MicrobeWorld App

appsquarebannerad200x200

Join MicrobeWorld

Subscribe via Email

subscribe

Microbes After Hours

MW-Site-Banner-200x200

Click for more "Microbes After Hours" videos

Featured Image

Featured Video

Crowdsourced Microbes Heading to Station

Supporters

ASM House 200X200

6.5% NaCl Media

Slide058.jpg
Important ingredients: 6.5% salt, dextrose, bromcresol purple
Differential/Selective: used to test for salt tolerance and can be used to identify enterococcal group D streptococci. NaCl is a selective agent and those organisms that can grow in higher salt concentrations also ferment the dextrose in the media. This causes acid formation causing the bromcresol purple indicator to turn yellow.
(A) Entercoccus faecalis: Color change from purple to yellow indicating fermentation of the dextrose and salt tolerance.
(B) Streptococcus bovis: No color change or growth.
 
 

Comments (2)

  1. What other microbes can to grow in this medium?
  2. This media is usually used to differentiate between Strep and Enterococcus but I believe Staphlococcus will grow as well since they are salt tolerant as well.

Collections (1)

 

American Society for Microbiology
2012 1752 N Street, N.W. • Washington, DC 20036-2904 • (202) 737-3600
American Society For Microbiology © 2014   |   Privacy Policy   |   Terms of Use