马铃薯用作啤酒新辅料的发酵特性研究

研究了以马铃薯为辅料的麦汁中酵母的发酵特性,以及所得啤酒的品质,探索将马铃薯用作啤酒新辅料的可行性。结果表明,与大米为辅料的麦汁发酵特性相比,以马铃薯为辅料的完成主发酵的所需时间、在主发酵阶段可发酵浸出物含量的变化、酵母利用还原糖和α-氨基氮的情况,以及酒精生成量的变化等方面均无明显区别;双乙酰的生成情况略有不同,所得啤酒的各项理化指标均符合国家标准GB4927—2001,但氨基酸总量和必需氨基酸所占的比例,都远高于添加大米辅料酿制的啤酒。

Study on Ferment Characteristics of Potato Used as Auxiliary Material for Beer

Brewing performance of yeast in the wort with potato as auxiliary material for beer were studied. Compared to that in the wort with rice as auxiliary material,the necessary time for fermentation and changes of fermentable extract,reductive sugar,a-amino nitrogen and alcohol during fermentation were similar. A little difference was found in diacety synthesis. The resulted beer was confirmed qualified to the country standard of GB4927-2001.