The principal raw materials of beer manufacture are water, hops, and malted cereal grains, principally barley.

用于啤酒生产的基本原料有水、酒花和发芽的谷物，主要是大麦。

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Germination results in activation of enzymes which convert starches in the malted barley and in other cereal grains into sugars, which can be easily fermented by yeast during the fermentation step.

但同时保持其完整的酶活力。发芽激发了能够将发芽的大麦和其它谷物中的淀粉转化为糖的酶的活力，在发酵阶段，糖类可以很容易地被酵母菌利用。

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