How to remove biotin from proteins?

[Salom=?iso-8859-1?Q?=E9 Kantengwa]

Hello,

Does somebody know a method to remove biotin from proteins on a 
nitrocellulose membrane? My biotinylated proteins were 
immunoprecipitated by antibodies of interest and biotin-streptavidin 
complexes were revealed by ECL reagents. Now I would like to reuse  
the membrane for Western Blot analysis with another antibody. Since I 
have to detect the antigen by ECL, I need to remove biotin groups to 
avoid interferences. Thank you for your help.

Salomé