• Title, Summary, Keyword: hydrogen peroxide

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The Effect of Hydrogen Peroxide-Treated Metallothionein on the Hepatic Xanthine Oxidase Activity

  • Huh, Keun;Shin, Uk-Seob;Lee, Sang-Il
    • BMB Reports
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    • v.28 no.6
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    • pp.490-493
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    • 1995
  • We investigated the effect of hydrogen peroxide-treated metallothionein on the hepatic xanthine oxidase activity in vitro. When the metallothionein was preincubated with 1 mM of hydrogen peroxide, the activity of xanthine oxidase and type conversion were elevated dose-dependently by the addition of metallothionein into the reaction mixture. While increasing the treatment of hydrogen peroxide to the $50{\mu}g$of metallothionein, the xanthine oxidase activity and type conversion ratio were remarkably elevated dose dependently compared to the control. When cadmium ion was added to the reaction mixture, the increasing pattern of the enzyme activity was similar to the effect of hydrogen peroxide-treated metallothionein. DTT or penicillamine restored the increasing activity and type conversion of xanthine oxidase by the cadmium ion to the control level.

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Study on Possibility of Diesel Reforming with Hydrogen Peroxide in Low-Oxygen Environments (산소희박환경에서 과산화수소를 이용한 디젤개질 가능성 탐구)

  • Han, Gwangwoo;Bae, Minseok;Bae, Joongmyeon
    • Korean Chemical Engineering Research
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    • v.53 no.5
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    • pp.584-589
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    • 2015
  • For effective power generation with fuel cells in low-oxygen environments such as submarines and unmanned underwater vehicles, a hydrogen source which has a high hydrogen storage density is required. Diesel fuel is easy to storage and supply due to its liquid phase and it has a high density per unit volume and unit mass of hydrogen that required for driving the fuel cells. In this paper, diesel fuel was selected as a hydrogen source for driving the fuel cell in oxygen lean environments. In addition, the aqueous hydrogen peroxide solution was suggested as an alternative oxidant for hydrogen production through the diesel reforming reaction because of its high oxygen density and liquid phase which makes it easy to storage. In order to determine the characteristics of hydrogen peroxide as an oxidant of diesel reforming, comparative experiments were conducted and it was found that hydrogen peroxide solution has the same characteristics when reformed with oxidants of both steam and oxygen. Moreover, the commercial diesel reforming performances were analyzed according to the reaction temperature and concentration of aqueous hydrogen peroxide solution. Then, through the 49 hours accelerated degradation tests, the possibility of hydrogen production via diesel and aqueous hydrogen peroxide solution was confirmed.

Effects of Red Ginseng-Ejung-tang and White Ginseng-Ejung-tang Water Extract on Hydrogen Peroxide Production in RAW 264.7 Cells (백삼(白蔘)과 홍삼(紅蔘)이 포함된 이중탕(理中湯)의 마우스 대식세포 내 hydrogen peroxide 생성에 미치는 영향)

  • Park, Wan-Su
    • Journal of Physiology & Pathology in Korean Medicine
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    • v.25 no.1
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    • pp.78-83
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    • 2011
  • The purpose of this study is to investigate whether the intracellular hydrogen peroxide productions of mouse macrophage RAW 264.7 are modulated by Red Ginseng-Ejung-tang water extract (ER) and White Ginseng-Ejung-tang water extract (EG). Red Ginseng-Ejung-tang were composed of Red Ginseng, Atractylodes rhizome white, Zingiberis Rhizoma Siccus, and Glycyrrhizae Radix. White Ginseng-Ejung-tang were composed of White Ginseng, Atractylodes rhizome white, Zingiberis Rhizoma Siccus, and Glycyrrhizae Radix. The intracellular hydrogen peroxide productions were measured by dihydrorhodamine 123 assay with spectrofluorometer (excitation 485 nm; emission 535 nm). For 4, 20, 24, 44, 48, 68, and 72 h incubation, ER significantly increased hydrogen peroxide productions of RAW 264.7 at the concentration of 25, 50, 100, and $200{\mu}g/mL$ (P <0.05). EG for 4, 20, 24, 44, and 48 h incubation significantly increased hydrogen peroxide productions of RAW 264.7 at the concentration of 25, 50, 100, and $200{\mu}g/mL$ (P <0.05). For 68 and 72 h incubation, EG at the concentration of 50, 100, and $200{\mu}g/mL$ significantly increased hydrogen peroxide productions in RAW 264.7 (P <0.05). These results suggest that ER and EG have the immune-enhancing properties related with their increasing effects on the intracellular hydrogen peroxide production of macrophage.

