title: Low-pressure lipase-catalyzed production of mono- and diglycerides with and without N-butane and AOT surfactant.
abstract: The aim of this work is to report the production of mono- and diglycerides from olive oil at ambient condition and in pressurized n-butane as solvent medium. For this purpose, a commercial immobilized lipase (Novozym 435) was employed as catalyst and sodium (bis-2-ethyl-hexyl) sulfosuccinate (Aerosol-OT or AOT) as surfactant. The experiments were conducted in batch mode varying the temperature, pressure, and AOT concentration. Results showed that lipase-catalyzed glycerolysis either with compressed n-butane or in solvent-free system with AOT as surfactant might be a potential alternative route to conventional methods, as high contents of reaction products, especially monoglycerides ( approximately 60 wt.%), were achieved at mild temperature and pressure with a relatively low solvent to substrates mass ratio (4:1) in short reaction times (2 h).
authors.affiliation: Department of Food Engineering, URI-Campus de Erechim, Av. Sete de Setembro, 1621, Erechim, RS, 99700-000, Brazil.
authors.forename: Alexsandra
authors.initials: A
authors.lastname: Valério
authors.forename: Karina G
authors.initials: KG
authors.lastname: Fiametti
authors.forename: Suzimara
authors.initials: S
authors.lastname: Rovani
authors.forename: Helen
authors.initials: H
authors.lastname: Treichel
authors.forename: Débora
authors.initials: D
authors.lastname: de Oliveira
authors.forename: J Vladimir
authors.initials: JV
authors.lastname: Oliveira
mesh_terms: D055162:Biocatalysis / Q000187:drug effects*; D002073:Butanes / Q000494:pharmacology*; D004075:Diglycerides / Q000138:chemical synthesis*; D004143:Dioctyl Sulfosuccinic Acid / Q000494:pharmacology*; D004800:Enzymes, Immobilized; D005656:Fungal Proteins; D008049:Lipase / Q000378:metabolism*; D050178:Monoglycerides / Q000138:chemical synthesis*; D011312:Pressure; D013501:Surface-Active Agents / Q000494:pharmacology*; D013696:Temperature
chemical_list: D002073:Butanes; D004075:Diglycerides; D004800:Enzymes, Immobilized; D005656:Fungal Proteins; D050178:Monoglycerides; D013501:Surface-Active Agents; D004143:Dioctyl Sulfosuccinic Acid; C046888:butane; C093667:Novozyme 435; D008049:Lipase