Immobilized Staphylococcus xylosus lipase-catalysed synthesis of ricinoleic acid esters

Horchani, Habib; Bouaziz, Ahlem; Gargouri, Youssef; Sayari, Adel

doi:10.1016/j.molcatb.2011.11.007

Cited by 28 publications

(14 citation statements)

References 25 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…3. Lower molecular weight estolides were previously reported for ricinoleic acid as substrate when the immobilized lipase from Staphylococcus xylosus has been used [23].…”

Section: Synthesis Of Estolides By Immobilized Lipasesmentioning

confidence: 99%

Selectivity of lipases for estolides synthesis

Todea

Frissen

Otten

et al. 2014

Pure and Applied Chemistry

View full text Add to dashboard Cite

Lipase-catalyzed synthesis of estolides starting from different saturated (C16 16OH, C18 12OH) and unsaturated (C18:1 9 cis 12-OH) hydroxy-fatty acids was investigated. For this reason, the catalytic efficiency of several native and immobilized lipases in different organic reaction media at temperatures up to 75 °C was studied. The formation of mono-and di-lactone as well as estolide's chain elongation depends on the type and source of lipase. The lipase from Pseudomonas stutzeri immobilized by cross-linking as cross-linked enzymes aggregates (CLEAs) was the best biocatalyst in terms of chain elongation. Estolides with polymerization degree up to 10 were obtained at substrate conversions higher than 80 %.

show abstract

“…3. Lower molecular weight estolides were previously reported for ricinoleic acid as substrate when the immobilized lipase from Staphylococcus xylosus has been used [23].…”

Section: Synthesis Of Estolides By Immobilized Lipasesmentioning

confidence: 99%

Selectivity of lipases for estolides synthesis

Todea

Frissen

Otten

et al. 2014

Pure and Applied Chemistry

View full text Add to dashboard Cite

show abstract

“…当酶量进一步增加时, 将引起体系粘度的增加, 导致初始反应速率降低 [26] , 另外酶量大量增加时, 酶的活性位点不能暴露出来与反应底物结合, 以及大量的酶分子聚集在一起而影响催化效果 [27] . 反应时间也影响产率, 从图 1 中看出, 反应产率随着时间增加而增加, 当反应 21 h 后, 产率基本达到平衡, 不再随时间发生明显的变化.…”

Section: 强的抑制活性unclassified

Synthesis of Novel Fatty Amide Analogues of Troxerutin Catalyzed by Lipase in Organic Medium

王宏雁¹,

杨亮茹²,

肖咏梅³

et al. 2014

Chin. J. Org. Chem.

View full text Add to dashboard Cite

In nonaqueous medium, a series of troxerutin amidation analogues were synthesized by the reaction of vinyl-troxerutin esters with fatty amines. The influence parameters including enzyme source, the amount of the enzyme, reactive medium, water content of solvents and reaction time were investigated. The results showed that the amidation occurred regioselectively at vinyl-ester bond. Using pyridine as solvent (water content ＜1%), the amidation reaction catalyzed by lipase LS-10 (20 mg/mL) reached plateau after 21 h at 50 ℃.

show abstract

“…Ricinolic acid has both -OH group and -COOH group in its structure. Candida antarctica which is positionally a non-specific lipase also catalyzed intermolecular esterification of -OH group of ricinoleic acid and its -COOH group resulting in the synthesis of ricinoleic acid estolide along with the product isopropyl ricinoleate 14 .…”

Section: Ft-irmentioning

confidence: 99%