Linked Life Data

907272

Source:http://linkedlifedata.com/resource/pubmed/id/907272

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
1
pubmed:dateCreated
1977-11-25
pubmed:abstractText
Addition of great quantity of alpha-tocopherol to an aqueous solution containing linoleic acid dispersed with twen 20 conduce to an important augmentation of the rate of formation of linoleic hydroperoxides. In these particular conditions, alpha-tocopherol have a prooxidant effect. In the same time, alpha-tocopherol is rapidly transformed into tocopherylquinone and a dimer of alpha-tocopherol. Transitorily there is formation of a dihydroxydimer of alpha-tocopherol. Comparison of these compounds behaviour on the oxydation rate of linoleic acid in the same conditions show a near relation between a prooxidant effect and chemical structure of these compounds as well as alpha-tocopherol. So, alpha-tocopherol and its dihydroxydimer are both prooxidant and both have a free hydroxyl on carbon 6. Dimer of alpha-tocopherol and tocopherylquinone are both antioxidant and they have neither free hydroxyl on carbon 6. alpha-tocopherol acetate in the same conditions have an antioxidant comportment. This confirms the importance of free hydroxyl on carbon 6 to obtain a prooxidant effect.
pubmed:language
fre
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:issn
0003-4037
pubmed:author
pubmed:issnType
Print
pubmed:volume
31
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
27-42
pubmed:dateRevised
2008-11-21
pubmed:meshHeading
pubmed:year
1977
pubmed:articleTitle
[Behavior of alpha-tocopherol during the autoxidation of linoleic acid in aqueous solution].
pubmed:publicationType
Journal Article, English Abstract