Inactivation of Escherichia coli O157:H7, Salmonella Enteritidis and Listeria monocytogenes by Hydrogen Peroxide and Lactic acid (과산화수소와 유산ol Escherichia coli O157:H7, Salmonella Enteritidis 및 Listeria monocytogenes의 증식 억제에 미치는 영향)

  • Jang Jae-Seon;Lee Mi-Yeon;Lee Jea-Mann;Kim Yong-Hee
    • Journal of environmental and Sanitary engineering
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    • v.19 no.4
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    • pp.69-75
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    • 2004
  • The inhibitory effect of the food processing agent on growth of Escherichia coli O157:H7, Salmonella Enteritidis, and Listeria monocytogenes was performed with hydrogen peroxide and lactic acid, and combination of hydrogen peroxide and lactic acid. The minimun inhibitory concentration (MIC) of hydrogen peroxide in E coli O157:H7 was 100 ppm at pH 5.0, 6.0, 6.5 and 7.0, while in Listeria monocytogenes 25 ppm at PH 5.5, 6.0 and 50 ppm at PH 6.5, 75ppm at pH 7.0. MIC of lactic acid in E coli O157:H7 was 2500 ppm at pH 5.0, 6.0, 6.5 and 7.0. MIC of lactic acid in S. Enteritidis was 1250 ppm at pH 5.0, 2500 ppm at pH 5.5, 6.0, 5.5 and 7.0, while in L monocytogenes 625 ppm at pH 5.5 and 125 ppm at pH 6.0, 6.5 and 7.0. MIC of combined hydrogen Peroxide and lactic acid in E. coli O157:H7, S. Enteritidis, and L. monocytogenes was 75 ppm of hydrogen peroxide with 2500 ppm of lactic acid at pH 6.5. The correlations between MICs of hydrogen peroxide and lactic acid in E. coli O157:H7, S. Enteritidis and L. monocytogene were obtained through the coefficient of $determination(R^2)$. $R^2$ value were 0.9994, 0.9935 and 0.9283, respectively. The inhibitory effect of hydrogen peroxide and lactic acid in E. coli O157:H7, S. Enteritidis and L. monocytogenes could be confirmed from the result of this experiment. Therefore, it was expected that the food process would increase or maintain by using lactic acid together with hydrogen peroxide.

Antimicrobial Effect of Lactic acid and Hydrogen Peroxide and Distribution of Vibrio parahaemolyticus from the Incheon Adjacent Sea (인천연안 Vibrio parahaemolyticus의 분포 및 유산과 과산화수소 처리에 의한 항균효과)

  • Jang, Jae-Seon;Cho, Woo-Kyoun;Lee, Hye-Jeong;Lee, Jea-Mann;Kim, Hye-Young;Kim, Yong-Hee
    • Journal of environmental and Sanitary engineering
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    • v.21 no.4
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    • pp.11-18
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    • 2006
  • This study was carried out to investigate the distribution of Vibrio parahaemolyticus in the Incheon adjacent sea, and antimicrobial effect on growth of Vibrio parahaemolyticus in lactic acid and hydrogen peroxide and combination of lactic acid and hydrogen peroxide. The detected strains were compared geographical, months and sample types. The distribution of Vibrio parahaemolyticus was high at Ganghwa county with 66.1%(336 samples), on 7-9 months with 72.4%(386 samples) and from tireland with 75.0%(90 samples), respectively. The minimun inhibitory concentration (MIC) of lactic acid in Vibrio parahaemolyticus were 1250 ppm at pH 6.5 and 7.0, 625 ppm at pH 6.0. respectively. The minimun inhibitory concentration (MIC) of hydrogen peroxide in Vibrio parahaemolyticus were 25 ppm at pH 6.5 and 7.0, 12.5 ppm at pH 6.0, respectively. MICs of combined treatment of lactic acid and hydrogen peroxide in Vibrio parahaemolyticus were 625 ppm of lactic acid with 12.5 ppm of hydrogen peroxide. The correlations between MICs of lactic acid and hydrogen peroxide in Vibrio parahaemolyticus were obtained through the coefficient of determination($R^2$). $R^2$ value were 1.0000. The antimicrobial effect of lactic acid and hydrogen peroxide in Vibrio parahaemolyticus could be confirmed from the result of this experiment.

Storage Stability of the Commercial Hydrogen Peroxide, Sodium Hypochlorite, Glutaraldehyde and Didecyl Dimethyl Ammonium Chloride (DDAC) (시판 Hydrogen Peroxide, Sodium Hypochlorite, Glutaraldehyde 및 Didecyl Dimethyl Ammonium Chloride (DDAC)의 보존 안전성)

  • Park, Kyung-Hee;Kim, Seok-Ryel;Kang, So-Young;Jung, Sung-Ju;Kim, Heung-Yun;Kim, Do-Hyung;Oh, Myung-Joo
    • Journal of Aquaculture
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    • v.21 no.3
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    • pp.172-175
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    • 2008
  • We evaluated storage stability of hydrogen peroxide, sodium hypochlorite, glutaraldehyde and didecyl dimethyl ammonium chloride (DDAC). Hydrogen peroxide and DDAC have been stabilized for 6-month storage at room temperature and $4^{\circ}C$ after opening. However sodium hypochlorite and glutaraldehyde were degraded to 15% and 39% for 6 month storage at $4^{\circ}C$ after opening, respectively. Therefore we have to take special attention wherever long term storing hydrogen peroxide and DDAC, also organic contents and pH in water should be considered for effective application in fish farms.

