Lipase-catalysed synthesis of palm oil-omega-3 structured lipids

Food Funct. 2019 Jun 19;10(6):3142-3149. doi: 10.1039/c9fo00668k.

Abstract

In this work, Candida antarctica lipase A was applied to selectively remove saturated fatty acids from palm oil to prepare palm oil acylglycerol concentrate (POAC), where palmitic acid decreased from 40.0 to 28.7% and oleic acid increased from 40.0 to 50.5% after 3 h of hydrolysis. Lipozyme RMIM from Rhizomucor miehei was then used to incorporate either alpha linolenic acid (ALA) or eicosapentaenoic acid (EPA) into the resulting POAC. Optimum omega-3 incorporation was achieved when POAC to omega-3 ratio was 6 : 3, reaction temperature was 40 °C and reaction time was 18 h. Under these conditions, the ALA content in the separated ALA incorporated structured lipid (POAC-ALA) was 27.1%, and the EPA content in the EPA incorporated structured lipids (POAC-EPA) was 30.9%. The formed structured lipids had lower levels of saturated fatty acids, and significantly lower melting points, in both cases below 8 °C. The enzymatic process developed produces new structured lipids, with lower saturated fat and higher omega-3, with potential as a healthy palm oil derived lipid ingredient.

MeSH terms

  • Biocatalysis
  • Candida / enzymology
  • Fatty Acids, Omega-3 / chemistry*
  • Fungal Proteins / chemistry*
  • Lipase / chemistry*
  • Oleic Acid / chemistry
  • Palm Oil / chemistry*
  • Palmitic Acid / chemistry
  • Rhizomucor / enzymology

Substances

  • Fatty Acids, Omega-3
  • Fungal Proteins
  • Oleic Acid
  • Palmitic Acid
  • Palm Oil
  • Lipozyme
  • Lipase