Bacillus weihenstephanensis can readily evolve for increased endospore heat resistance without compromising its thermotype

2021 ◽  
Vol 341 ◽  
pp. 109072
Author(s):  
Tom Dongmin Kim ◽  
Katrien Begyn ◽  
Sadhana Khanal ◽  
Fatima Taghlaoui ◽  
Marc Heyndrickx ◽  
...  
Keyword(s):  
Heat Resistance ◽  
Bacillus Weihenstephanensis

scholarly journals Modeling the Recovery of Heat-Treated Bacillus licheniformis Ad978 and Bacillus weihenstephanensis KBAB4 Spores at Suboptimal Temperature and pH Using Growth Limits

2014 ◽  
Vol 81 (2) ◽  
pp. 562-568 ◽  
Author(s):  
C. Trunet ◽  
N. Mtimet ◽  
A.-G. Mathot ◽  
F. Postollec ◽  
I. Leguerinel ◽  
...  
Keyword(s):  
Heat Resistance ◽  
Bacillus Licheniformis ◽  
Content Type ◽  
Bacillus Weihenstephanensis ◽  
Heat Treated ◽  
Wide Range ◽  
Growth Limits ◽  
Cardinal Temperature ◽  
Resistance Data ◽  
Recovery Temperature

ABSTRACTThe apparent heat resistance of spores ofBacillus weihenstephanensisandBacillus licheniformiswas measured and expressed as the time to first decimal reduction (δ value) at a given recovery temperature and pH. Spores ofB. weihenstephanensiswere produced at 30°C and 12°C, and spores ofB. licheniformiswere produced at 45°C and 20°C.B. weihenstephanensisspores were then heat treated at 85°C, 90°C, and 95°C, andB. licheniformisspores were heat treated at 95°C, 100°C, and 105°C. Heat-treated spores were grown on nutrient agar at a range of temperatures (4°C to 40°C forB. weihenstephanensisand 15°C to 60°C forB. licheniformis) or a range of pHs (between pH 4.5 and pH 9.5 for both strains). The recovery temperature had a slight effect on the apparent heat resistance, except very near recovery boundaries. In contrast, a decrease in the recovery pH had a progressive impact on apparent heat resistance. A model describing the heat resistance and the ability to recover according to the sporulation temperature, temperature of treatment, and recovery temperature and pH was proposed. This model derived from secondary mathematical models for growth prediction. Previously published cardinal temperature and pH values were used as input parameters. The fitting of the model with apparent heat resistance data obtained for a wide range of spore treatment and recovery conditions was highly satisfactory.

scholarly journals Modeling heat resistance of Bacillus weihenstephanensis and Bacillus licheniformis spores as function of sporulation temperature and pH

2012 ◽  
Vol 30 (1) ◽  
pp. 29-36 ◽  
Author(s):  
Eugénie Baril ◽  
Louis Coroller ◽  
Olivier Couvert ◽  
Ivan Leguérinel ◽  
Florence Postollec ◽  
...  
Keyword(s):  
Heat Resistance ◽  
Bacillus Licheniformis ◽  
Bacillus Weihenstephanensis

279: Inhibition of Cyclooxygenase-2 Pathway Overcomes the Heat-Resistance in Prostate Cancer Cells

2007 ◽  
Vol 177 (4S) ◽  
pp. 93-93
Author(s):  
Makoto Sumitomo ◽  
Kenji Kuroda ◽  
Takako Asano ◽  
Akio Horiguchi ◽  
Keiichi Ito ◽  
...  
Keyword(s):  
Prostate Cancer ◽  
Heat Resistance ◽  
Cancer Cells ◽  
Cyclooxygenase 2 ◽  
Prostate Cancer Cells

DURANICKEL ALLOY 301

Alloy Digest ◽  
1963 ◽  
Vol 12 (6) ◽  
Keyword(s):  
Fracture Toughness ◽  
Corrosion Resistance ◽  
High Temperature ◽  
Heat Resistance ◽  
Physical Properties ◽  
Surface Treatment ◽  
High Strength ◽  
Heat Treating ◽  
International Nickel Company ◽  
Temperature Performance

Abstract DURANICKEL Alloy 301 is a wrought, age-hardenable nickel alloy having high strength, high corrosion and heat resistance. It is recommended for springs, diaphrams, bearings, pump and valve parts. This datasheet provides information on composition, physical properties, hardness, elasticity, and tensile properties as well as fracture toughness and fatigue. It also includes information on high temperature performance and corrosion resistance as well as forming, heat treating, machining, joining, and surface treatment. Filing Code: Ni-83. Producer or source: The International Nickel Company Inc..

MC ALLOY

Alloy Digest ◽  
2014 ◽  
Vol 63 (7) ◽  
Keyword(s):  
Corrosion Resistance ◽  
Heat Resistance

Abstract MC Alloy is composed mostly of nickel with 45% chromium. The alloy has outstanding properties for both corrosion and heat resistance. This datasheet provides information on composition. It also includes information on corrosion resistance as well as forming. Filing Code: Ni-713. Producer or source: Hitachi Metals MMC Superalloy Ltd.

CMN-155

Alloy Digest ◽  
1968 ◽  
Vol 17 (8) ◽  
Keyword(s):  
High Temperature ◽  
Heat Resistance ◽  
Physical Properties ◽  
Gas Turbine ◽  
Base Alloy ◽  
Heat Treating ◽  
Jet Engine ◽  
Iron Base Alloy ◽  
Temperature Performance ◽  
High Oxidation

Abstract CMN-155 is an austenitic iron-base alloy having high oxidation and heat resistance combined with good high temperature properties. It is recommended for jet engine and gas turbine components, high temperature fasteners, and rocket chambers. This datasheet provides information on composition, physical properties, hardness, elasticity, and tensile properties as well as creep. It also includes information on high temperature performance as well as forming, heat treating, machining, and joining. Filing Code: SS-212. Producer or source: Cannon-Muskegon Corporation.

AISI TYPE 308

Alloy Digest ◽  
1963 ◽  
Vol 12 (1) ◽  
Keyword(s):  
Fracture Toughness ◽  
Corrosion Resistance ◽  
Heat Resistance ◽  
Physical Properties ◽  
Tensile Properties ◽  
Heat Treating ◽  
Nickel Steel ◽  
Steel Mills ◽  
Aisi Type ◽  
Type 304

Abstract AISI Type 308 is an austenitic chromium nickel steel with corrosion and heat resistance superior to Type 304. This datasheet provides information on composition, physical properties, hardness, elasticity, and tensile properties as well as fracture toughness and fatigue. It also includes information on corrosion resistance as well as forming, heat treating, machining, and joining. Filing Code: SS-140. Producer or source: Alloy steel mills and foundries.

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