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European Food Research and Technology

, Volume 245, Issue 3, pp 521–533 | Cite as

Inhomogeneity in the lauter tun: a chromatographic view

  • Martin Hennemann
  • Martina GastlEmail author
  • Thomas Becker
Review article
  • 35 Downloads

Abstract

The purpose of lautering in beer brewing is to separate the wort, which contains soluble malt components from the solids, the brewer’s spent grains. Lautering is a critical point in wort production and its primary objective is the efficient recovery of extract. Lautering is a special type of cake filtration; the particle sedimentation behavior of the mash results in an inhomogeneous filter cake whose structure has an impact on its chemical composition. Components of interest within the filter cake are polysaccharides, such as starch byproducts, β-glucan, and arabinoxylan, as well as proteins, lipids, polyphenols, and metal ions. The distribution of these components within the inhomogeneous filter cake is presented in this review. Lautering is a combination of separation and extraction. During extraction, the solubility of each filter cake component is different. Therefore, in this paper, lautering is considered from a new angle—a chromatographic viewpoint. The initial concentration of the components in malt is compared to their degree of retention in the filter cake and extraction into the wort. Differences in the analyses of brewer’s spent grains due to different sampling points within the filter cake are addressed in this review. This new information is important for the use of spent grains in biotechnological processes and enables a more accurate comparison of components from different brewer’s spent grain analyses.

Keywords

Brewer’s spent grains Cake filtration Chromatography Extraction Inhomogeneity Lautering 

Notes

Acknowledgements

This IGF Project of the FEI was supported via AiF (19359N) within the programme for promoting the Industrial Collective Research (IGF) of the German Ministry of Economic Affairs and Energy (BMWi), based on a resolution of the German Parliament.

Compliance with ethical standards

Conflict of interest

The authors declare that they have no conflict of interest.

Compliance with ethics requirements

This article does not contain any studies with human or animal subjects.

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Copyright information

© Springer-Verlag GmbH Germany, part of Springer Nature 2019

Authors and Affiliations

  • Martin Hennemann
    • 1
  • Martina Gastl
    • 1
    Email author
  • Thomas Becker
    • 1
  1. 1.Technische Universität München, Chair of Brewing and Beverage TechnologyFreisingGermany

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