2018年6月15日
The relationship between intracellular acidification and inactivation of Saccharomyces pastorianus by a two-stage system with pressurized carbon dioxide microbubbles
Biochemical Engineering Journal
- ,
- 巻
- 134
- 号
- 開始ページ
- 88
- 終了ページ
- 93
- 記述言語
- 英語
- 掲載種別
- 研究論文(学術雑誌)
- DOI
- 10.1016/j.bej.2018.03.011
© 2018 Elsevier B.V. To investigate the relationship between intracellular acidification and inactivation of Saccharomyces pastorianus by a two-stage system with pressurized carbon dioxide microbubbles (two-stage MBCO2), the survivors and intracellular pH (pHin) of S. pastorianus suspended in buffers at various pHs after the two-stage MBCO2 treatment were measured. The inactivation efficiency of two-stage MBCO2 on S. pastorianus increased with lowering the initial buffer pH, although the pHin of S. pastorianus in pH 3 buffer was decreased by heating to 45 °C, regardless of the use of MBCO2. Conversely, the number of surviving S. pastorianus cells in pH 4 and 5 buffers was decreased by the two-stage MBCO2 without the pHin-lowering. Furthermore, the inactivation efficiency of two-stage MBCO2 on S. pastorianus increased with increasing pressure in the mixing vessel, although the pHin-lowering was caused by heating to 45 °C for all of the pressures tested, regardless of the use of MBCO2. Therefore, intracellular acidification of S. pastorianus by two-stage MBCO2 was due to the cell penetration of extracellular H+ associated with the temperature increase, and the inactivation was suggested to be induced by the combined factors of increasing temperature, pHin- and pHex-lowering and high dissolved CO2 concentration.
- リンク情報
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- DOI
- https://doi.org/10.1016/j.bej.2018.03.011
- Web of Science
- https://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=JSTA_CEL&SrcApp=J_Gate_JST&DestLinkType=FullRecord&KeyUT=WOS:000431936900010&DestApp=WOS_CPL
- Scopus
- https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=85044149865&origin=inward
- Scopus Citedby
- https://www.scopus.com/inward/citedby.uri?partnerID=HzOxMe3b&scp=85044149865&origin=inward
- ID情報
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- DOI : 10.1016/j.bej.2018.03.011
- ISSN : 1369-703X
- eISSN : 1873-295X
- SCOPUS ID : 85044149865
- Web of Science ID : WOS:000431936900010