Turon Fabrice, Bachain Philippe, Caro Yanis, Pina Michel, Graille Jean. 2002. Direct method for regiospecific analysis of TAG using [alpha]-MAG. Lipids, 37 (8) : 817-821.
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Résumé : An analytical procedure was developed for regiodistribution analysis of TAG using [alpha]-MAG prepared by an ethyl magnesium bromide deacylation. In the present communication, the deacylation procedure is shown to lead to representative [alpha]-MAG, allowing the composition of the native TAG in the a-position to be determined directly. The composition in the [bêta]-position can then be estimated from the composition of the [alpha]-MAG and TAG according to the formula 3 x TAG - 2 x [alpha]-MAG. The estimates are superior to those obtained using the [alpha],[bêta]-DAG and Brockerhoff calculations as they come closer to the theoretical value and have smaller SID. The present procedure, first demonstrated on a synthetic TAG, was then successfully applied to the analysis of borage oil, milkfat, and tuna oil.
Mots-clés Agrovoc : composition chimique, corps gras, acylation, technique analytique, triglycéride
Mots-clés complémentaires : Triacylglycérol
Classification Agris : Q04 - Composition des produits alimentaires
U30 - Méthodes de recherche
Auteurs et affiliations
- Turon Fabrice, CIRAD-AMIS-AGROALIMENTAIRE (FRA)
- Bachain Philippe
- Caro Yanis, CIRAD-FLHOR-ARF (REU)
- Pina Michel, CIRAD-AMIS-AGROALIMENTAIRE (FRA)
- Graille Jean, CIRAD-AMIS-AGROALIMENTAIRE (FRA)
Autres liens de la publication
Source : Cirad - Agritrop (https://agritrop.cirad.fr/515364/)
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