Results 181 to 190 of about 1,684 (196)
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Glycerolysis of linseed oil: A compositional study
Journal of the American Oil Chemists' Society, 1969AbstractSodium hydroxide catalyzed glycerolysis of linseed oil is greatly enhanced by increase in temperature but only moderately by increase in catalyst concentration. That the active catalyst under these conditions is the glyceroxide ion and not the hydroxide ion was confirmed by performing the reaction with freshly prepared sodium glyceroxide.
A. E. Rheineck +2 more
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Production of diacylglycerols through low-temperature chemical glycerolysis
Food Chemistry, 2010Abstract The aim of this study was to produce diacylglycerols (DAG) by chemical glycerolysis of soybean oil at low temperatures. Solvents and low-frequency ultrasonic irradiation were introduced to enhance the reaction. Three operation modes, namely mechanical stirring, magnetic stirring and ultrasonic irradiation, were compared.
Zhong, Nanjing +5 more
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High‐yield enzymatic glycerolysis of fats and oils
Journal of the American Oil Chemists' Society, 1991Several triglyceride fats and oils were reacted with glycerol using lipase as catalyst. A batch system with magnetic stirring was used without the addition of any solvents or emulsifiers. In all cases a mixture of mono‐, di‐ and triglycerides was obtained.
Gerald P. McNeill +2 more
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Enzymatic Glycerolysis of Palm and Palm Kernel Oils
Chemical Engineering Communications, 2005Abstract Glycerolysis of palm and palm kernel oils were carried out using commercial lipases from Candida antarctica (Novozym 435) and Mucor miehei (Novozym 388) as catalyst (500 units lipase/g oil) at 40°C and with an oil:glycerol molar ratio of 1:2 in a solvent-free system.
Melek Tu¨ter, H. AyŞe Aksoy
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Applied Biochemistry and Biotechnology, 2009
Distilled glycerides are obtained through distillation of the system mono-diglycerides which is produced from the esterification reaction between a triglyceride with glycerol. In this work, monoglycerides (MG) and diglycerides (DG) are produced through lipase-catalyzed glycerolysis of soybean oil using Candida antarctica B in a solvent-free system.
Patricia Bogalhos Lucente, Fregolente +3 more
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Distilled glycerides are obtained through distillation of the system mono-diglycerides which is produced from the esterification reaction between a triglyceride with glycerol. In this work, monoglycerides (MG) and diglycerides (DG) are produced through lipase-catalyzed glycerolysis of soybean oil using Candida antarctica B in a solvent-free system.
Patricia Bogalhos Lucente, Fregolente +3 more
openaire +2 more sources
Biotechnology Letters, 1999
Palm and palm kernel oils were reacted with glycerol using a 1,3-positional specific commercial lipase from Rhizopus delemar, Lipase D ‘Amano’ 100 (40 °C, 500 Units lipase/g oil) in the absence of solvent. After 24 h, partial acylglycerols contents of the glycerolysis products of palm and palm kernel oils were 66% (w/w) and 64% (w/w), respectively. The
Melek Tüter +4 more
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Palm and palm kernel oils were reacted with glycerol using a 1,3-positional specific commercial lipase from Rhizopus delemar, Lipase D ‘Amano’ 100 (40 °C, 500 Units lipase/g oil) in the absence of solvent. After 24 h, partial acylglycerols contents of the glycerolysis products of palm and palm kernel oils were 66% (w/w) and 64% (w/w), respectively. The
Melek Tüter +4 more
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Solvent engineering applied to lipase‐catalyzed glycerolysis of triolein
Journal of the American Oil Chemists' Society, 2001AbstractSolvent engineering was applied to lipase‐catalyzed glycerolysis of triolein for the selective synthesis of monoolein and diolein. The effect of different binary mixtures of n‐hexane and 2‐methyl‐2‐butanol (2M2B) on the selective production of mono‐ or diacylglyceride was established.
X. Rendón +2 more
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Kinetic modeling of lipase-catalyzed glycerolysis of olive oil
Biochemical Engineering Journal, 2011Abstract This work reports experimental data and the kinetic modeling of monoacylglycerols (MAG) and diacylglycerols (DAG) production from olive oil using a commercial immobilized lipase (Novozym 435) and tert-butanol as solvent. The kinetic modeling presented is based on the ordered-sequential Bi Bi mechanism considering glycerolysis and hydrolysis ...
Fernando Voll +6 more
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Low‐temperature chemical glycerolysis to produce diacylglycerols by heterogeneous base catalyst
European Journal of Lipid Science and Technology, 2014The present study aimed to develop a heterogeneous catalysis process for diacylglycerols (DAG) production through low‐temperature chemical glycerolysis. Of the heterogeneous catalysts evaluated, MgO‐supported KOH (KOH–MgO) was found effective for the low‐temperature chemical glycerolysis, and the KOH–MgO was characterized by FT‐IR and powder XRD ...
Nanjing Zhong +5 more
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Biotechnology Letters, 2000
Glycerolysis of palm and palm kernel oils were conducted using a commercial 1,3-specific lipase from Humicola lanuginosa (trade name: SP 398) as catalyst (500 units lipase g−1 oil) at 40 °C and oil:glycerol (1:2 mol mol−1) in a solvent-free system. After 24 h, the glycerolysis products of palm and palm kernel oils consisted of 23% triacylglycerols, 18%
Melek Tüter, H. Ayşe Aksoy
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Glycerolysis of palm and palm kernel oils were conducted using a commercial 1,3-specific lipase from Humicola lanuginosa (trade name: SP 398) as catalyst (500 units lipase g−1 oil) at 40 °C and oil:glycerol (1:2 mol mol−1) in a solvent-free system. After 24 h, the glycerolysis products of palm and palm kernel oils consisted of 23% triacylglycerols, 18%
Melek Tüter, H. Ayşe Aksoy
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