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Total hordatine content in different types of beers

机译:不同类型啤酒中的总霍尔达汀含量

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Hordatines are phenolic secondary metabolites typical of barley. Hordatines withstand at least moderate processing, and thus they are also found in barley malts and beer. So far, no published data on the hordatine content has been available in beers or different styles of beer. The aim of this study was to produce information on the total hordatine content in beers and statistically compare the hordatine content of different beer types. In the current study, hordatines were analysed in 208 beers by high-performance liquid chromatography equipped with a diode array detector (HPLC-DAD). The average total hordatine content of all beer samples was 5.6 +/- 3.1 mg L-1 as p-coumaric acid equivalents (PCAE), with a minimum values 0 to a maximum value 18.7 mg L-1 PCAE. The total hordatine content correlated positively to the alcohol content in lagers, ales, stouts and porters, but not in wheat beers. There was no statistically significant difference in hordatine content in different types of beer, excluding the non-alcoholic group of beers. It is noteworthy that non-alcoholic beers also contained hordatines. More research would be needed to understand how parameters, such as mashing, should be chosen in order to achieve maximum recovery of hordatines in wort and beer.
机译:霍达汀是大麦的典型酚类次级代谢产物。大头菜至少能承受中等程度的加工,因此在大麦麦芽和啤酒中也能找到它们。到目前为止,还没有关于啤酒或不同风格啤酒的大麦碱含量的公开数据。这项研究的目的是提供有关啤酒中总霍尔达汀含量的信息,并统计比较不同类型啤酒中的霍尔达汀含量。在当前的研究中,通过配备二极管阵列检测器(HPLC-DAD)的高效液相色谱法分析了208杯啤酒中的大麦碱。所有啤酒样品中的平均总霍尔达汀含量为5.6 +/- 3.1 mg L-1,为对香豆酸当量(PCAE),最小值为0至最大值为18.7 mg L-1 PCAE。大麦碱总含量与贮藏啤酒,淡啤酒,烈性黑啤酒和搬运工中的酒精含量呈正相关,但与小麦啤酒中的酒精含量无正相关。除非酒精类啤酒外,不同类型啤酒中的霍尔定含量没有统计学上的显着差异。值得注意的是,非酒精啤酒也含有大麦碱。需要进行更多的研究来了解如何选择诸如糖化这样的参数,以实现麦芽汁和啤酒中大麦碱的最大回收率。

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