Production of low-calorie structured lipids from spent coffee grounds or olive pomace crude oils catalyzed by immobilized lipase in magnetic nanoparticles

[Display omitted] •Valorization of spent coffee grounds (SCG) and olive pomace (OP) crude oils.•Rhizopus oryzae lipase immobilization in magnetic nanoparticles (MNP-ROL).•MNP-ROL more efficient than Thermomyces lanuginosus lipase (Lipozyme TL IM).•High stability of MNP-ROL in acidolysis and interest...

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Published in:Bioresource technology 2020-07, Vol.307, p.123223-123223, Article 123223
Main Authors: Mota, Danyelle A., Rajan, Devi, Heinzl, Giuditta C., Osório, Natália M., Gominho, Jorge, Krause, Laiza C., Soares, Cleide M.F., Nampoothiri, K. Madhavan, Sukumaran, Rajeev K., Ferreira-Dias, Suzana
Format: Article
Language:English
Subjects:
Catalysis
Coffee
Enzymes, Immobilized
Esterification
Lipase
Lipids
Magnetic nanoparticles
Magnetite Nanoparticles
Olive Oil
Olive pomace oil
Petroleum
Spent coffee grounds oil
Structured lipids
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Summary:[Display omitted] •Valorization of spent coffee grounds (SCG) and olive pomace (OP) crude oils.•Rhizopus oryzae lipase immobilization in magnetic nanoparticles (MNP-ROL).•MNP-ROL more efficient than Thermomyces lanuginosus lipase (Lipozyme TL IM).•High stability of MNP-ROL in acidolysis and interesterification of OP oil. In this study, crude oils extracted from spent coffee grounds (SCG) and olive pomace (OP) were used as raw-material to synthesize low-calorie triacylglycerols, either by acidolysis with capric acid, or by interesterification with ethyl caprate, in solvent-free media, catalyzed by sn-1,3 regioselective lipases. The Rhizopus oryzae lipase (ROL) was immobilized in magnetite nanoparticles (MNP–ROL) and tested as novel biocatalyst. MNP-ROL performance was compared with that of the commercial immobilized Thermomyces lanuginosus lipase (Lipozyme TL IM). For both oils, Lipozyme TL IM preferred interesterification over acidolysis. MNP-ROL catalyzed reactions were faster and acidolysis was preferred with yields of c.a. 50% new triacylglycerols after 3 h acidolysis of OP or SCG oils. MNP-ROL was very stable following the Sadana deactivation model with half-lives of 163 h and 220 h when reused in batch acidolysis and interesterification of OP oil, respectively.
ISSN:0960-8524
1873-2976
DOI:10.1016/j.biortech.2020.123223