Evaluation of alfa-amylase activity in malt made from selected barley varieties intended for beer production

Kód výsledku v IS VaVaI

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Výsledek na webu

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DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

Evaluation of alfa-amylase activity in malt made from selected barley varieties intended for beer production

Popis výsledku v původním jazyce

Activity of alpha-amylase enzyme (EC 3.2.1.1) is considered to be primarily essential for barley?s (Hordeum vulgare L.) seed germination and crucial for malting and beer processing. The aim of this study was to evaluate: (i) the activity of alpha-amylaseenzyme in spring barley varieties recommended for Czech Beer production (Bojos, Malz and Tolar) compared with varieties intended for malt export (Kompakt, Jersey and Sebastian) harvested in 2007-2008; (ii) the effect of zinc foliar application (dose of0.5 kg/ha Zn) during pre-harvest period on the activity of this enzyme; (iii) relations between alpha-amylase activity and selected qualitative parameters (TGW, extract, friability etc.). The enzyme activity was assessed by the colorimetric method (EBC 4.13). The least activity of alpha-amylase enzyme (expressed by dextrinizing units ? DU/g) was established in Tolar variety, the export varieties Kompakt and Jersey belonged to the group with high enzyme activity.

Název v anglickém jazyce

Evaluation of alfa-amylase activity in malt made from selected barley varieties intended for beer production

Popis výsledku anglicky

Activity of alpha-amylase enzyme (EC 3.2.1.1) is considered to be primarily essential for barley?s (Hordeum vulgare L.) seed germination and crucial for malting and beer processing. The aim of this study was to evaluate: (i) the activity of alpha-amylaseenzyme in spring barley varieties recommended for Czech Beer production (Bojos, Malz and Tolar) compared with varieties intended for malt export (Kompakt, Jersey and Sebastian) harvested in 2007-2008; (ii) the effect of zinc foliar application (dose of0.5 kg/ha Zn) during pre-harvest period on the activity of this enzyme; (iii) relations between alpha-amylase activity and selected qualitative parameters (TGW, extract, friability etc.). The enzyme activity was assessed by the colorimetric method (EBC 4.13). The least activity of alpha-amylase enzyme (expressed by dextrinizing units ? DU/g) was established in Tolar variety, the export varieties Kompakt and Jersey belonged to the group with high enzyme activity.

Druh

D - Stať ve sborníku

CEP obor

GE - Šlechtění rostlin

OECD FORD obor

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Projekt

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Návaznosti

Z - Vyzkumny zamer (s odkazem do CEZ)

Rok uplatnění

2009

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název statě ve sborníku

7th Croatian Congress of Cereal Technologists

ISBN

9789537005191

ISSN

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e-ISSN

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Počet stran výsledku

1

Strana od-do

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Název nakladatele

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Místo vydání

Osijek, Croatia

Místo konání akce

Osijek, Croatia

Datum konání akce

1. 1. 2009

Typ akce podle státní příslušnosti

WRD - Celosvětová akce

Kód UT WoS článku

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