Incrementing MCT Character of Coconut Oil Using Enzyme Catalyzed Interesterification

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  • Kanprakobkit Winranath
    Department of Chemistry and Center of Excellence in Biomaterials, Faculty of Science, Naresuan University
  • Kielarova Somlak Wannarumon
    Department of Industrial Engineering, Faculty of Engineering, Naresuan University
  • Wichai Uthai
    Department of Chemistry and Center of Excellence in Biomaterials, Faculty of Science, Naresuan University
  • Bunyapraphatsara Nuntawan
    Department of Pharmacognosy, Faculty of Pharmacy, Mahidol University
  • Kielar Filip
    Department of Chemistry and Center of Excellence in Biomaterials, Faculty of Science, Naresuan University

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<p>The fatty acid composition of coconut oil was modified using enzyme catalyzed interesterification with the aim of obtaining a product more alike to commercial MCT oils. This modification was carried out with the aim to obtain a product with some of the health benefits shown by MCT oils. Initially, lipase B from Candida antarctica immobilized on acrylic resin and lipozyme TL IM were tested as enzyme catalysts for the reaction. The enzyme catalysts have shown similar performance and lipozyme TL IM has been chosen as the catalyst based on its lower cost. The effects of reaction time, oil to methyl octanoate ratio, and enzyme loading on the reaction performance have been investigated with response surface methodology (RSM) utilizing the Box-Behnken approach. The optimized reaction was scaled up to 20 g. The possibility to source the medium chain fatty acid esters from coconut oil fatty acid distillate using a simple procedure was demonstrated and the possibility to use these esters for the interesterification of coconut oil has been demonstrated as well.</p>

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