Coliform bacteria - Wikipedia
网页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
网页What Are Coliform Bacteria? 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 bact
What to Do about Coliform Bacteria in Well Water
网页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 …
Coliform Bacteria in Drinking Water - Washington State …
网页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 | Characteristics & Examples | Britannica
网页2024年9月13日 · Coliform bacteria are facultative anaerobic (not requiring oxygen) nonsporulating rod-shaped bacteria that contain the enzyme β-galactosidase. The bacteria are also often characterized by their ability to produce acid and gas from the fermentation of lactose sugar, though some species are more efficient at fermentation than others.
E.coli, coliform and indicator 大肠杆菌们的事 - 知乎
网页2023年12月16日 · Coliform的检测与意义. 概述. 在生活和生产中，我们会检测食品、水源中的Coliform情况，以确定食品安全。 一般来说，检测的可信度为：coliform<fecal coliform<E.coli. 这很好理解。 检测范围越范，能确定的内容越少。 coliform是个大范围，所以检测出coliform能提供的信息比fecal的要少。 Indicator. 现实中，人们通过确定某几类指示菌来的存在来确认水源和食品是否被污染。 检测方法. Endo-type agar：这是一种选择性 …
Coliform Bacteria - an overview | ScienceDirect Topics
网页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 …
Coliform Bacteria- Characteristics, Examples, Identification
网页2022年5月25日 · Coliform Definition. WHO defines coliform as “Gram-negative, rod-shaped bacteria, capable of growth in the presence of bile salts or other surface-active agents with similar growth-inhibiting properties, and able to ferment lactose at 35–37°C with the production of acid, gas, and aldehyde within 24–48 hours.
大肠菌群，肠杆菌科，大肠杆菌？你还傻傻分不清楚吗
网页2020年6月16日 · 大肠杆菌E. coli 是大肠菌群的代表菌属。 大多数E. coli是非致病的，在动物和人类肠道内正常寄居。 小部分特殊血清型的大肠杆菌是条件致病菌，可引发胃肠道感染，严重时发生败血性感染， 血性腹泻和溶血性尿毒综合症等。 其中代表性血清型是E. …
Coliform Bacterium - an overview | ScienceDirect Topics
网页Coliforms are a diverse group of microbes, generally made up of the species E coli, Klebsiella, Citrobacter and Enterobacter spp. They have in common these characteristics: all are Gram-negative, non-spore forming, rod-shaped …