Effect of dose and dose rate of gamma radiation on catalytic activity of catalase

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21340%2F10%3A00176318" target="_blank" >RIV/68407700:21340/10:00176318 - isvavai.cz</a>

Result on the web

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DOI - Digital Object Identifier

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Result language

angličtina

Original language name

Effect of dose and dose rate of gamma radiation on catalytic activity of catalase

Original language description

Catalytic activity of gamma irradiated catalase from bovine liver was studied for hydrogen peroxide decomposition at constant temperature and pressure. The measurement was performed at temperatures 27, 32, 37, 42 and 47 C. Solutions containing 1 and 0.01g dm-3 of catalase in phosphate buffer were used for the study. Repeatability of both sample preparation and kinetics measurement was experimentally verified. Rate constants of the reaction were determined for all temperatures and the activation energywas evaluated from Arrhenius plot. Gamma irradiation was performed using radionuclide source Gammacell 220 at two different dose rates 5.5 and 70 Gy h-1, with doses ranging from 10 to 1000 Gy. The observed reaction of irradiated and non-irradiated catalase with hydrogen peroxide is of the first order. Irradiation significantly decreases catalytic activity of catalase, but the activation energy does not depend on the dose.

Czech name

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Czech description

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Type

J_x - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)

CEP classification

CH - Nuclear and quantum chemistry, photo chemistry

OECD FORD branch

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Project

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Continuities

Z - Vyzkumny zamer (s odkazem do CEZ)

Publication year

2010

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

Journal of Radioanalytical and Nuclear Chemistry

ISSN

0236-5731

e-ISSN

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Volume of the periodical

286

Issue of the periodical within the volume

3

Country of publishing house

HU - HUNGARY

Number of pages

6

Pages from-to

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UT code for WoS article

000285099700004

EID of the result in the Scopus database

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