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Original Articles

Beer Aftertaste Improved by Reducing Astringent Substances in the Barley Malt with Subcritical Water Treatment

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Pages 105-108 | Published online: 05 Feb 2018
 

Abstract

Astringent substances derived from acrospires of barley malt can be reduced by treatment with subcritical water. Crude hordatine β-d-glucopyranoside, identified as one of the astringent substances in barley malt, was shown to be reduced by about 80% under subcritical conditions. It was confirmed that the astringent substances in barley malt were reduced by the treatment of barley malt at various subcritical conditions. Beer was brewed using malt treated with subcritical water, and the astringency and the quantities of astringent substances were evaluated. The astringent components and the aftertaste in the beer were clearly reduced, and the reduction of astringent components in barley malt by treatment with subcritical water was shown to be a good way to control beer aftertaste.

RESUMEN

Sustancias astringentes derivados de las plúmulas de malta de cebada pueden reducirse mediante tratamiento con agua subcrítica. Crudo hordatine β-D-glucopiranósido, identificada como una de las sustancias astringentes de malta de cebada, se ha demostrado que reducir en un 80% en condiciones subcríticas. Se confirmó que las sustancias astringentes en malta de cebada fueron reducidas por el tratamiento de la malta de cebada en diversas condiciones subcríticas. La cerveza fue elaborada utilizando malta tratados con agua subcrítica, y se evaluó la astringencia y las cantidades de sustancias astringentes. Los componentes astringentes y el retrogusto de la cerveza se reducen claramente, y la reducción de los componentes astringentes en malta de cebada por tratamiento con agua subcrítica fue demostrado ser una buena manera de controlar retrogusto de la cerveza.

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