Performance evaluation of bactericidal effect and endotoxin inactivation by low‐temperature ozone/hydrogen peroxide mixed gas exposure

2021 ◽  
Author(s):  
Yusuke Nomura ◽  
Junji Yamamura ◽  
Chie Fukui ◽  
Hideo Fujimaki ◽  
Kazuyuki Sakamoto ◽  
...  
Keyword(s):  
Hydrogen Peroxide ◽  
Performance Evaluation ◽  
Low Temperature ◽  
Bactericidal Effect ◽  
Mixed Gas ◽  
Gas Exposure

Performance evaluation of a vane motor driven by liquefied hydrogen peroxide

2013 ◽  
Vol 14 (7) ◽  
pp. 1163-1167 ◽  
Author(s):  
Deuk-Eui Hong ◽  
Ga-Ram Ryu ◽  
Kwon-Hee Lee ◽  
Seung-Ho Han
Keyword(s):  
Hydrogen Peroxide ◽  
Performance Evaluation

EXERGOECONOMIC ANALYSIS ON ENHANCED HEAT TRANSFER SURFACES AT LOW TEMPERATURE

2007 ◽  
Vol 21 (18n19) ◽  
pp. 3500-3502
Author(s):  
DENG-FANG RUAN ◽  
YOU-RONG LI ◽  
SHUANG-YING WU ◽  
BO LAN
Keyword(s):  
Heat Transfer ◽  
Performance Evaluation ◽  
Low Temperature ◽  
Evaluation Criteria ◽  
Enhanced Heat Transfer ◽  
Second Law Analysis ◽  
Augmentation Techniques ◽  
Transfer Cost ◽  
Exergoeconomic Analysis ◽  
New Criterion

The exergoeconomic analysis is carried out on enhanced heat transfer surfaces at low temperature. A new criterion for evaluating the performance of enhanced heat transfer surfaces at low temperature is proposed. It can be applied to various augmentation techniques and generalizes the performance evaluation criteria obtained by means of the first and second law analysis. The validity of the new performance evaluation criterion is illustrated by the analysis of heat transfer characteristics at low temperature and assessment of the heat transfer cost of two types of enhanced heat transfer surfaces.

Potentiation by L-cysteine of the bactericidal effect of hydrogen peroxide in Escherichia coli

1982 ◽  
Vol 152 (1) ◽  
pp. 81-88
Author(s):  
E H Berglin ◽  
M B Edlund ◽  
G K Nyberg ◽  
J Carlsson
Keyword(s):  
Escherichia Coli ◽  
Hydrogen Peroxide ◽  
Metal Ion ◽  
Chelating Agent ◽  
Fold Increase ◽  
Bactericidal Effect ◽  
Anaerobic Conditions ◽  
Dna Breakage ◽  
E Coli ◽  
K 12

Under anaerobic conditions an exponentially growing culture of Escherichia coli K-12 was exposed to hydrogen peroxide in the presence of various compounds. Hydrogen peroxide (0.1 mM) together with 0.1 mM L-cysteine or L-cystine killed the organisms more rapidly than 10 mM hydrogen peroxide alone. The exposure of E. coli to hydrogen peroxide in the presence of L-cysteine inhibited some of the catalase. This inhibition, however, could not fully explain the 100-fold increase in hydrogen peroxide sensitivity of the organism in the presence of L-cysteine. Of other compounds tested only some thiols potentiated the bactericidal effect of hydrogen peroxide. These thiols were effective, however, only at concentrations significantly higher than 0.1 mM. The effect of L-cysteine and L-cystine could be annihilated by the metal ion chelating agent 2,2'-bipyridyl. DNA breakage in E. coli K-12 was demonstrated under conditions where the organisms were killed by hydrogen peroxide.

Antimicrobial Effects of Novel H2O2-Ag+ Complex on Membrane Damage to Staphylococcus aureus,Escherichia coli and Salmonella typhimurium

2021 ◽  
Author(s):  
Bing Han ◽  
Xiaoyu Han ◽  
Mengmeng Ren ◽  
Yilin You ◽  
Jicheng Zhan ◽  
...  
Keyword(s):  
Escherichia Coli ◽  
Hydrogen Peroxide ◽  
Staphylococcus Aureus ◽  
Salmonella Typhimurium ◽  
Membrane Damage ◽  
Bactericidal Effect ◽  
E Coli ◽  
Bacterial Cell Membrane ◽  
Time Kill ◽  
Environmental Disinfection

