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Étude des huiles végétales soumises à un stress thermique
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ISBN10: 6209105475
ISBN13: 9786209105470
Publisher: Editions Notre Savoir
Published: Oct 6 2025
Pages: 76
Weight: 0.25
Height: 0.18 Width: 6.00 Depth: 9.00
Language: French
ISBN13: 9786209105470
Publisher: Editions Notre Savoir
Published: Oct 6 2025
Pages: 76
Weight: 0.25
Height: 0.18 Width: 6.00 Depth: 9.00
Language: French
Ce travail montre comment les huiles végétales de canola, de maïs, d'olive, de tournesol et de soja ont été étudiées, à l'état naturel et sous stress thermique. L'application de la RMN de l'hydrogène s'est avérée essentielle dans le contrôle de la qualité des huiles végétales, car elle a permis de déterminer l'indice d'iode, le poids moléculaire (PM) moyen du triacylglycérol, le degré d'insaturation et l'état d'oxydation de l'huile à l'état naturel et après n'importe quelle durée de chauffage, ce qui, avec les méthodes physico-chimiques traditionnelles, serait une tâche ardue et imprécise à de nombreux stades du processus d'analyse de la qualité. De même, la RMN de C13 s'est avérée très utile, car elle a montré des variations significatives dans le profil des carbones C13 des huiles brutes et sous contrainte thermique. Les résultats démontrent que les techniques spectroscopiques sont aujourd'hui des outils indispensables pour le contrôle qualité des huiles végétales.
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