期刊名称：Advance Journal of Food Science and Technology
印刷版ISSN：2042-4868
电子版ISSN：2042-4876
出版年度：2013
卷号：5
期号：6
页码：671-677
DOI：10.19026/ajfst.5.3147
出版社：MAXWELL Science Publication
摘要：The study consists in the production of a traditional beer from maize in the Congo. The traditional method of brewing corn malt has three main stages: malting corn, brewing corn malt and fermentation. During the brewing corn malt, endogenous amylase activity is destroyed during the stiffening of the starch to about 80°C. A pre-cooking of the mash is necessitated to promote amylolyse at 50°C with an exogenous enzyme. The use of a preparation of α-amylase can liquefy the mash and produce a sweet wort (average density = 12.5° Balling) rich in dextrin corresponding to an apparent extract of 4° Balling in beer. The rising profile of the pH of the corn malt mash, from mashing to extract the wort does not affect the pH of the beer produced. This beer, slightly alcoholic (3.6% ethanol), is characterized by a nomal acid pH (pH = 4.15 on average) and a brown color (25 EBC units). Its slight bitterness (21 EBU) and the fine aroma of a beer closer barley produced industrially in the Congo.
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