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http://dx.doi.org/10.9721/KJFST.2017.49.2.132

Production and properties of ale beer with Nuruk, a Korean fermentation starter  

Jung, Suji (Department of Culinary Science and Food Service Management, Sejong University)
Chung, Chang-Ho (Department of Culinary Science and Food Service Management, Sejong University)
Publication Information
Korean Journal of Food Science and Technology / v.49, no.2, 2017 , pp. 132-140 More about this Journal
Abstract
Nuruk, a traditional Korean alcoholic beverage starter, was evaluated as an additional saccharifying agent comprising up to 1.5% (w/w) of malt weight in ale-type beer processing. Sample characteristics were monitored during fermentation, ripening, and storage. Beer containing nuruk showed higher numbers of total viable bacteria and yeast cell counts. Additionally, ethanol (6.19-6.35%), color (Standard Reference Method), foam stability ($228.49-368.24{Sigma}$), saccharogenic power (307-417), and reducing sugar (3.83-5.25%) increased as the amount of nuruk was increased, while viscosity (3.13-2.07 cP) and bitterness unit (19.68-13.13) were lower than in samples without nuruk. Overall acceptance and aftertaste of the beer were significantly higher in a preference test. These results demonstrate that nuruk can be used to produce a new type of ale.
Keywords
Beer; Nuruk; fermentation; saccharification; ale;
Citations & Related Records
Times Cited By KSCI : 4  (Citation Analysis)
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