Horseradish peroxidase-catalyzed hydrogelation consuming enzyme-produced hydrogen peroxide in the presence of reducing sugars

Soft Matter ◽  
2019 ◽  
Vol 15 (10) ◽  
pp. 2163-2169 ◽  
Author(s):  
Enkhtuul Gantumur ◽  
Shinji Sakai ◽  
Masaki Nakahata ◽  
Masahito Taya
Keyword(s):  
Hydrogen Peroxide ◽  
Horseradish Peroxidase ◽  
Reducing Sugars ◽  
Reaction System ◽  
System P

Three kinds of reducing sugars are applied to HRP-catalyzed hydrogelation to promote the generation of H2O2 in the reaction system.

scholarly journals Au Modified F-TiO2 for Efficient Photocatalytic Synthesis of Hydrogen Peroxide

Molecules ◽  
2021 ◽  
Vol 26 (13) ◽  
pp. 3844
Author(s):  
Lijuan Li ◽  
Bingdong Li ◽  
Liwei Feng ◽  
Xiaoqiu Zhang ◽  
Yuqian Zhang ◽  
...  
Keyword(s):  
Hydrogen Peroxide ◽  
Reaction System ◽  
Reaction Medium ◽  
Pure Tio2 ◽  
H2o2 Production ◽  
Tio2 Photocatalyst ◽  
H2o2 Decomposition ◽  
Spin Resonance ◽  
Photocatalytic Synthesis

In this work, Au-modified F-TiO2 is developed as a simple and efficient photocatalyst for H2O2 production under ultraviolet light. The Au/F-TiO2 photocatalyst avoids the necessity of adding fluoride into the reaction medium for enhancing H2O2 synthesis, as in a pure TiO2 reaction system. The F− modification inhibits the H2O2 decomposition through the formation of the ≡Ti–F complex. Au is an active cocatalyst for photocatalytic H2O2 production. We compared the activity of TiO2 with F− modification and without F− modification in the presence of Au, and found that the H2O2 production rate over Au/F-TiO2 reaches four times that of Au/TiO2. In situ electron spin resonance studies have shown that H2O2 is produced by stepwise single-electron oxygen reduction on the Au/F-TiO2 photocatalyst.

scholarly journals Monitoring the heme iron state in horseradish peroxidase to detect ultratrace amounts of hydrogen peroxide in alcohols

RSC Advances ◽  
2021 ◽  
Vol 11 (17) ◽  
pp. 9901-9910
Author(s):  
Raheleh Ravanfar ◽  
Alireza Abbaspourrad
Keyword(s):  
Hydrogen Peroxide ◽  
Horseradish Peroxidase ◽  
Oxidative Damage ◽  
Heme Iron ◽  
Aqueous Systems ◽  
Iron State ◽  
Low Concentrations

Despite the importance of hydrogen peroxide (H2O2) in initiating oxidative damage and its connection to various diseases, the detection of low concentrations of H2O2 (<10 μM) is still limited using current methods, particularly in non-aqueous systems.

scholarly journals The Reaction of Ferrous Horseradish Peroxidase with Hydrogen Peroxide

1970 ◽  
Vol 245 (9) ◽  
pp. 2409-2413
Author(s):  
Robert W. Noble ◽  
Quentin H. Gibson
Keyword(s):  
Hydrogen Peroxide ◽  
Horseradish Peroxidase

scholarly journals Fluorescent Derivatization of Aromatic Carboxylic Acids with Horseradish Peroxidase in the Presence of Excess Hydrogen Peroxide

2015 ◽  
Vol 31 (1) ◽  
pp. 37-44
Author(s):  
Junichi ODO ◽  
Masahiko INOGUCHI ◽  
Hiroyuki AOKI ◽  
Yuto SOGAWA ◽  
Masahiro NISHIMURA
Keyword(s):  
Hydrogen Peroxide ◽  
Horseradish Peroxidase ◽  
Carboxylic Acids ◽  
Aromatic Carboxylic Acids ◽  
Excess Hydrogen

scholarly journals Detection of a Tryptophan Radical as an Intermediate Species in the Reaction of Horseradish Peroxidase Mutant (Phe-221 → Trp) and Hydrogen Peroxide

1998 ◽  
Vol 273 (24) ◽  
pp. 14753-14760 ◽  
Author(s):  
Atsushi Morimoto ◽  
Motomasa Tanaka ◽  
Satoshi Takahashi ◽  
Koichiro Ishimori ◽  
Hiroshi Hori ◽  
...  
Keyword(s):  
Hydrogen Peroxide ◽  
Horseradish Peroxidase ◽  
Intermediate Species

APPLICABILITY OF BRAY-LIEBHAFSKY REACTION FOR CHEMICAL COMPUTING

2021 ◽  
Author(s):  
Željko Čupić ◽  
◽  
Ana I vanović Šašić ◽  
Stevan Maćešić ◽  
Slobodan Anić ◽  
...  
Keyword(s):  
Hydrogen Peroxide ◽  
Numerical Simulations ◽  
Reaction System ◽  
Dynamic State ◽  
Oscillatory Reaction ◽  
Oscillatory Reactions ◽  
Dynamic States

The first discovered homogeneous oscillatory reaction was the Bray-Liebhafsky (BL) one, described in a paper published exactly 100 years ago. However, the applicability of oscillatory reactions in chemical computing was recently discovered. Here we intend to expose the native computing concept applied to intermittent states of the BL reaction, because we believe that this particular state may have some advantages. For this purpose, numerical simulations will be used based on the known model. Sequences of perturbations will be introduced by adding iodate (IO3-) and hydrogen peroxide (H2O2), separately, as well as in various combinations with one another. It will be shown that dynamic states obtained after perturbations with same species depend very much on the sequence in which these species were used in perturbations. Additionally, it will be shown that obtained dynamic states shift the system from chaotic intermittent dynamic state to different complex periodic states. Hence, the applicability of the BL reaction system in chemical computing was demonstrated.

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