Abstract
Effects of incubation temperatures of 21 and 32°C, incubation time, and pH control at 6.0 on alcohol dehydrogenase (E.C.1.1.1.1., alcohol: nicotinanide dinucleotide alcohol dehydrogenase oxidoreductase) activity were evaluated for batch cultures of Streptococcus lactis 60 and C2 in Elliker broth. Without pH control, alcohol dehydrogenase was maximal in both strains after 6h incubation and declined with increasing incubation of stationary phase cells. Increasing growth temperature increased optical density and plate count data at 6h incubation for both strains. Alcohol dehydrogenase activity of 6h cells of Streptococcus lactis 60 was higher with 32°C than with 21°C incubation. For Streptococcus lactis C2, increasing incubation temperature resulted in lower detectable alcohol dehydrogenase activity at 6h incubation. Controlling growth pH at 6.0 increased growth and increased alcohol dehydrogenase activity. Alcohol dehydrogenase activity of Streptococcus lactis grown with pH control did not decline as dramatically during increased incubation time as that of Streptococcus lactis grown without pH control.
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.
