A carregar...
Publicação
Continuous production of dietetic structured lipids using crude acidic Olive pomace oils
| Nome: | Descrição: | Tamanho: | Formato: | |
|---|---|---|---|---|
| 1.54 MB | Adobe PDF |
Orientador(es)
Resumo(s)
Crude olive pomace oil (OPO) is a by-product of olive oil extraction. In this study, lowcalorie
structured triacylglycerols (TAGs) were produced by acidolysis of crude OPO with mediumchain
fatty acids (caprylic, C8:0; capric, C10:0) or interesterification with their ethyl ester forms
(C8EE, C10EE). These new TAGs present long-chain fatty acids (L) at position sn-2 and medium-chain
fatty acids (M) at positions sn-1,3 (MLM). Crude OPO exhibited a high acidity (12.05–28.75% free
fatty acids), and high contents of chlorophylls and oxidation products. Reactions were carried out
continuously in a packed-bed bioreactor for 70 h, using sn-1,3 regioselective commercial immobilized
lipases (Thermomyces lanuginosus lipase, Lipozyme TL IM; and Rhizomucor miehei lipase, Lipozyme
RM IM), in solvent-free media at 40 C. Lipozyme RM IM presented a higher affinity for C10:0 and
C10EE. Lipozyme TL IM preferred C10:0 over C8:0 but C8EE over C10EE. Both biocatalysts showed
a high activity and operational stability and were not affected by OPO acidity. The New TAG yields
ranged 30–60 and the specific productivity ranged 0.96–1.87 g NewTAG/h.g biocatalyst. Lipozyme
RM IM cost is more than seven-fold the Lipozyme TL IM cost. Therefore, using Lipozyme TL IM and
crude acidic OPO in a continuous bioreactor will contribute to process sustainability for structured
lipid production by lowering the cost of the biocatalyst and avoiding oil refining
Descrição
Palavras-chave
acidolysis biocatalysis continuous bioreactor dietetic lipid interesterification lipase low-calorie fat olive pomace oil structured lipids structured triacylglycerols
Contexto Educativo
Citação
Souza-Gonçalves, J.; Fialho, A.; Soares, C.M.F.; Osório, N.M.; Ferreira-Dias, S. Continuous production of dietetic structured lipids using crude acidic Olive pomace oils. Molecules 2023, 28, 2637
Editora
MDPI