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Evaluation of emerging factors blocking filtration of high-adjunct-ratio wort.

Authors
  • Ma, Ting
  • Zhu, Linjiang
  • Zheng, Feiyun
  • Li, Yongxian
  • Li, Qi
Type
Published Article
Journal
Journal of Agricultural and Food Chemistry
Publisher
American Chemical Society
Publication Date
Aug 20, 2014
Volume
62
Issue
33
Pages
8486–8490
Identifiers
DOI: 10.1021/jf5023109
PMID: 25088033
Source
Medline
Keywords
License
Unknown

Abstract

Corn starch has become a common adjunct for beer brewing in Chinese breweries. However, with increasing ratio of corn starch, problems like poor wort filtration performance arise, which will decrease production capacity of breweries. To solve this problem, factors affecting wort filtration were evaluated, such as the size of corn starch particle, special yellow floats formed during liquefaction of corn starch, and residual substance after liquefaction. The effects of different enzyme preparations including β-amylase and β-glucanase on filtration rate were also evaluated. The results indicate that the emerging yellow floats do not severely block filtration, while the fine and uniform-shape corn starch particle and its incompletely hydrolyzed residue after liquefaction are responsible for filtration blocking. Application of β-amylase preparation increased the filtration rate of liquefied corn starch. This study is useful for our insight into the filtration blocking problem arising in the process of high-adjunct-ratio beer brewing and also provides a feasible solution using enzyme preparations.

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