Enzyme availability in Australia - Will these alpha amylase products work for GF?

[goatusmaximus]

Hi all,

I'm an experienced AG brewer making the eye opening transition to AG Gluten Free mashing.

I have sourced myself some malted millet and rice malts - but finding the recommended enzymes seems to be a bit tricky here in Australia. Below are the two enzymes I have been able to find locally. Any comments on if they will work or my suggested method would be super helpful:

Still Spirits Alpha Amylase - This seems to be meant for distilling - denatures at 85C (185F) so I guess I would mash in up near boiling to gelatinise, then drop the mash temp to recommended enzyme mash temp (70C/158F) and add the enzyme. Instructions based on destilling say to leave it there overnight, but i assume that's because they want maximum conversion - should a 90min mash here give me a "regular beer" type conversion do you think? Are all alpha amylase enzymes the same?

White Labs Optimash (Spec Sheet)- Another alpha amylase product which seems to be actually aimed at beer brewing - but by its description I get the feeling it is more just to assist in a standard mash with adjuncts rather than breaking down the entire mash like will be required if i kill off the natural enzymes by doing the super high temp mash in as above. Would this mean it would be less powerful etc?

Any thoughts?
Cheers

 

[xflibble]

The first should work, based on my limited experience. Ask The Gluten Free Brewer on Facebook for a definitive answer.