Elctrokinetic-Fenton 기법 적용시 토질조건과 오염원의 종류에 따른 과산화수소의 주입특성

  • 김정환;김병일;한상재;김수삼
    • Proceedings of the Korean Society of Soil and Groundwater Environment Conference
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    • pp.30-33
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    • 2002
  • In this study, feasibility of using hydrogen peroxide as a chemical oxidant for in-situ treatment by EK-Fenton technology were investigated. Kaolinite, kaolinite/sand mixture and illitic soil spiked by phenol and phenanathrene were used and variation of electrochemical characteristics were examined by EK-Fenton test. For kaolinite that having low buffer capacity, hydrogen peroxide was injected effectively from anode reservoir. However illitic soil that having relatively higher buffer capacity had low hydrogen peroxide introducing efficiency. The test results showed that Hydrogen ions generated by current increased during the treatment decreased under pH 3 in the most of kaolinite specimen. Therefore, stabilized hydrogen oxide was injected more effectively in the kaolinite specimen. This study suggests that efficiency of hydrogen peroxide injection by EK-Fenton thechnoloty is dependent of variation of pH in the soil

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A clean technology development using the molybdenum dissolution reaction with hydrogen peroxide/UV/Ozone ($오존/UV/H_2O_2$를 이용한 몰리브덴(Mo) 용해 반응에 따른 청정기술 개발에 관한 연구)

  • 김재우;홍종순;신대윤
    • Journal of environmental and Sanitary engineering
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    • v.14 no.4
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    • pp.143-149
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    • 1999
  • In the tungsten industry as light source material, tungsten filament which used as light source material could form after molybdenumwire which used as the center supporter for coil shape tungsten wire was removed. This process uses hydrogen peroxide, Ozone and UV(Ultraviolet)Lamp, for the quantity of hydrogen peroxide decrease. The results were as follows : 1. An incandescent electric Lamp type : FL(FL-20) type : A standard of commodity (P.W.: $19{\pm}1.0mg$, $C.R:4.5{\pm}0.3{\Omega}$) 1) Only hydrogen peroxide treated ; Reaction Time : 65Min., P.W.: 18.60mg, $C.R.:4.60{\Omega}$ 2) Ozone/Ultraviolet/70% of hydrogen peroxide; Reaction Time : 64Min., P.W.: 18.61mg, C.R.: $4.61{\Omega}$ 2. A Fluorescent Lamp Type : GLS(GLS-40) Type : A standard of commodity(P.W.: $11.8{\pm}0.2mg$$65{\pm}1.5{\Omega}$) 1) Only hydrogen peroxide treated ; Reaction Time: 72Min, P.W.:11.88mg, C.R.: $65.62\Omega$ 2) Ozone/Ultraviolet/70% of hydrogen peroxide;Reaction Time:71Min., P.W.:11.88mg, C.R.: $65.63\Omega$

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Vacuum Distillation of Rocket Grade Hydrogen Peroxide with Temperature (온도 조건에 따른 추진제급 과산화수소의 진공 증류)

  • Chung, Seung-Mi;An, Sung-Yong;Kwon, Se-Jin
    • Proceedings of the Korean Society of Propulsion Engineers Conference
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    • pp.89-92
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    • 2009
  • Because many research using concentrated hydrogen peroxide as propellant is studied, research for distillation method for domestic production of rocket grade hydrogen peroxide is needed. To distill hydrogen peroxide, vacuum distillation will be used because of heat decomposition of hydrogen peroxide. Distillation pressure is 30 torr which is determined by Raoult's law to distill under $40^{\circ}C$. Variable of distillation experiment is distillation temperature. And the comparison of distillation results was done by yield and operation time. In the result, generally, yield was lower and the water in receiver had higher concentration with shorter distillation time. And with similar time, when distillation temperature was higher, yield was lower and hydrogen peroxide became higher concentration.

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Effect of Emodin on Hydrogen Peroxide Production in Polyinosinic-Polycytidylic acid-induced Human Neuroblastoma SH-SY5Y Cells (Emodin이 polyinosinic-polycytidylic acid로 유발된 인간 신경모세포종 SH-SY5Y의 hydrogen peroxide 생성증가에 미치는 영향)

  • Lee, Ji-Young;Kim, Young-Jin;Park, Wan-Su
    • Journal of Physiology & Pathology in Korean Medicine
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    • v.25 no.6
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    • pp.1039-1043
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    • 2011
  • The purpose of this study is to investigate the modulatory effect of emodin on hydrogen peroxide production in human blastoma SH-SY5Y cells induced by the synthetic analog of double-stranded RNA [polyinosinic-polycytidylic acid]. Hydrogen peroxide production was measured by dihydrorhodamine 123 (DHR) assay. Emodin significantly inhibited the polyinosinic-polycytidylic acid (PIC)-induced production of hydrogen peroxide for 0.5, 2, 12, 18, and 24 hr incubation at the concentrations of 5, 10, 25, and 50 uM in SH-SY5Y (P < 0.05) in dose dependent manner. These results suggest that emodin has neuroprotective property related with its inhibition of hydrogen peroxide production in PIC-induced neuronal cells.