{"id":15048,"date":"2020-09-01T18:19:59","date_gmt":"2020-09-01T16:19:59","guid":{"rendered":"https:\/\/antecscientific.com\/oxidacion-de-lipidos\/"},"modified":"2024-10-26T20:47:51","modified_gmt":"2024-10-26T18:47:51","slug":"oxidacion-de-lipidos","status":"publish","type":"page","link":"https:\/\/antecscientific.com\/es\/aplicaciones\/reactores-roxy\/oxidacion-de-lipidos\/","title":{"rendered":"Oxidaci\u00f3n de l\u00edpidos"},"content":{"rendered":"

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Reactores ROXY para la oxidaci\u00f3n de l\u00edpidos<\/h2>\n

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Los reactores electroqu\u00edmicos ROXY se aplican para investigar la oxidaci\u00f3n de los l\u00edpidos. El mecanismo de reacci\u00f3n se basa en reacciones de peroxidaci\u00f3n inducidas por radicales. Los diamantes dopados con boro son especialmente \u00fatiles para generar radicales hidroxilo, tambi\u00e9n conocidos como las especies de ox\u00edgeno m\u00e1s reactivas (ROS). En una configuraci\u00f3n EC\/MS de flujo continuo en l\u00ednea, esto permite la oxidaci\u00f3n controlada de \u00e1cidos grasos y colesterol, seguida del an\u00e1lisis inmediato de los productos en MS.<\/p>\n

La aplicabilidad de la electroqu\u00edmica y la EM en l\u00ednea y fuera de l\u00ednea es amplia, y abarca desde el estudio de la oxidaci\u00f3n de los alimentos hasta las implicaciones de la oxidaci\u00f3n de los l\u00edpidos en la salud humana (estr\u00e9s oxidativo). Adem\u00e1s, la EC\/MS permite estudiar reacciones secundarias como el efecto de los antioxidantes en los productos alimenticios o los enlaces cruzados con sustancias no lip\u00eddicas como las prote\u00ednas o el ADN.<\/p>\n

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Ejemplo de mecanismo de oxidaci\u00f3n lip\u00eddica de
\n
\n M. <\/span>
\n Gavahian<\/span>
\n <\/span>
\n<\/a> et al.<\/em><\/p>\n

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Oxidaci\u00f3n de FAME en biocarburantes<\/h2>\n

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Otra aplicaci\u00f3n de ROXY para la investigaci\u00f3n de la oxidaci\u00f3n lip\u00eddica proced\u00eda de un \u00e1mbito de investigaci\u00f3n totalmente distinto, el de la automoci\u00f3n<\/strong>. Debido a la demanda de rendimiento de los veh\u00edculos y para reducir las emisiones, se han desarrollado nuevos inyectores de combustible m\u00e1s eficientes. Los inyectores de combustible con m\u00faltiples orificios m\u00e1s peque\u00f1os funcionan mejor que un \u00fanico orificio grande. Sin embargo, estos inyectores de nuevo tipo tienen m\u00e1s probabilidades de obstruirse por los contaminantes del combustible y los dep\u00f3sitos de coque. Este es especialmente el caso de los biocombustibles.<\/p>\n

Los \u00e9steres met\u00edlicos de \u00e1cidos grasos (FAME) son los principales componentes del biodi\u00e9sel. Durante un almacenamiento prolongado, pueden oxidarse f\u00e1cilmente. Los productos de oxidaci\u00f3n como los per\u00f3xidos, los per\u00f3xidos de hidr\u00f3geno y los pol\u00edmeros pueden provocar dep\u00f3sitos y coquizaci\u00f3n en los veh\u00edculos.<\/p>\n

La oxidaci\u00f3n electroqu\u00edmica (EC) se ha aplicado como sistema sustitutivo para monitorizar la oxidaci\u00f3n de FAME. La c\u00e9lula EC est\u00e1 acoplada a MS y ha demostrado ser una t\u00e9cnica excelente para la monitorizaci\u00f3n r\u00e1pida de las reacciones de oxidaci\u00f3n (ca. 10 min), sin pretratamiento de las muestras y sin necesidad de separaci\u00f3n cromatogr\u00e1fica.<\/p>\n

Para m\u00e1s detalles:<\/strong> consulte tambi\u00e9n nuestra p\u00e1gina sobre tecnolog\u00eda<\/a>.<\/p>\n

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Inyector de combustible con punta de boquilla limpia (L) y coquizable. Imagen de A. Montanaro, L Allocca<\/a>.
<\/em><\/p>\n

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Reactores electroqu\u00edmicos para EM y s\u00edntesis<\/h2>\n

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