Tim Eggleston wrote:
> The question regarding heating the RPMI media to 60 C brought to mind
> a question I've wondered about from time to time. If media, such as
> DMEM or MEM, is left in a 37 C water bath O/N, will be ok to use it
> the next day. I have always advised people to pitch it due to the
> possible degradation of L-glutamine, but I have always wondered how
> much degradation actually occurs, if any. Thanks!
>
IIRC Glutamine at 37 has a "half-life" of about 1 week, and 2 weeks at
RT. Though other factors may affect the media's suitability for use such
as how any ammonium ions from glutamine breakdown are buffered
by other components.
