Lipase‐catalyzed alcoholysis with supercritical carbon dioxide extraction 2: Phase behavior

Abstract

a 9 'DeF)a rlment {}r F{I(}c] Tec hn{~l{}gy, I. und L In ivers il y, 22 ] (}{1 Lu n(l, Sweden, and "~)Ch~,m ica [ E c~}loRy a nd Ecoloxic~}logy, Department oJ EcoloR'/. Lurid LInivt:ersilyr 223 62 I uncl, Sw(!der} ABSTRACT: The phase behavior el syslems contaiu[ng ethanol plus lipid samples witl~ dirTerent lipid compositions plus carben dk~xide was studied visually at 4{}'C anti pressures o1: O.01, !}, 1.5, and 23 Mt'a by means el' a high-pressure S:]l}phire cell. The systems studied represent Ihe main c()mponents [}resent h7 a [ipase<atalyzed alc:oholysis react[oB of r,:,,)d liver oil in supercrifi{'(fl carb(}n dioxide. Two phases, a vapor and a liquid phase, were ol}s{Prved in all sy-s{ems studied ~]t stlp~:~rcritic/-.ll condi[ions, f/~C}(75 74, 1491-],194 t1997J.

Production of omega-3 polyunsaturated fatty acid concentrates: A review

“…In last years, several studies have been published by Gunnlaugsdottir and Sivik (1995) about the influence of experimental conditions, as pressure or solvent flow rate on the ethanolysis of cod liver oil with an immobilized lipase (Novozym 435). The same authors have also studied the phase behaviour of the reaction mixture in SC-CO 2 (Gunnlaugsdottir, Karlsson, & Sivik, 1997) and a coupled process with supercritical fluid extraction and enzymatic ethanolysis to produce omega-3 ethyl esters from cod liver oil in a continuous way (Gunnlaugsdottir, Järemo, & Sivik, 1998).…”

Fatty acids, fatty acid analogues and their derivatives

“…491 Lipase-catalyzed alcoholysis of cod liver oil was carried out under supercritical carbon dioxide condition. 492 Efficient aqueous enzymatic (cellulase, polygalacturonase, protease or -amylase) extraction of fresh grated coconut meat gave over 70% yield of oil. 493 Aqueous enzymatic extraction of mustard seed and rice bran produced oils which were better with respect to colour and odour than commercial expeller-extracted or Soxhlet-extracted oils.…”

Lipase‐catalyzed alcoholysis with supercritical carbon dioxide extraction 1: Influence of flow rate

“…A rotary evaporator was used to remove the solvent, and the amount of residue was determined gravimetrically. The residue obtained was used in subsequent phasebehavior experiments (14). During the experiment some ethanol (EtOH) was extracted and collected along with the reaction components in the cold traps [numbers 13 and 15].…”

“…These reaction conditions were therefore adopted for this work. Further, a separate study has established that the reaction system comprises three phases, i.e., a vapor and liquid phase in addition to the solid phase containing the immobilized enzyme (14).…”