Linked Life Data

17928223

Source:http://linkedlifedata.com/resource/pubmed/id/17928223

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
10
pubmed:dateCreated
2008-3-17
pubmed:abstractText
Horseradish peroxidase (HRP) was used to catalyze the oxidation of bisphenol A (BPA) in a reverse micelle system consisting of water, sodium bis(2-ethylhexyl)sulfosuccinate (AOT) as the surfactant, and n-octane as the organic solvent phase. In order to achieve maximal BPA transformation, a water-to-surfactant molar ratio greater than 15 was required, above which no further increase in conversion was observed. BPA transformation was catalyzed in the reverse micelle system over a pH range of 6-9 with an optimum at pH 7 and was enhanced with increasing temperatures up to 40 degrees C. The stoichiometric ratio of moles of bisphenol A transformed per mole of peroxide consumed was 0.46 when the initial BPA concentration was 0.01 mM, which is significantly less than the theoretical value of 2 based on the known catalytic cycle of the enzyme. However, the stoichiometric ratio increased and approach the theoretical value with higher BPA concentrations. Over the course of the catalytic reaction, the enzyme became inactivated. Hydrogen peroxide strongly inhibited the enzyme and, thus, when the oxidant was present in quantities in excess of the stoichiometric amount, BPA transformation was significantly reduced.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Jul
pubmed:issn
0960-8524
pubmed:author
pubmed:issnType
Print
pubmed:volume
99
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
4428-37
pubmed:meshHeading
pubmed:year
2008
pubmed:articleTitle
Biocatalytic oxidation of bisphenol A in a reverse micelle system using horseradish peroxidase.
pubmed:affiliation
Security and Environment Engineering College, Capital University of Economics and Business, Beijing 100026, China.
pubmed:publicationType
Journal Article