Interesterification of Olive Oil with Palmitic Acid Catalyzed by Rhizopus delemar Lipase in W/0 Microemulsions

摘要

The interesterification of olive oil with palmitic acid catalyzed by Rhizopus delemar lipase was investigated in sodium bis(2-ethylhexyl) sulfosuccinate (AOT) microemulsions.The maximal reaction rate was obtained at a buffer pH of 5.0-6.5.The reaction rate also attained a maximum at a W (=[H_2O]/[AOT]) value of 2-5 and a palmitic acid concentration of 125 mM.The molar percentage of the interesterified product l,3-dipalmitoyI-3-oleoyl glycerol (POP) in the olive oil was markedly enriched from 2.8 to 22.7 mol% after 24 h of the reaction.