Purification of degummed crude sunflower oil with selected metal-organic frameworks as adsorbents

E. Yılmaz; A. K. Erden

doi:10.3989/gya.0930182

Autores/as

E. Yılmaz Çanakkale Onsekiz Mart University, Faculty of Engineering, Department of Food Engineering https://orcid.org/0000-0003-1527-5042
A. K. Erden Çanakkale Onsekiz Mart University, Faculty of Engineering, Department of Food Engineering https://orcid.org/0000-0001-5024-4618

DOI:

https://doi.org/10.3989/gya.0930182

Palabras clave:

Aceite crudo, Ácido graso libre, Adsorción, Estructura metal-orgánica, Peróxido, Purificación

Resumen

Los objetivos de este estudio fueron investigar la efectividad de siete estructuras metal-orgánicas (MOFs) como adsorbentes para la purificación de aceite de girasol crudo desgomado y comparar su efectividad con tres arcillas naturales. El aceite fué tratado adicionando dos cantidades diferentes (0,05% y 0,3%, p/p) y dos tiempos de de tratamiento (0,5 h y 3,0 h) a temperatura constante (25 °C). Los resultados indicaron que todos los tratamientos con adsorbentes mejoraron las propiedades físico-químicas del aceite. Más importante aún, los valores de acidez libre, peróxidos y p-anisidina se redujeron significativamente con Ti-MOF y γ-CD-MOF en comparación con la muestra de control. Los aceites mostraron no haberse contaminado con los metales durante los tratamientos de MOFs. No hubo cambios significativos en las composiciones de ácidos grasos y esteroles de los aceites tratados, mientras que los contenidos de α-tocoferol disminuyeron a cierto nivel. En consecuencia, este estudio demostró la posibilidad de que los MOFs sean adsorbentes para la purificación de aceites crudos, y demostró el gran potencial de Ti-MOF y γ-CD-MOF como adsorbentes.

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