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首页> 外文期刊>Acta Horticulturae >Concentration of 4-mercapto-4-methylpentan-2-one and 3-mercaptohexan-1-ol in hop cultivars and their behavior in brewing processes.
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Concentration of 4-mercapto-4-methylpentan-2-one and 3-mercaptohexan-1-ol in hop cultivars and their behavior in brewing processes.

机译：啤酒花品种中4-巯基-4-甲基戊-2-酮和3-巯基己-1-醇的浓度及其在酿造过程中的行为。

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摘要

Hop-derived thiols are believed to contribute to beer hop aroma. Here, we examined this contribution, and detected extremely strong fruity, muscat-like aromas in beers hopped with some American cultivars. The main contributor to the fruity aroma was identified as 4-mercapto-4-methylpentan-2-one (4MMP). In hop pellets, 4MMP concentrations were affected by the cultivar and copper ion content. The 4MMP content was highest in 'Simcoe' cultivars followed by 'Summit', 'Apollo', 'Topaz', 'Cascade' pellets. 4MMP content also differed between crop years. 4MMP was detected only in American, Australian and New Zealand cultivars, but not European ones, which are treated with Bordeaux mixture and therefore have a high content of copper ions. The field trial to spray Bordeaux mixture was conducted in the hop field of USA. The results indicated that the accumulation of the copper ion in the soil in the past years affect the higher content of copper ion in the hop cones. In the brewing process, 4MMP was found to rapidly decrease during boiling, while 3-mercaptohexan-1-ol (3MH) increased. During fermentation, both 4MMP and 3MH content increased, and 3-mercaptohexyl acetate (3MHA) was newly formed from 3MH.
机译：啤酒花衍生的硫醇被认为有助于啤酒花香气。在这里，我们检查了这种作用，并在一些美国品种的啤酒中发现了强烈的果味，麝香状的香气。确定了水果香气的主要贡献者是4-巯基-4-甲基戊烷-2-一（4MMP）。在啤酒花颗粒中，4MMP浓度受品种和铜离子含量的影响。 4MMP含量在“ Simcoe”品种中最高，其次是“ Summit”，“ Apollo”，“ Topaz”，“ Cascade”粒料。作物年份之间的4MMP含量也有所不同。仅在美国，澳大利亚和新西兰品种中检测到4MMP，而在欧洲品种中未检测到4MMP，这些品种使用波尔多混合物处理，因此铜离子含量很高。在美国啤酒花田中进行了喷洒波尔多混合物的田间试验。结果表明，近年来土壤中铜离子的积累影响啤酒花球果中较高的铜离子含量。在酿造过程中，发现4MMP在煮沸过程中迅速减少，而3-巯基己-1-醇（3MH）增加。在发酵过程中，4MMP和3MH含量均增加，并且从3MH中新形成了乙酸3-巯基己酯（3MHA）。

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