| 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 |