Factors influencing proteinase A activity during the production of unpasteurised beer

Wang Cheng; Tu Jingxia; Hao Jianqin; Liu Jing; Wang Deliang; Xiong Dan; Zhang Yanqing

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Factors influencing proteinase A activity during the production of unpasteurised beer

机译：影响蛋白酶在未经高温消毒啤酒生产过程中的因素

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Compared with pasteurised beer, a decline in foam retention during storage is an issue for unpasteurised beer. The major reason for this is that proteinase A is able to slowly breakdown foam promoting proteins in beer. Therefore, controlling the activity of proteinase A is key to solving this problem. In this study, foam quality in unpasteurised beer was studied systematically on a commercial scale considering factors including yeast activity, strain, generation number and storage time. Accordingly, yeast handling procedures to manage proteinase A activity were established: (1) yeast strain P with reduced proteinase A should be used in production; (2) storage time of recovered yeast should be no more than two days; (3) proteinase A activity in recycled yeast slurry should be less than 10x10(-5) U/mL and (4) the number of yeast generations should be less than three. With the application of these measures, proteinase A activity was significantly decreased, and the corresponding foam quality was improved. (c) 2020 The Institute of Brewing & Distilling

机译：与巴氏杀菌啤酒相比，储存期间泡沫保留的下降是未经高温消毒啤酒的问题。对此的主要原因是蛋白酶A能够在啤酒中慢慢分解促进蛋白质的泡沫。因此，控制蛋白酶A的活性是解决这个问题的关键。在这项研究中，在商业规模上系统地研究了未经高温消毒啤酒的泡沫质量，考虑因素，考虑因素，包括酵母活动，应变，发电号和储存时间。因此，制定蛋白酶蛋白酶的酵母处理程序是：（1）具有降低的蛋白酶A的酵母菌菌株应用于生产; （2）回收酵母的储存时间不应超过两天; （3）蛋白酶循环酵母浆料中的活性应小于10×10（-5）U / mL和（4）酵母产物的数量应小于三个。随着这些措施的应用，蛋白酶的活性显着降低，并且改善了相应的泡沫质量。（c）2020酿造和蒸馏研究所

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来源
《Journal of the Institute of Brewing》 |2021年第1期|41-48|共8页
作者
Wang Cheng; Tu Jingxia; Hao Jianqin; Liu Jing; Wang Deliang; Xiong Dan; Zhang Yanqing;
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作者单位

China Natl Res Inst Food & Fermentat Ind Bldg 6 Yard 24 Middle Jiuxianqiao Rd Beijing 100015 Peoples R China;

Guangzhou Nansha Zhujiang Brewery Co Ltd Guangzhou 511462 Peoples R China;

China Natl Res Inst Food & Fermentat Ind Bldg 6 Yard 24 Middle Jiuxianqiao Rd Beijing 100015 Peoples R China;

Guangzhou Nansha Zhujiang Brewery Co Ltd Guangzhou 511462 Peoples R China;

China Natl Res Inst Food & Fermentat Ind Bldg 6 Yard 24 Middle Jiuxianqiao Rd Beijing 100015 Peoples R China;

Guangzhou Nansha Zhujiang Brewery Co Ltd Guangzhou 511462 Peoples R China;

China Natl Res Inst Food & Fermentat Ind Bldg 6 Yard 24 Middle Jiuxianqiao Rd Beijing 100015 Peoples R China;

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收录信息美国《科学引文索引》(SCI);
原文格式 PDF
正文语种 eng
中图分类
关键词
proteinase A; unpasteurised beer; fermentation; yeast handling procedures; yeast viability;

机译：蛋白酶a;未经高温消毒的啤酒;发酵;酵母处理程序;酵母活力;

Factors influencing proteinase A activity during the production of unpasteurised beer

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