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Other food poisoning bacteria test

Last update date April 2, 2024

Other food poisoning bacteria

It is not classified into either infectious or toxin type.

Welsh fungus

Village of Welsh bacteria growing on egg yolk CW agar culture
Welsh bacteria on egg yolk CW agar medium

It is widely distributed in nature and is resident in the soil, water, human and animal intestines. It may form a shell called spores, and may survive even if heated at 100°C for 1 to 6 hours. In addition, since this bacterium grows under anaerobic conditions with low air, it is likely to become a causative food when a large amount of curry and stew.
Inspection methods
After inoculation in egg yolk CW agar medium, after anaerobic culture, the typical colony is sterilized using a cooked medium medium, and a property test is performed to confirm.

Cereus

Village of Celeus bacteria growing on NGKG agar culture
Celeus bacteria on NGKG agar medium

It is widely distributed in nature, such as soil and dust, and usually forms spores and germinates when conditions are met. It is resistant to heat and is a type of spoilage bacteria in food.
It is often caused by foods that are made from crops such as grains.
Inspection methods
Inoculated in NGKG agar medium, a property test is performed for a typical colony to confirm.

Pathogenic Escherichia coli (diarrhea Hara Escherichia coli)

Escherichia coli is a type of bacteria that constitutes the intestinal flora of various animals, including humans, but the feces excreted from these animals is widely distributed in the natural world as a result of polluting various things. I am.
Among them, there are types that cause diarrhea in humans, collectively referred to as pathogenic Escherichia coli, and typical ones such as "O157" and "O26".
Enterohemorrhagic Escherichia coli produces verotoxin and can cause complications such as hemolytic uremic syndrome (HUS), but may not develop when infected.
As a precaution, wash your hands thoroughly, wash the ingredients well and heat them sufficiently (at the center is 75 ° C for at least 1 minute).
In yakiniku, etc., care must be taken when handling tongs and chopsticks used, such as separating raw meat and eating. Also, don't drink well water.
If infected, consult a doctor immediately and be careful not to spread the contamination of the infected person's stool.

For inquiries to this page

Medical Care Bureau Health and Safety Department Central Wholesale Market Home Food Sanitation Laboratory

Phone: 045-441-1153

Phone: 045-441-1153

Fax: 045-441-8009

Email address: ir-honjo@city.yokohama.jp

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Page ID: 937-122-468

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