Please use this identifier to cite or link to this item: http://localhost:8080/xmlui/handle/123456789/4032
Title: Integrated Bioprocess for Structured Lipids, Emulsifiers and Biodiesel Production Using Crude Acidic Olive Pomace Oils
Authors: Heinzl, G C
Mota, D A
Martinis, V
Martins, A S
Soares, C M F
Osorio, N
Gominho, J
Nampoothiri, K M
Sukumaran, R K
Pereira, H
Ferreira-Dias, S
Keywords: biodiesel
lipase
monoacylglycerols
olive pomace oil
structured lipids
Issue Date: Feb-2022
Publisher: Elsevier
Citation: Bioresource Technology; 346:126646
Abstract: Olive pomace oil (OPO), a by-product of olive oil industry, is directly consumed after refining. The novelty of this study consists of the direct use of crude high acidic OPO (3.4-20% acidity) to produce added-value compounds, using sn-1,3-regioselective lipases: (i) low-calorie dietetic structured lipids (SL) containing caprylic (C8:0) or capric (C10:0) acids by acidolysis or interesterification with their ethyl esters, (ii) fatty acid methyl esters (FAME) for biodiesel, and (iii) sn-2 monoacylglycerols (emulsifiers), as by-product of FAME production by methanolysis. Immobilized Rhizomucor miehei lipase showed similar activity in acidolysis and interesterification for SL production (yields: 47.8-53.4%, 7 h, 50℃) and was not affected by OPO acidity. Batch operational stability decreased with OPO acidity, but it was at least three-fold in interesterification that in acidolysis. Complete conversion of OPO into FAME and sn-2 monoacylglycerols was observed after 3 h-transesterification (glycerol stepwise addition) and lipase deactivation was negligeable after 11 cycles.
URI: https://doi.org/10.1016/j.biortech.2021.126646
http://hdl.handle.net/123456789/4032
Appears in Collections:2022

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