What is isomerization of hops?
Isomerised Hop Pellets provide a more efficient provision of bitterness by replacement of hops, pellets or extract in the kettle. Isomerised Hop Pellets are produced by warming Stabilised Pellets at approximately 50 °C for one to two weeks.
What is isomerization in brewing?
Isomerization is the result of the effect of heat on the alpha acids. The process is both time and temperature dependent. The longer the alpha acids are exposed to the rolling wort boil, the more alpha acids are converted into iso-alpha acids and the more bitterness is created in the wort and beer.
What is hop Cohumulone?
Cohumulone is one of five alpha acid analogs in hop resin, the others being adhumulone, humulone, prehumulone, and posthumulone. These analogs differ only slightly from each other in their molecular structures, and together they serve as precursors to iso-alpha acids, the predominant contributors of bitterness in beer.
What is the alpha acid in hops?
Highest Alpha Acid (AA%) Hops. Alpha acids (α acids) are chemical compounds of the Humulus lupulus (or hop) plant. These acids are found in the resin glands of the flowers of the hop plant and are the source of hop bitterness. Alpha acids mostly contribute this bitterness when they are isomerized in boiling wort.
What is the difference between Humulone Cohumulone and Adhumulone?
Cohumulone and humulone levels vary between roughly 20% and 50% of total alpha acids, depending on variety, whereas adhumulone levels tend to be fairly constant across varieties, at about 10% to 15% of alpha acids. Pre- and posthumulone, on the other hand, play only minor roles.
What is a Citra hop?
Flavor & Aroma Profile Citra is a dual-purpose hop that can be used in all hop additions throughout the brewing process. The Citra hop is a high alpha acid hop with a strong, yet smooth floral and citrus aroma and flavor.