect Topics
Coliform bacteria are defined as facultatively anaerobic, Gram-negative, non-spore-forming rods that ferment lactose vigorously to acid and gas at 35 ± 2 °C within 24 or 48 h.
Coliform Bacteria – Definition, Classification, Examples
2024年3月28日 · Coliform bacteria are either motile or non-motile Gram-negative, non-spore-forming Bacilli with -galactosidase that create acids and gases at their optimal growth temperature of 35-37°C. Aerobes and facultative aerobes are a …
Coliforms are Gram-negative, rod-shaped facultatively anaerobic bacteria. Identification criteria used are production of gas from glucose (and other sugars) and fermentation of lactose to acid
大肠菌群，肠杆菌科，大肠杆菌？你还傻傻分不清楚吗
2020年6月16日 · 大肠菌群是一个基于源头和致病风险而引申出的，具有重要应用意义的概念，也是重要的食品卫生学指标。 与肠肝菌科不同的是，大肠菌群coliform并不是一个细菌分类学概念。 也就是说，在正规分类学谱系中，是找不到“大肠菌群”这个定义的。 生化属性方面，它和肠肝菌科相同处很多：短小杆状，兼性厌氧，不生成孢子的革兰氏阴性。 但是它与肠杆菌科最大的区别在于， 它能在人体温度37° C下发酵乳糖，进而产酸或产气。 肠杆菌科中最重要的若干门类因此被 …