Diseases caused by harmful microorganisms pose a serious threat to human health. Safe and environment-friendly disinfectants are, therefore, essential in preventing and controlling such pathogens. This study aimed to investigate the antimicrobial activity and mechanism of a novel hydrogen peroxide and silver (H 2 O 2 -Ag + ) complex (HSC) in combatting Staphylococcus aureus ATCC 29213, Escherichia coli O157:H7 NCTC 12900 and Salmonella typhimurium SL 1344. The minimum inhibitory concentration (MIC) and minimum bactericidal concentration (MBC) values against S. aureus were found to be 0.014 % H 2 O 2 -3.125 mg/L Ag + , while 0.028 % H 2 O 2 -6.25 mg/L Ag + for both E. coli and S. typhimurium . Results of the growth curve assay and time-kill trial suggest that the HSC could inhibit the growth of the tested bacteria, as 99.9 % of viable cells were killed following treatment at the 1 MIC for 3 h. Compared with Oxytech D10 disinfectant (0.25 % H 2 O 2 -5 mg/L Ag + ), the HSC exhibited better antibacterial efficacy at a lower concentration (0.045 % H 2 O 2 -10 mg/L Ag + ). The mechanism of antibacterial action of HSC was found including the disruption of the bacterial cell membrane, followed by entry into the bacteria cell to reduce intracellular adenosine triphosphate (ATP) concentration, and inhibit the activity of antioxidases, superoxide dismutase (SOD) and catalase (CAT). The enhanced bactericidal effect of hydrogen peroxide combined with silver indicates a potential for its application in environmental disinfection, particularly in the food industry.

Performance Evaluation on Mass Transport in Cathode-side Molybdenum Electrodes for a Low-temperature-type AMTEC Cell.

2004 ◽  
Vol 30 (1) ◽  
pp. 73-78 ◽  
Author(s):  
Kotaro TANAKA ◽  
Toshio NAKAGIRI ◽  
Takahiro FUJII ◽  
Takeo HONDA
Keyword(s):  
Performance Evaluation ◽  
Low Temperature ◽  
Mass Transport ◽  
Cathode Side

Performance Evaluation of a Low-temperature-type AMTEC Cell.

2001 ◽  
Vol 27 (6) ◽  
pp. 819-823 ◽  
Author(s):  
Kotaro Tanaka ◽  
Takahiro Fujii ◽  
Takeo Honda
Keyword(s):  
Performance Evaluation ◽  
Low Temperature

scholarly journals Bactericidal Effect of Hydrogen Peroxide on Spacecraft Isolates

1975 ◽  
Vol 30 (4) ◽  
pp. 710-711 ◽  
Author(s):  
M. D. Wardle ◽  
G. M. Renninger
Keyword(s):  
Hydrogen Peroxide ◽  
Bactericidal Effect

scholarly journals Bactericidal effect of hydrogen peroxide is prevented by the lactoperoxidase-thiocyanate system under anaerobic conditions

1980 ◽  
Vol 29 (3) ◽  
pp. 1190-1192
Author(s):  
J Carlsson
Keyword(s):  
Hydrogen Peroxide ◽  
Bactericidal Effect ◽  
Molar Ratio ◽  
Anaerobic Conditions ◽  
Streptococcus Sanguis

Streptococcus sanguis and Peptostreptococcus anaerobius were exposed to various combinations of the components of the lactoperoxidase-thiocyanate-hydrogen peroxide system. The bactericidal effect of hydrogen peroxide was prevented under anaerobic conditions by lactoperoxidase together with thiocyanate, but not by lactoperoxidase or thiocyanate alone. Thiocyanate was effective already at a molar ratio to hydrogen peroxide of 1:100.

Bactericidal effect of hydroxyl radicals generated by the sonolysis and photolysis of hydrogen peroxide for endodontic applications

2017 ◽  
Vol 103 ◽  
pp. 65-70 ◽  
Author(s):  
Haruna Ibi ◽  
Makoto Hayashi ◽  
Fumihiko Yoshino ◽  
Muneaki Tamura ◽  
Ayaka Yoshida ◽  
...  
Keyword(s):  
Hydrogen Peroxide ◽  
Hydroxyl Radicals ◽  
Bactericidal Effect

Performance evaluation of a low-temperature solar Rankine cycle system utilizing R245fa

Solar Energy ◽  
2010 ◽  
Vol 84 (3) ◽  
pp. 353-364 ◽  
Author(s):  
X.D. Wang ◽  
L. Zhao ◽  
J.L. Wang ◽  
W.Z. Zhang ◽  
X.Z. Zhao ◽  
...  
Keyword(s):  
Performance Evaluation ◽  
Low Temperature ◽  
Rankine Cycle ◽  
Cycle System
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