Detection of coconut oil adulteration with palm oil through NMR spectroscopic method

M.R.  Gokul Raj; M.  Priya Rani; K.B. Rameshkumar

doi:10.3989/gya.0861231.2012

Autores/as

M.R. Gokul Raj Phytochemistry and Phytopharmacology Division, KSCSTE - Jawaharlal Nehru Tropical Botanic Garden and Research Institute (KSCSTE-JNTBGRI) - - Laboratory for Advanced Materials, Faculty of Natural Sciences, Comenius University in Bratislava https://orcid.org/0000-0002-7593-8728
M. Priya Rani Phytochemistry and Phytopharmacology Division, KSCSTE - Jawaharlal Nehru Tropical Botanic Garden and Research Institute (KSCSTE-JNTBGRI) - Drug Discovery and Development Division, Patanjali Research Foundation https://orcid.org/0000-0003-4561-3217
K.B. Rameshkumar Phytochemistry and Phytopharmacology Division, KSCSTE - Jawaharlal Nehru Tropical Botanic Garden and Research Institute (KSCSTE-JNTBGRI) https://orcid.org/0000-0002-9022-7406

DOI:

https://doi.org/10.3989/gya.0861231.2012

Palabras clave:

Aceite de coco, Aceite de palma, Adulteración, RMN

Resumen

El aceite de coco es un producto costoso en los sectores alimentario y de medicina tradicional y su adulteración con un sustituto barato como el aceite de palma es un problema grave. El presente estudio evalúa la aplicación de la espectroscopía de RMN ¹H para autenticar el aceite de coco y monitorear su adulteración con el sustituto barato de aceite de palma. Diversos parámetros como longitud media de cadena (14,25), índice de saponificación (244,66 mg KOH/100 g), peso molecular (652,12), índice de yodo (8,27 mg/100 g), índice de peróxido (0,02 meqO₂/kg) y porcentaje de insaturación (7,81%), se calcularon mediante la técnica de RMN y se encontró que coincidían con los valores obtenidos en pruebas de laboratorio. El alcance de la adulteración con aceite de palma se puede detectar mediante RMN evaluando los valores de desplazamiento químico de los protones olefínicos. El hallazgo tiene un impacto significativo, tanto en el sector alimentario, como en el de la medicina tradicional, ya que la espectroscopia de RMN puede reemplazar los métodos convencionales de laboratorio, como un método fiable y preciso para el análisis.

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