Mashing parameters for greater attenuation

Homebrew Talk - Beer, Wine, Mead, & Cider Brewing Discussion Forum

Help Support Homebrew Talk - Beer, Wine, Mead, & Cider Brewing Discussion Forum:

This site may earn a commission from merchant affiliate links, including eBay, Amazon, and others.

dudybrew

Well-Known Member
Joined
Jun 26, 2012
Messages
51
Reaction score
6
Location
Londrina
Is it right to assume that mashing at 50C(122F) for a 10min protein rest, then raising up to 67C(~153F) for about 40min for a beta/alpha, the pouring some cold water enough to bring it down to 62C(144F - closer beta ideal temp) to have the betas work further on the converted dextrins will give us a more fermentable wort then direct 67C(~153) and mash out?
That ignoring water ph, and without the addition of more grains or enzimes.

Or even doing a 65C(149F) then a 72C(~162), then adding cold water to bring it down to 62C(144F).

Just wondering.

Cheers...
 
Is it right to assume that mashing at 50C(122F) for a 10min protein rest, then raising up to 67C(~153F) for about 40min for a beta/alpha, the pouring some cold water enough to bring it down to 62C(144F - closer beta ideal temp) to have the betas work further on the converted dextrins will give us a more fermentable wort then direct 67C(~153) and mash out?
That ignoring water ph, and without the addition of more grains or enzimes.

Or even doing a 65C(149F) then a 72C(~162), then adding cold water to bring it down to 62C(144F).

Just wondering.

Cheers...

By the time you did the alpha temp rests, you will have denatured the enzymes you need for the lower temp beta rest, so it won't work.
 
Start at a lower temperature, say 149, hold it there for an hour. Then raise to 153 for 5 minutes and lower to 145 for an hour, then back up to 153 for 5 minutes and repeat.
Have fun.

OR - just use an extra pound of grain and mash at one temperature.

By the way - denatured enzymes can sometimes recover
 
It depends what layer of structure the enzymes have lost. Enzymes tend to be proteins which have four layers of structure, if you just heat them enough to lose the top layer structure then it's possible for that structure to re-assemble on cooling.

If on the other hand you boil the hell out of them, three or four of those layers get destroyed and there's no way in hell they'll re-assemble.
 
It depends what layer of structure the enzymes have lost. Enzymes tend to be proteins which have four layers of structure, if you just heat them enough to lose the top layer structure then it's possible for that structure to re-assemble on cooling.

If on the other hand you boil the hell out of them, three or four of those layers get destroyed and there's no way in hell they'll re-assemble.

Thanks
 
Back
Top