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Non-alcoholic beer-A new industrial process

机译：无酒精啤酒-一种新的工业流程

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This paper studies a new industrial process for producing non-alcoholic beer with a corrected natural flavour profile. The aroma compounds are obtained by pervaporation of the original beer. The operating conditions of this unit, using polyoctylmethylsiloxane/polyetherimide (POMS/PEI) composite membranes, are investigated. High permeation temperature and low feed flowrate are the most effective for maximizing the permeation flux and the equilibrium of the flavour profile. The aroma depleted beer stream is then added to the feed stream of an industrial unit of spinning cone column distillation for deal-coholization. In this unit, the beverage contacts counter-currently with a water vapour stream that strips the ethanol and other volatile aroma compounds from beer. After dealcoholization, the beer is blended with the extracted aroma compounds and with a fraction of original beer to achieve a non-alcoholic beer (ethanol lower than 0.5 vol.%) with a good flavour profile. This new industrial process proved to originate a dealcoholized beer with a taste very close to the original one.
机译：本文研究了一种生产具有正确自然风味特征的无酒精啤酒的新工业工艺。香气化合物是通过原啤酒的全蒸发获得的。研究了使用聚辛基甲基硅氧烷/聚醚酰亚胺（POMS / PEI）复合膜的该装置的操作条件。高渗透温度和低进料流速对于最大化渗透通量和风味特征的平衡是最有效的。然后将耗尽香气的啤酒流添加到旋转锥塔蒸馏工业单元的进料流中以进行脱醇。在该单元中，饮料与水蒸气流逆流接触，水蒸气流从啤酒中汽提掉乙醇和其他挥发性香气化合物。脱醇后，将啤酒与提取的香气化合物和一部分原始啤酒混合，以获得具有良好风味特征的无酒精啤酒（乙醇含量低于0.5％（体积））。事实证明，这种新的工业生产工艺产生了一种脱醇啤酒，其味道与原始啤酒非常接近。

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