Abstract
Determination of malt color by the currently accepted method involves the execution of a Congress mash (Malt-4) with further preparation (Wort-9) before actual color measurement (Beer-10). However, Malt-4 requires elaborate equipment and procedures and is time consuming. The objective of this research was to develop a novel and quick method for measurement of malt color without Congress mashing, and was based on the simulation of mashing by microwave technology. We optimized several operational parameters and the best operational conditions were selected by comparing the results with ASBC color method, which shortens a malt color test to less than 30 min. To validate the method, we used the novel method to prepare worts from 70 malt samples with colors ranging from 1.50<°SRM (standard reference method)<3.70 as determined by the current ASBC method and found their colors to agree with the colors of Congress worts to within 0.18°SRM with a peak error of 0.29°SRM. The method promises substantial improvement in efficiencies of QA and QC programs in malting and brewing industry.
Published Version
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