啤酒酿造过程中影响乙醛变化因素的研究

有针对性地提出了酿造过程中影响乙醛形成的生理内因和环境外因 ,并从主要的几个方面进行了研究。结果表明 ,酿造过程染菌、麦汁充氧控制不合理、二次发酵酒添加是造成成品啤酒中乙醛含量偏高的主要环境外因。在实际生产中 ,应加强CIP清洗 ,特别是种酵母罐的清洗及无菌空气过滤的控制工作 ,并合理控制麦汁的溶解氧含量 ,尽可能减少二次发酵酒的添加。

Study on Effect of Practical Factors in Brewing Process on the Content of Acetaldehyde in Beer

In this article, the effect of physiological and environmental factors on the content of acetaldehyde were specially put forward and then studied from several important aspects. It has been shown that contamination in brewing, aeration of wort and addition of second products are more important environmental factors which can result in the higher content of acetaldehyde in beer. It should pay more attention to controlling cleaning in place and air sterilization, optimizing aeration of worts and decreasing addition of second products possibly.