- +Products
- +Allergen testing
- +Culture Media - reagents and reference material
- +Environmental testing solutions
- +Laboratory Consumables
- +Laboratory equipment
- +Microbiology equipment
- +Neogen® Food Safety Solutions
- +Temperature & Humidity Monitoring
- Services
- Support
- News
- +About Us
- Contact
KF Streptococcus Agar (Base)
KF (Kenner Fecal) Streptococcus Agar is a selective medium used for the isolation and enumeration of enterococci in food products by using classic enumeration techniques on Petri plates.
It is also recommended in the standard for the composition of acidifying lactic starters in dairy products (ISO 27205), for the detection of enterococci as contaminants.
Available as dehydrated medium : 500 g bottle
In compliance with regulatory requirements, a USDA permit (VS 16-3) is mandatory for shipments from Canada to the USA due to the inclusion of peptone, an animal byproduct.
The high nutritive capacity of the medium is due to the presence of a high proportion of polypeptone, yeast extract and carbohydrates.
Sodium chloride maintains the osmotic equilibrium.
Lactose and maltose are energy sources for microorganisms that can use them.
The acidification of the medium is shown by bromocresol changing from purple to yellow.
Sodium azide inhibits the growth of contaminating Gram-negative bacteria.
TTC added just before use is an indicator of bacterial growth. It is reduced to an insoluble formazan inside cells. This reaction is visualized by the appearance of red to maroon colonies.
