Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
2
pubmed:dateCreated
2010-10-4
pubmed:abstractText
The assay conditions for the spectrophotometric quantification of horseradish peroxidase (HRP) with the chromogenic substrate o-phenylenediamine (OPD) at 25°C in the presence of hydrogen peroxide (H(2)O(2)) were optimized. With [OPD](0)=3.14 mM and [H(2)O(2)](0)=80 ?M at pH 7.2, the initial formation of only one of the possible reaction products and intermediates, 2,3-diaminophenazine (DAP, ?(max)=417 nm), was observed. The rate of DAP formation during the first 30 min of reaction was followed spectrophotometrically and found to linearly depend on the HRP concentration between 5 and 45 pM under the conditions used.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Dec
pubmed:issn
1096-0309
pubmed:author
pubmed:copyrightInfo
Copyright © 2010 Elsevier Inc. All rights reserved.
pubmed:issnType
Electronic
pubmed:day
15
pubmed:volume
407
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
293-5
pubmed:meshHeading
pubmed:year
2010
pubmed:articleTitle
Spectrophotometric quantification of horseradish peroxidase with o-phenylenediamine.
pubmed:affiliation
Department of Materials, ETH Zürich, CH-8093 Zürich, Switzerland.
pubmed:publicationType
Journal Article, Research Support, Non-U.S. Gov't