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Tüter, Melek; Babalı, Banu; Köse, Öznur; Dural, Şenay; Aksoy, H. A.

doi:10.1023/a:1005464021613

Cited by 15 publications

(2 citation statements)

References 5 publications

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“…The significant effect of the glycerol-to-oil molar ratio on the MG synthesis can be explained by considering that alcohol in excess is needed to favor the MG accumulation in the reaction medium, instead of diglycerides or triglycerides [13]. In the present work, the highest level of glycerol corresponded to the best condition to lipase-catalyzed MG production.…”

Section: And Indicated Thatmentioning

confidence: 50%

“…The system was considered to be stable for 30 days. In another work [13] dealing with continuous glycerolysis palm oil using lipase PS immobilized on Accurel EP100 as biocatalyst, the formation of MGs was in the order of 14%. Therefore, in the present work, highly satisfactory behavior of the experimental system for the continuous synthesis of MGs was verified.…”

Section: Continuous Glycerolysis In Pbrmentioning

confidence: 99%

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Packed-Bed Reactor Running on Babassu Oil and Glycerol to Produce Monoglycerides by Enzymatic Route using Immobilized Burkholderia cepacia Lipase

Freitas

Santos

Zanin

et al. 2009

Appl Biochem Biotechnol

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The aim of this study was the glycerolysis of babassu oil catalyzed by immobilized lipase from Burkholderia cepacia, in a continuous packed-bed reactor. The best reaction conditions were previously established in batchwise via response surface methodology as a function of glycerol-to-oil molar ratio and reaction temperature. The reactor operated continuously for 22 days at 50 degrees C, and during the first 6 days, no significant decrease on the initial lipase activity was observed. Monoglycerides concentration was in the range from 25 to 33 wt.%. Subsequently, a progressive decrease in the activity was detected, and an inactivation profile described by Arrhenius model estimated values of 50 days and 1.37 x 10(-2) h(-1) the half-life and deactivation coefficient, respectively.

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Section: And Indicated Thatmentioning

confidence: 50%

Section: Continuous Glycerolysis In Pbrmentioning

confidence: 99%

Packed-Bed Reactor Running on Babassu Oil and Glycerol to Produce Monoglycerides by Enzymatic Route using Immobilized Burkholderia cepacia Lipase

Freitas

Santos

Zanin

et al. 2009

Appl Biochem Biotechnol

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Lipase catalyzed synthesis of ester‐based surfactants from biomass derivatives

Karmee

2008

Biofuels Bioprod Bioref

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Non-ionic surfactants fi nd a unique place in pharmaceutical, detergent, food, and cosmetic industries because of their ready availability from biomass, low cost, and renewability. Generally these surfactants are esters obtained from the reaction of glycerol, L-ascorbic acid, and sugar, with long or medium chain fatty acids. Problems encountered during the synthesis of these surfactants are the immiscibility of highly polar substrates in organic solvents and non-regioselective reaction. Therefore, lipases as a catalyst and t-butanol or acetone, a mixture of solvent and ionic liquid as solvents, have been used for the synthesis of ester-based surfactants. This review focuses on the uses of lipases for the synthesis of surfactants obtained from biomass derivatives viz. fats and oils, sugar and vitamin-C.

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Solvent engineering applied to lipase‐catalyzed glycerolysis of triolein

Rendón¹,

López-Munguı́a²,

Castillo³

2001

J Americ Oil Chem Soc

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Solvent 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. Conditions for high selectivity toward monoolein synthesis were enhanced from 10.6 mol% in pure n-hexane to 64 mol% in 2M2B. On the contrary, the highest production of diolein, corresponding to 62 mol%, was achieved in n-hexane. Concerning triolein conversion, the best results were obtained in 100% 2M2B, with a conversion of 75%. The effect of the n-hexane/2M2B ratio on diolein regioisomer production during triolein glycerolysis was also evaluated. Two different profiles of diolein regioisomers were observed as a function of solvent composition: Although the production of the 1,2-diolein isomer was favored as the proportion of 2M2B in n-hexane was increased, the 1,3-isomer was preferentially synthesized in reactions where n-hexane was the predominant solvent. When 100% n-hexane was used as a solvent, 1,3-diolein comprised 72 mol% of the total diolein population (58 mM). On the contrary, when the reaction was carried out in 100% 2M2B, the total concentration of diolein was lower (21 mM) but the 1,2-diolein regioisomer was preferentially formed (89%). These results were explained as a consequence of the different extents of hydrolysis-synthesis reactions involved in the glycerolysis process, which are strongly dependent on solvent mixtures and water concentration. Finally, some advantages of the use of binary mixtures of solvents compared with other strategies applied to glycerolysis reactions are discussed.

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Untitled

Cited by 15 publications

References 5 publications

Packed-Bed Reactor Running on Babassu Oil and Glycerol to Produce Monoglycerides by Enzymatic Route using Immobilized Burkholderia cepacia Lipase

Packed-Bed Reactor Running on Babassu Oil and Glycerol to Produce Monoglycerides by Enzymatic Route using Immobilized Burkholderia cepacia Lipase

Lipase catalyzed synthesis of ester‐based surfactants from biomass derivatives

Solvent engineering applied to lipase‐catalyzed glycerolysis of triolein

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