R-205.22.131 [2018-05] Organic Acids in Wort

The wort analysis methods are written, for example, for wort that is produced using the Congress mash method. These methods may also be applied in the analysis of wort which has been produced using a different mash method, particularly the isothermal 65 °C method. However, the reference values listed in the analysis method for Congress wort are not transferable.

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Application/Purpose

This method describes how to determine the organic acids in wort and the Congress wort using a cation exchanger.

Scope of Application

Applicable for all (laboratory) worts

Principle

A cation exchanger based upon a sulfonated, crosslinked styrene/divinylbenzene copolymer is used to determine various organic acids in wort. Due to the high ligand density, the separation mechanism is based upon a combination of ion exclusion, ligand exclusion and steric exclusion; detection is performed using a UV detector.

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