Title: Determination of Isoxanthohumol, Xanthohumol, Alpha and Beta Bitter Acids, and trans and cis-iso-alpha acids by HPLC with UV and Electrochemical Detection: Application to Hop and Beer Analysis
Abstract:Hops are the female flower clusters of the hop species, Humulus lupulus. They are used as a flavoring and stability agent in beer, and are also used for various purposes in other beverages and as an h...Hops are the female flower clusters of the hop species, Humulus lupulus. They are used as a flavoring and stability agent in beer, and are also used for various purposes in other beverages and as an herbal medicine. Hops contain a number of important phytochemicals including: Xanthohumol (a prenylated chalconoid), and alpha- and beta- acids. As part of the beer brewing process hops or hop extracts are added during the boiling of the wort. The virtually insoluble alpha-acids (humulones) are isomerized into the more soluble iso-acids, the main bittering substances in beer. Beta acids (lupulones) do not isomerize and have a negligible effect on beer taste. Instead, they contribute to beer's bitter aroma but unfortunately may oxidize into compounds that can give beer off-flavors.Read More
Publication Year: 2012
Publication Date: 2012-03-07
Language: en
Type: article
Indexed In: ['crossref']
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Cited By Count: 1
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