DOI QR코드

DOI QR Code

Optimization of 1(3)-Palmitoyl-2-Oleoyl-3(1)-Stearoyl Glycerol Produced via Lipase-catalyzed Esterification Using the Response Surface Methodology

Camellia Oil로부터 1(3)-Palmitoyl-2-Oleoyl-3(1)-Stearoyl Glycerol을 함유한 효소적 합성반응물의 최적화 연구

  • Received : 2011.03.17
  • Accepted : 2011.08.19
  • Published : 2011.10.30

Abstract

1(3)-palmitoyl-2-oleoyl-3(1)-stearoyl-(POS)-glycerol-enriched reaction products were synthesized from camellia oil, palmitic ethyl ester, and stearic ethyl ester via lipase-catalyzed interesterification. Response surface methodology (RSM) was employed to optimize the production of the POS-enriched reaction product (Y1, %) and the stearicand palmitic-acid contents at the sn-2 position due to acyl migration (Y2, %). The reaction factors were the enzyme amount (X1, 2-6%), reaction time (X2, 60-360 min), and substrate molar ratio of camellia oil to palmitic ethyl ester and stearic ethyl ester (X3, 1-3 mol). The predictive models for Y1 and Y2 were adequate and reproducible as no lack of fit was signified (0.128 and 0.237) and as there were satisfactory levels of R2 (0.968 and 0.990, respectively). The optimal conditions for the reaction product for maximizing Y1 while minimizing Y2 were predicted at the reaction combination of 5.86% enzyme amount, 60 min reaction time, and 1:3 substrate molar ratio (3 moles of palmitic ethyl ester and 3 moles of stearic ethyl ester). Actual reaction was performed under the same conditions as above, and the resulting product contained 20.19% TAG-P/O/S and 12.71% saturated fatty acids at the sn-2 position.

Keywords

camellia oil;lipase-catalyzed interesterification;cocoa butter equivalent;1(3)-palmitoyl-2-oleoyl-3(1)-stearoyl (POS) glycerol;acyl migration;response surface methodology

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