Recycling Coomassie destain

Wolfgang Schechinger wgschech at
Thu Jul 24 03:49:20 EST 1997


I suggest distillation of the mix. But I can't warrant that, if you 
store the sol'n, that you also will get methyl acetate since MeOH and 
HOAc will react (in a chemical equilibrium) to the ester. I only can 
say that I used a premixed sol'n stored at RT for more than three 
weeks without problems.

You alternatively could switch to a more water soluble dye a ponceau 
red, that is easily destained with a buffer containing gelatin or 
othe proteins.


> Dear colleagues,
> In order to reduce the amount of chemical waste, our lab would like
> to recycle the MeOH/HAc destain we use for Coomassie stained gels,
> by removing the stain. Has anyone figured out a convenient way of
> doing this? Is activated carbon the best thing to use, or will
> filtration through a thick stack of paper do?
> Any suggestions are welcome,
> Thanks,
> Marc Werten (m.w.t.werten at
> Dept. Microbial Conversions
> Agrotechnological Research Institute (ATO-DLO)
> Bornsesteeg 59
> 6708 PD Wageningen
> The Netherlands
> FAX: +31.317.475347
Wolfgang Schechinger         
University of Tuebingen
email: wgschech at

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