The Heat Resistance of Microbial Cells Represented by D Values Can be Estimated by the Transition Temperature and the Coefficient of Linear Expansion

KOICHI NAKANISHI; AKINORI KOGURE; KEIJI DEUCHI; RITSUKO KUWANA; HIROMU TAKAMATSU; KIYOSHI ITO

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The Heat Resistance of Microbial Cells Represented by D Values Can be Estimated by the Transition Temperature and the Coefficient of Linear Expansion

机译：D值代表的微生物细胞的耐热性可以通过转变温度和线性膨胀系数来估算

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We previously developed a method for evaluating the heat resistance of microorganisms by measuring the transition temperature at which the coefficient of linear expansion of a cell changes. Here, we performed heat resistance measurements using a scanning probe microscope with a nano thermal analysis system. The microorganisms studied included six strains of the genus Bacillus or related genera, one strain each of the thermophilic obligate anaerobic bacterial genera Thermoanaerobacter and Moorella , two strains of heat-resistant mold, two strains of non-sporulating bacteria, and one strain of yeast. Both vegetative cells and spores were evaluated. The transition temperature at which the coefficient of linear expansion due to heating changed from a positive value to a negative value correlated strongly with the heat resistance of the microorganism as estimated from the D value. The microorganisms with greater heat resistance exhibited higher transition temperatures. There was also a strong negative correlation between the coefficient of linear expansion and heat resistance in bacteria and yeast, such that microorganisms with greater heat resistance showed lower coefficients of linear expansion. These findings suggest that our method could be useful for evaluating the heat resistance of microorganisms.

机译：我们先前开发了一种通过测量细胞线性膨胀系数变化的转变温度来评估微生物的耐热性的方法。在这里，我们使用带有纳米热分析系统的扫描探针显微镜进行了耐热性测量。研究的微生物包括6株芽孢杆菌属（Bacillus）或相关属，一种嗜热专性厌氧细菌属（i.Thermoanaerobacter和 Moorella），两株耐热霉菌，两株非霉菌。孢子形成细菌和一株酵母。营养细胞和孢子均被评估。由D值推定的加热引起的线性膨胀系数从正值变为负值的转变温度与微生物的耐热性强烈相关。具有较高耐热性的微生物表现出较高的转变温度。细菌和酵母中的线性膨胀系数与耐热性之间也存在很强的负相关性，因此具有较高耐热性的微生物的线性膨胀系数较低。这些发现表明我们的方法可用于评估微生物的耐热性。

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《Biocontrol Science》 |2015年第4期|共5页
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KOICHI NAKANISHI; AKINORI KOGURE; KEIJI DEUCHI; RITSUKO KUWANA; HIROMU TAKAMATSU; KIYOSHI ITO;
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1. The Heat Resistance of Microbial Cells Represented by D Values Can be Estimated by the Transition Temperature and the Coefficient of Linear Expansion [J] . Nakanishi Koichi, Kogure Akinori, Deuchi Keiji, Biocontrol Science . 2015,第4期

机译：D值代表的微生物细胞的耐热性可以通过转变温度和线性膨胀系数来估计
2. Symmetric and asymmetric spiro-type colorless poly(ester imide)s with low coefficients of thermal expansion, high glass transition temperatures, and excellent solution-processability [J] . Hasegawa Masatoshi, Takahashi Shinya, Tsukuda Soichi, Polymer: The International Journal for the Science and Technology of Polymers . 2019,第期

机译：对称和不对称螺型无色聚（酯酰亚胺），具有低系数的热膨胀系数，高玻璃过渡温度和优异的解决方案 - 加工性
3. Comments on "Modified wind chill temperatures determined by a whole body thermoregulation model and human-based convective coefficients" by Ben Shabat, Shitzer and Fiala (2013) and "Facial convective heat exchange coefficients in cold and windy environments estimated from human experiments" by Ben Shabat and Shitzer (2012) [J] . Osczevski RJ International Journal of Biometeorology: Journal of the International Society of Biometeorology . 2014,第6期

