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The Impacts of a β-glucanase Step Pre-Cooking on Alcohol Yields during Irish Rye Whiskey Production
Journal of the American Society of Brewing Chemists ( IF 2 ) Pub Date : 2023-08-02 , DOI: 10.1080/03610470.2023.2229789
Sinéad Morris 1 , John Byrne 1 , Stephen Whelan 2 , John Carroll 2 , David Ryan 1
Affiliation  

Abstract

Recent industry roadmaps such as Crops 2030 and the Irish Whiskey Association’s Sustainability Roadmap 2022 emphasize the importance of increasing the use of Irish-grown grain in brewing and distilling. With the growth of the Irish distilling sector, there is a corresponding demand for raw materials and locally sourced grains. In Ireland, approximately 500 hectares of rye are harvested annually, with rye containing a similar range of starch as wheat. However, because rye contains more hemicelluloses and pentosans than other cereals, and because water-soluble pentosans tend to form viscous solutions in concentrated flour-water slurries, it is not widely utilised as a fermentation substrate. The purpose of this study is to examine pre-treatment with β-glucanase to enhance the alcohol output from rye flour. The research determined a baseline alcohol production of 187.1 LA/tonne dwb without the addition of β-glucanase. Using four predictor variables, response surface techniques were used to investigate the influence of β-glucanase on alcohol yield. A Box-Bekhan design was used to investigate time, temperature, calcium ions, and β-glucanase. When β-glucanase was administered at a dose rate of 3 U/g with the addition of 200 mg/L calcium ions and run at 50 °C for 30 min, the response surface approach yielded the highest alcohol output of 406 LA/tonne dwb. While, this yield is consistent with previous authors’ findings; it is lower than average yields for malted barley, wheat, and maize.



中文翻译:

爱尔兰黑麦威士忌生产过程中 β-葡聚糖酶预煮步骤对酒精产量的影响

摘要

最近的行业路线图,如“作物 2030”和爱尔兰威士忌协会的“2022 年可持续发展路线图”,强调了在酿造和蒸馏中增加使用爱尔兰种植的谷物的重要性。随着爱尔兰蒸馏业的发展,对原材料和当地采购的谷物产生了相应的需求。在爱尔兰,每年收获约 500 公顷黑麦,黑麦的淀粉含量与小麦相似。然而,由于黑麦比其他谷物含有更多的半纤维素和戊聚糖,并且由于水溶性戊聚糖在浓缩的面粉-水浆中容易形成粘稠溶液,因此它没有被广泛用作发酵底物。本研究的目的是检查用 β-葡聚糖酶进行预处理以提高黑麦粉的酒精产量。研究确定,在不添加 β-葡聚糖酶的情况下,基准酒精产量为 187.1 LA/吨 DWB。使用四个预测变量,使用响应面技术来研究 β-葡聚糖酶对酒精产量的影响。Box-Bekhan 设计用于研究时间、温度、钙离子和 β-葡聚糖酶。当 β-葡聚糖酶以 3 U/g 的剂量率施用并添加 200 mg/L 钙离子并在 50 °C 下运行 30 分钟时,响应面方法产生了最高的酒精产量 406 LA/吨 DWB 。同时,这个产量与之前作者的发现是一致的;它低于发芽大麦、小麦和玉米的平均产量。采用响应面技术研究β-葡聚糖酶对酒精产率的影响。Box-Bekhan 设计用于研究时间、温度、钙离子和 β-葡聚糖酶。当 β-葡聚糖酶以 3 U/g 的剂量率施用并添加 200 mg/L 钙离子并在 50 °C 下运行 30 分钟时,响应面方法产生了最高的酒精产量 406 LA/吨 DWB 。同时,这个产量与之前作者的发现是一致的;它低于发芽大麦、小麦和玉米的平均产量。采用响应面技术研究β-葡聚糖酶对酒精产率的影响。Box-Bekhan 设计用于研究时间、温度、钙离子和 β-葡聚糖酶。当 β-葡聚糖酶以 3 U/g 的剂量率施用并添加 200 mg/L 钙离子并在 50 °C 下运行 30 分钟时,响应面法产生了最高的酒精产量 406 LA/吨 DWB 。同时,这个产量与之前作者的发现是一致的;它低于发芽大麦、小麦和玉米的平均产量。响应面法得到的酒精产量最高为 406 LA/吨 DWB。同时,这个产量与之前作者的发现是一致的;它低于发芽大麦、小麦和玉米的平均产量。响应面法得到的酒精产量最高为 406 LA/吨 DWB。同时,这个产量与之前作者的发现是一致的;它低于发芽大麦、小麦和玉米的平均产量。

更新日期:2023-08-05
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