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Fouling During Wort Boiling�Effects on Wort Quality

MBAA TQ vol. 43, no. 3, 2006, pp. 207-210  |  VIEW ARTICLE

Dr. Jens Voigt (1) and Klaus Wasmuht (2). 1. Technical University of Munich at Weihenstephan, Weihenstephan, Germany. 2. Krones Steinecker GmbH, Freising, Germany.

Abstract
Wort heating and boiling is influenced by the degree of fouling, which leads to differences in the quality of the product in a series of batches. Trials in industrial plants were carried out to identify the impact of fouling in modern boiling systems. Wort quality changes were observed over a series of brews without intermediate cleaning. The thermal load on the wort increased because of the heating profile, which was adapted in order to compensate for decreasing the heat transfer rate caused by fouling. Different temperatures and heating regimes were applied. Wort color, aroma compounds, and nitrogen composition were analyzed. The ways to overcome the problem of changing wort quality differences are described.

Keywords: boiling, fouling, wort

 

S�ntesis
El calentamiento y hervor del mosto es influenciado por la cantidad de incrustaciones y suciedad en los elementos de calentamiento, lo que conduce a diferencias en la calidad del producto en una serie de lotes. Se realizaron pruebas a escala industrial para determinar el impacto de las incrustaciones en sistemas modernos de cocci�n. Se notaron cambios en la calidad del mosto a lo largo de una serie de cocimientos sin limpieza de los elementos. Aumento la carga t�rmica del mosto debido al perfil de calentamiento que tuvo que ser modificado para adaptarse al reducido transferencia de calor. Se utilizaron diferentes temperaturas y tasas de calentamiento en el estudio. Se analiz� el color de mosto, los compuestos arom�ticos y la distribuci�n de las prote�nas. Se mencionan diferentes maneras de compensar los problemas de diferencias en los mostos.

Palabras claves: hervor, incrustaciones, mosto

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