机译：Ben Shabat，Shitzer和Fiala（2013）评论“由全身温度调节模型和基于人类的对流系数确定的改良风寒温度”，并评论了Ben撰写的“根据人体实验估算的寒冷和有风环境中的面部对流换热系数” Shabat and Shitzer（2012）
4. IMPACT OF THE LINEAR COEFFICIENT OF THERMAL EXPANSION ON THE TEMPERATURE SHOCK RESISTANCE OF TRANSFORMERS AND MODULES [C] . Jens Buerger Electronic Circuits World Convention . 2014

机译：线性膨胀线性膨胀系数对变压器和模块耐温抗冲击性的影响
5. THE EXPERIMENTAL DETERMINATION OF THE LOCAL AND AVERAGE HEAT TRANSFER CHARACTERISTICS AND AVERAGE FRICTION COEFFICIENTS FOR TURBULENT FLOW OF AIR AND ARGON WITH VARIABLE PROPERTIES IN SMOOTH TUBES WITH THE BOUNDARY CONDITIONS OF CONSTANT WALL TEMPERATURE HEATING AND INCREASING HEAT FLUX HEATING. [D] . PRIDEAUX, JEAN PAUL. 1966

机译：具有恒定壁温加热和增加热通量边界条件的光滑管中具有可变特性的空气和氩气湍流的局部和平均传热特性的试验摩擦系数和平均摩擦系数。
6. Thermal expansion coefficient determination of pure doped and co-doped anatase nanoparticles heated in sealed quartz capillaries using in-situ high-temperature synchrotron radiation diffraction [O] . Hani Manssor Albetran 2020

机译：使用原位高温同步同步辐射衍射在密封石英毛细管中加热的纯掺杂和共掺杂和共掺杂锐钛矿纳米粒子的热膨胀系数测定
7. Figure 1: (A–C) Example of annotation of chromosome 3R region by transitional gamma. For a given Hi-C matrix of Schneider-2 cells (A), TAD segmentations (B) are calculated by Armatus for a set of gamma values (from 0 to 10, a step of 0.01). Each line in B represents a single TAD. Then gamma transitional (C) is calculated for each genomic region as the minimal value of gamma where the region becomes inter-TAD or TAD boundary. The blue line in C represents the transitional gamma value for each genomic bin. The plots (B) and (C) are limited by gamma 2 for better visualization, although they are continued to the value of 10. Asterisk (*) denotes the region with gamma transitional of 1.64, the minimal value of gamma, where the corresponding region transitions from TAD to inter-TAD. (D) The histogram of the target value transitional gamma for Schneider-2 cell line. Note the peak at 10. [O] . -1

机译：图1：（A-C）通过过渡γ染色体3R区域注释的例子。对于给定的Hi-C矩阵的Schneider-2细胞（A），TAD分段（B）通过ARMATUS计算一组γ值（从0到10，步骤为0.01）。 B中的每一线代表单个TAD。然后针对每个基因组区域计算γ过渡（C），作为该区域变为TAD或TAD边界的伽马的最小值。 C中的蓝线表示每个基因组箱的过渡伽马值。图（b）和（c）受γ2的限制，以便更好地可视化，尽管它们持续到10.星号（*）表示具有1.64的伽马过渡的区域，伽玛的最小值，相应的伽玛区域从TAD转换到TAD。（d）施导德-2细胞系的靶值过渡γ的直方图。请注意10峰值。
8. A Dilatometer for Measuring Transition Temperatures and Thermal Cubic Coefficients of Expansion in Polymers [R] . Ezell, R. 1972

机译：用于测量聚合物中转变温度和热立方系数的膨胀计

The Heat Resistance of Microbial Cells Represented by D Values Can be Estimated by the Transition Temperature and the Coefficient of Linear Expansion

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