Determination of the Lethal Injury on the Inactivation of Saccharomyces pastorianus Cells by Low-pressure Carbon Dioxide Microbubbles

Determination of the Lethal Injury on the Inactivation of Saccharomyces pastorianus Cells by Low-pressure Carbon Dioxide Microbubbles
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低压二氧化碳微泡对巴斯德酵母细胞灭活致死损伤的测定

DOI:
10.1007/s00284-022-02817-5
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发表时间:
2022
影响因子:
2.6
通讯作者:
Odake Sachiko
Odake Sachiko
中科院分区:
生物学4区
文献类型:
--
作者:
Kobayashi Fumiyuki;Odake Sachiko

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研究了低压二氧化碳微泡(CO2 MB)处理对酵母细胞的致死性损伤、存活细胞数、核酸和蛋白质渗漏、细胞膜荧光偏振、碱性磷酸酶(AP)活性、细胞内pH(pHin)、线粒体膜电位(MMP)、细胞表面疏水性(CSH)和氧化应激等的影响。测定了CO_2 MB处理的pastorianus在不同温度下的生长情况。幸存者的数量。pastorianus细胞在40、45和50 ℃下经CO_2 MB处理后下降到检测限以下,在35 ℃下诱导2-log下降。帖前在40 ℃以上用CO_2MB处理的pastorianus细胞,FP增加,核酸和蛋白质渗漏。在35 ℃下用CO_2MB处理的巴斯德酵母细胞中AP也被激活,但在40 ℃以上则失活。此外,S.在35 ℃以上CO_2MB处理引起的酵母菌病。CO_2 MB处理也增加了毕赤酵母细胞的氧化应激,但在35 ℃以上的温度下,氧化应激降低。我们的研究结果使我们推断CO_2MB处理对巴斯德酵母细胞的损伤类型不同于处理温度所引起的损伤类型,致死性损伤是酶失活。
To clarify the lethal injury related to the inactivation ofSaccharomyces pastorianuscells by low-pressure carbon dioxide microbubble (CO2MB) treatment, surviving number, leakage of nucleic acids and proteins, fluorescence polarisation (FP) of the cell membrane, activity of alkaline phosphatase (AP), intracellular pH (pHin), mitochondrial membrane potential (MMP), cell surface hydrophobicity (CSH) and oxidative stress ofS. pastorianustreated with CO2MB at various temperatures were measured. The number of survivingS. pastorianuscells decreased below the detection limit after CO2MB treatment at temperatures of 40, 45 and 50 ℃, inducing a 2-log reduction at 35 ℃. TheS. pastorianuscells treated with CO2MB at temperatures above 40 ℃ showed an increase in FP and leakage of nucleic acids and proteins. The AP inS. pastorianuscells treated with CO2MB at a temperature of 35 ℃ was also activated but inactivated at temperatures above 40 ℃. Furthermore, the decrease in pHinand MMP and the increase in CSH ofS. pastorianuswere caused by CO2MB treatment at temperatures above 35 ℃. Oxidative stress inS. pastorianuscells was also increased by CO2MB treatment without warming but decreased at temperatures above 35 ℃. Our results lead us to infer that the type of cell injury inS. pastorianusinduced by CO2MB treatment differed from that caused by the treatment temperature and that the lethal injury was enzyme inactivation.
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发表时间: 2018
影响因子: 3.9
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