Abstract
The effect of initial pH and of length of incubation time at 37 C in four different growth media on the production of staphylococcal enterotoxins A, B, and C was determined. A starting pH of 6.8 gave higher yields of enterotoxins B and C than either pH 6.0 or 5.3. The production of enterotoxin A was, however, not materially affected by the low initial pH of 5.3. Prolonged incubation (48 to 72 hr) resulted only occasionally in higher yields of enterotoxin. The effect of the media on the amount of enterotoxin produced is considerable. Difco Brain Heart Infusion (BHI) was inferior to either Fisher BHI, 4% NZ Amine (NAK), or 3% NAK plus 3% protein hydrolysate powder at the three initial pH values, regardless of length of incubation time. The slight effect of the low starting pH on the production of enterotoxin A is being further investigated.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
