Salmonella Lecture Review

Flashcards about Salmonella

What family does Salmonella belong to?

A member of the Enterobacteriaceae family.

How many serological types of Salmonella are there?

More than 2000.

What types of foods are common vehicles for Salmonella transmission?

Foods of animal origin like meat, eggs, poultry, milk, and fish.

Besides animal products, what other foods can transmit Salmonella?

Cereals and green salads.

What is the purpose of non-selective enrichment?

To restore injured cells to their normal physiological conditions.

What is the purpose of selective enrichment?

Allows increase in Salmonella level while restricting non-Salmonella organisms.

Give an example of a biochemical test used in Salmonella identification?

API and enterotube.

What is a method used in Salmonella Identification?

Serotyping.

Why is buffered peptone water used when preparing a food homogenate?

To prevent cell injury.

What broth is used to perform selective enrichment of Salmonella?

Selenite cystine broth.

How does Brilliant Green Agar work?

It inhibits G+ve bacteria and contains a pH indicator.

What do typical Salmonella colonies look like on Brilliant Green Agar?

Pink to fuchsia or translucent to opaque colonies.

What is the selective agent in Bismuth Sulfite Agar?

Bismuth sulfate.

What is the differential agent in Bismuth Sulfite Agar?

Ferrus sulfite.

What color are typical Salmonella colonies on Deoxycholate Citrate agar?

Colorless colonies.