FOAM - mashtemp

Frederick's Original Ale Makers

@FOAM_Members
* Monday night, February 6, Monthly FOAM meeting at the Flying Dog Brewery. Don't forget your FOAM membership card!- February 4th 2012, 18:42 (EST)
* Members only: FOAM Super Bowl party starting at 5:00pm on Feb 5th. Please bring a dish and some homebrew/craft beer; http://t.co/Jr1EVY6a- January 28th 2012, 09:26 (EST)
* BATTE OF THE BUBBLES 2 is coming... 7 styles are included this year. Read more about it at: http://t.co/YB9QuWUX- January 28th 2012, 09:20 (EST)
* Photos taken during the Jan. meeting http://t.co/bMWFI3jM- January 16th 2012, 20:16 (EST)
FOAM Cup Standings
1) Jim Sawitzke (6 pts)
2) Mike Ireland (4 pts)
4) Bob McNalty (2 pts)
November: Specialty Beer BJCP Category 23

Temperatures and Why

Temperature Activity Duration Effects
95'F/35'C Phytase (Acid Rest) up to 2 hrs. Lowers pH,
makes more acidic
122'F/50'C Proteolysis (Protein Rest) 15 min.- 1 hr. Proteins broken into amino acids
140'F/60'C Beta-amylase starch conversion into sugar. 20 min. - 1 1/2 hr. Produces a highly fermentable wort (thinner beer)
150'F/65'C Alpha & Beta-amylase equally active 20 min. - 1 1/4 hr. Produces wort with both fermentables and nonfermentables.
158'F/70'C Alpha-amylase starch conversion into dextrins (unfermentables) 20 min.- 1 hr. Produces a wort high in unfermentables (more body)
168'F/76'C Amylase activity stopped 5 - 15 min. Aids in liquefying wort for better run off.
170'F/77'C Sparge Water temperature 30 - 60 min. "Washes" sugar from grain bed, but too high temp could extract tannins

source: http://www.brewsupplies.com/mashing_temperatures.htm