Suntory Global Innovation Center Ltd., Research Institute, 8-1-1 Seikadai, Seika-cho, Soraku-gun, Kyoto 619-0284, Japan.
Suntory Beer Ltd., Beer Development Department, 5-2-5 Yamazaki, Shimamoto-cho, Mishima-gun, Osaka 618-0001, Japan.
Food Chem. 2016 Jul 1;202:15-22. doi: 10.1016/j.foodchem.2016.01.058. Epub 2016 Jan 19.
Humulus lupulus (hop) cone is a key ingredient of beer, which determines its taste and aroma. Thus, it is necessary to control its cultivation conditions to acquire suitable quality. Here, cultivation conditions, such as pruning, blooming, and harvest timings, were modified for the Saaz hop variety in the Saaz region of Czech Republic. We investigated the correlation between the abovementioned cultivation factors and hop aroma characteristics, chemical components, appearance, yield, and beer quality in four locations and in three years. Harvest timing had a significant impact on the amount of essential oils, especially monoterpenes. Among them, linalool, geraniol and myrcene, which contribute beer hoppy aroma, increased with delay in harvest timing. These impacts caused by harvest timing were confirmed in all 4 locations and in all 3years. Our findings suggest that harvest timing influences the intensity and quality of beer hoppy aroma.
啤酒花（蛇麻草）是啤酒的关键成分，决定了啤酒的味道和香气。因此，有必要控制其种植条件，以获得合适的质量。在这里，对捷克萨兹地区的萨兹啤酒花品种进行了修剪、开花和收获时机等种植条件的修改。我们在四个地点和三个年份调查了上述种植因素与啤酒花香气特征、化学成分、外观、产量和啤酒质量之间的相关性。收获时机对精油含量有显著影响，特别是单萜烯。其中，对啤酒具有草香的芳樟醇、香叶醇和月桂烯随着收获时机的延迟而增加。在所有 4 个地点和 3 年内都证实了收获时机造成的这些影响。我们的研究结果表明，收获时机影响啤酒草香的强度和质量。
