Process parameters influencing ethanolysis of cod liver oil in supercritical carbon dioxide

Gunnlaugsdóttir, Helga; Järemo, Mattias; Sivik, Björn

doi:10.1016/s0896-8446(97)00043-0

Cited by 20 publications

(12 citation statements)

References 30 publications

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“…Thus, lipase-catalyzed reactions in SCCO 2 have been carried out for such reactions as hydrolysis of tripalmitin (5) and canola oil (6); alcoholysis of cod liver oil (7) and palm kernel oil (8); glycerolysis of soybean oil (9); synthesis of oleoyloleate from oleic acid (10)(11)(12); acylation of glucose with lauric acid (13); thioesterification between oleic acid and butanethiol (14); transesterifications of milk fat with canola oil (15); tristearin with palm oil (16); palm oil with stearic acid (SA) (17); triolein with ethyl behenate and behenic acid (18,19); triolein with SA (20) and propyl acetate with geraniol (21); and randomization of fat and oils (22).…”

mentioning

confidence: 99%

Lipase‐catalyzed esterification of stearic acid with ethanol, and hydrolysis of ethyl stearate, near the critical point in supercritical carbon dioxide

Nakaya

Nakamura

Miyawaki

2002

J Americ Oil Chem Soc

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The effect of pressure on the lipase-catalyzed reaction in supercritical carbon dioxide (SCCO 2 ) was investigated for the esterification of stearic acid (SA) with ethanol and the hydrolysis of ethyl stearate (ES) near the critical point, ranging from 6 to 20 MPa in pressure and 35 to 60°C in temperature. The esterification rate of SA began to increase near the critical point and kept increasing steadily with an increase in pressure, reflecting the increase in SA solubility in SCCO 2 . The hydrolysis rate of ES showed a maximum at a pressure near the critical point. When the reaction was carried out with an initial overall ES concentration below its solubility limit in SCCO 2 , the maximum pressure shifted along the extended line of the gas-liquid equilibrium in the supercritical region in the pressure-temperature phase plane. This seems to be related to the singular behavior of some properties in SCCO 2 along this line reported in the literature. These results show the importance of pressure, as well as temperature, as a parameter to control enzyme reactions in SCCO 2 .

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confidence: 99%

Lipase‐catalyzed esterification of stearic acid with ethanol, and hydrolysis of ethyl stearate, near the critical point in supercritical carbon dioxide

Nakaya

Nakamura

Miyawaki

2002

J Americ Oil Chem Soc

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“…Gunnlaugsdottir et al 11 and Yin et al 12 also reported the increasing effect of extraction time on SFE.…”

Section: Main Effectsmentioning

confidence: 92%

Enrichment of omega3 fatty acids from Tyulka oil by supercritical CO₂ extraction

Fatemi

Salimi

Vatanara

et al. 2009

J of Chemical Tech & Biotech

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BACKGROUND: Supercritical CO 2 enrichment of omega3 essential fatty acids (FAs) from Tyulka oil, using a batch process was investigated. Fractional factorial design was applied to evaluate the effects of the five process parameters: pressure (20.26 to 25.33 MPa); temperature (40 to 50• C); packing fraction (0.5 to 0.7); modifier fraction (2 to 5%); and dynamic time (15 to 25 min), and their binary interactions on the enrichment of extracted omega3 FAs. By employing experimental design and analysis of variance, the variables were evaluated according to the significance of their effect on the yield of extracted omega3.

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“…The mild reaction conditions offered by lipases are especially favourable for processes involving the highly labile long-chain polyunsaturated fatty acids (PUFAs). Selective hydrolysis and esterification reactions with microbial lipases can be used to enrich PUFA from animal and plant lipids such as menhaden, tuna or borage oil [5][6][7]. When applied to TAGs under nonaqueous conditions DAG, MAG and fatty acid esters can be generated, while the production of FFAs and/or glycerol is suppressed.…”

Section: Introductionmentioning

confidence: 99%

Supercritical fluid assisted, integrated process for the synthesis and separation of different lipid derivatives

Weber¹,

Catchpole²,

Eltringham³

2008

J of Separation Science

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The partial synthesis of ethyl esters from corn and fish oil was carried out in a stirred tank at supercritical conditions and the products were separated from the reaction mixture using the supercritical fluid. Corn oil can be almost completely converted to ethyl esters under optimized conditions and the rate of reaction is comparable to atmospheric pressure conditions. Some concentration of polyunsaturates occurs in the partially converted glyceride fraction of fish oil, as the enzyme used, Lipozyme TL-IM, allows preferential esterification of the saturates and mono-unsaturates that are concentrated in positions 1 and 3 of the triglycerides. By judicious selection of the processing conditions, good separation of ethyl esters from the partially reacted glycerides was achieved.

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Process parameters influencing ethanolysis of cod liver oil in supercritical carbon dioxide

Cited by 20 publications

References 30 publications

Lipase‐catalyzed esterification of stearic acid with ethanol, and hydrolysis of ethyl stearate, near the critical point in supercritical carbon dioxide

Lipase‐catalyzed esterification of stearic acid with ethanol, and hydrolysis of ethyl stearate, near the critical point in supercritical carbon dioxide

Enrichment of omega3 fatty acids from Tyulka oil by supercritical CO₂ extraction

Supercritical fluid assisted, integrated process for the synthesis and separation of different lipid derivatives

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Process parameters influencing ethanolysis of cod liver oil in supercritical carbon dioxide

Cited by 20 publications

References 30 publications

Lipase‐catalyzed esterification of stearic acid with ethanol, and hydrolysis of ethyl stearate, near the critical point in supercritical carbon dioxide

Lipase‐catalyzed esterification of stearic acid with ethanol, and hydrolysis of ethyl stearate, near the critical point in supercritical carbon dioxide

Enrichment of omega3 fatty acids from Tyulka oil by supercritical CO2 extraction

Supercritical fluid assisted, integrated process for the synthesis and separation of different lipid derivatives

Contact Info

Product

Resources

About

Enrichment of omega3 fatty acids from Tyulka oil by supercritical CO₂ extraction