Effect of dry hopping on the oxidative stability of beer

被引：0

作者：

Hrabia, Olga ^{[1
]}

Ditrych, Maciej ^{[2
,3
]}

Ciosek, Aneta ^{[1
]}

Fulara, Katarzyna ^{[1
]}

Andersen, Mogens Larsen ^{[3
]}

Poreda, Aleksander ^{[1
]}

机构：

[1] Agr Univ Krakow, Fac Food Technol, Dept Fermentat Technol & Microbiol, Balicka 122, PL-30149 Krakow, Poland

[2] Katholieke Univ Leuven, Dept Microbial & Mol Syst M2S, Lab Enzyme Fermentat & Brewing Technol EFBT, Technol Campus Ghent,Gebroeders Smetstr 1, B-9000 Ghent, Belgium

[3] Univ Copenhagen, Dept Food Sci, Rolighedsvej 26, DK-1958 Frederiksberg, Denmark

来源：

FOOD CHEMISTRY | 2022年 / 394卷

关键词：

Oxidative stability; Beer; ESR spectroscopy; Dry-hopping; Metal ions;

D O I：

暂无

中图分类号：

O69 [应用化学];

学科分类号：

081704 ;

摘要：

Electron spin resonance (ESR) spectroscopy was used to determine the effect of dry hopping on the oxidative stability and antioxidative potential of beer. Commercial beer was dry-hopped at 5 degrees C and 20 degrees C with six hop varieties (Polish and American). The rate of radical formation and lag time were found to depend on the variety of hop used. An increase in the lag time and a decrease in the rate of radical formation occurred when dryhopping was performed at 20 degrees C for all hop varieties (at 5 degrees C in some varieties). The lag time had a strong correlation with the TPC (total polyphenols content) in beer. The rate of radical formation was correlated with the iron content of the beer. A decrease in iron concentration was observed after dry-hopping at 20 degrees C. Overall, the evaluation of free radical formation using ESR is useful for predicting oxidative changes in beer during storage.

引用

页数：8

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