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Enhancing DPCD in Liquid Products by Mechanical Inactivation Effects: Assessment of Feasibility
Chemie Ingenieur Technik ( IF 1.5 ) Pub Date : 2020-06-17 , DOI: 10.1002/cite.202000011 Ratka Hoferick 1 , Frank Gockel 2 , Mareike Müller 1 , Holger Schönherr 1 , Stéphan Barbe 3
Chemie Ingenieur Technik ( IF 1.5 ) Pub Date : 2020-06-17 , DOI: 10.1002/cite.202000011 Ratka Hoferick 1 , Frank Gockel 2 , Mareike Müller 1 , Holger Schönherr 1 , Stéphan Barbe 3
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The enhancement of standard dense phase carbon dioxide (DPCD) pasteurization by additional mechanical effects was assessed in this work. These effects were induced during pasteurization by the sudden depressurization in a narrow minitube. The high flow velocities, moderate pressures (40–80 bar) and low temperatures (25–45 °C) lead to intense degasification and shear stress. The inactivation of the test microorganism Escherichia coli DH5α (E. coli DH5α) was determined before and after depressurization in the minitube, representing entirely chemical DPCD via dissolved CO2 and total inactivation comprising the effects of dissolved CO2 and mechanical effects, respectively. Compared to conventional DPCD pasteurization, which is mostly attributed to chemical effects, the additional mechanical effects increased the inactivation efficiency considerably.
中文翻译：
通过机械失活作用增强液体产品中的DPCD：可行性评估
在这项工作中评估了通过附加的机械效应来增强标准致密相二氧化碳（DPCD）巴氏灭菌的效果。这些作用是在巴氏杀菌过程中由狭窄的微型管中的突然减压引起的。高流速，中等压力（40–80 bar）和低温（25–45°C）导致强烈的脱气和剪切应力。测试微生物的失活的大肠杆菌DH5α（大肠杆菌DH5α）中的溶液之前，并在减压Minitube公司之后确定，通过溶解的CO表示完全化学DPCD 2和包含溶解的影响CO总灭活2和机械效应。与主要归因于化学作用的常规DPCD巴氏灭菌法相比，附加的机械作用大大提高了灭活效率。
更新日期：2020-06-17
中文翻译：
通过机械失活作用增强液体产品中的DPCD：可行性评估
在这项工作中评估了通过附加的机械效应来增强标准致密相二氧化碳（DPCD）巴氏灭菌的效果。这些作用是在巴氏杀菌过程中由狭窄的微型管中的突然减压引起的。高流速，中等压力（40–80 bar）和低温（25–45°C）导致强烈的脱气和剪切应力。测试微生物的失活的大肠杆菌DH5α（大肠杆菌DH5α）中的溶液之前，并在减压Minitube公司之后确定，通过溶解的CO表示完全化学DPCD 2和包含溶解的影响CO总灭活2和机械效应。与主要归因于化学作用的常规DPCD巴氏灭菌法相比，附加的机械作用大大提高了灭活效率。
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