Linked Life Data

12052729

Source:http://linkedlifedata.com/resource/pubmed/id/12052729

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
1
pubmed:dateCreated
2002-6-7
pubmed:abstractText
A reversed-phase HPLC method compatible with evaporative light scattering (ELS) and electrospray mass spectrometric (ES-MS) detection was developed for separation of phosphatidylserine (PS) molecular species. The method was optimised for separation of three disaturated synthetic species: dipalmitoyl glycerophosphoserine, palmitoyl-stearoyl glycerophosphoserine and distearoyl glycerophosphoserine using isocratic elution with a mixture of 2-propanol, tetrahydrofuran and ammonium formate. Baseline separation was obtained on three different columns: one polystyrene/divinylbenzene (PS/DVB) column and two silica based C(18) and C(30) columns. The best chromatographic resolution was achieved with the C(30) column. The limit of detection for DPPS was 5 microg/ml (S/N=3) with ELS detection and 0.1 microg/ml (S/N=3) with negative ion ES-MS in the single ion monitoring mode. Baseline separation of the five main species in a biological PS sample, bovine brain PS, was obtained with the PS/DVB column. Species identification was done by using the retention times of the intact PS species and their corresponding carboxylate anion fragments obtained by in-source fragmentation. Data have shown that individual PS species can be identified by their retention times using direct ELS detection in a mixture of disaturated PS species. However, for the bovine brain PS electrospray-MS detection was necessary for species identification due to the many possible fatty acid combinations in biological PS.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Jul
pubmed:issn
1570-0232
pubmed:author
pubmed:issnType
Print
pubmed:day
5
pubmed:volume
774
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
115-20
pubmed:dateRevised
2003-11-14
pubmed:meshHeading
pubmed:year
2002
pubmed:articleTitle
Separation and identification of phosphatidylserine molecular species using reversed-phase high-performance liquid chromatography with evaporative light scattering and mass spectrometric detection.
pubmed:affiliation
Department of Chemistry, University of Oslo, PO Box 1033, Blindern, 0315 Oslo, Norway. aasmunl@kjemi.uio.no
pubmed:publicationType
Journal Article