Hexadecylrimethylammonium bromide substitute??

[keith haddad]

Hexadecylrimethylammonium bromide substitute??

I am using 1% Hexadecylrimethylammonium bromide  as precipitant to
detect microbes producing pectinase.  

Is there any substitute reagents??  
Is it the bromide that reacts with the pectinase??
So can I use other bromide compounds??


Thanx 
khaddad at io.org
http://www.io.org/~khaddad/