Linked Life Data

9228798

Source:http://linkedlifedata.com/resource/pubmed/id/9228798

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
1-2
pubmed:dateCreated
1997-8-18
pubmed:abstractText
This study describes the development of a method for determining eleven sulphur compounds in wine, which takes into account that thiols are easily oxidizable. The equilibria of the analytes between air and aqueous ethanol were studied and optimised using static headspace gas chromatography in order to obtain the best sensitivities. The influences of parameters such as temperature, time, ionic strength, headspace volume and the volume of headspace injected were determined. A cryogenic trap was used to concentrate the headspace analytes and they were chromatographically analysed using GC temperature programming on a poly(ethylene glycol) capillary column with FPD detection at 394 nm. The power relationship was observed between the chromatography response and a concentration of sulphur compounds in the range 2-150 micrograms l(-1) in the sample. Recoveries were determined by the standard addition technique and were higher than 90% for sulphides and disulphides and close to 80% for thiols. The overall method was successfully used to determine the sulphur compounds in white and red wines.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Jun
pubmed:issn
0021-9673
pubmed:author
pubmed:issnType
Print
pubmed:day
27
pubmed:volume
773
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
261-9
pubmed:dateRevised
2009-1-15
pubmed:meshHeading
pubmed:year
1997
pubmed:articleTitle
Chromatographic analysis of volatile sulphur compounds in wines, using the static headspace technique with flame photometric detection.
pubmed:affiliation
Departament de Química, Escola d'Enologia, Universitat Rovira i Virgili, Spain.
pubmed:publicationType
Journal Article, Research Support, Non-U.S. Gov't