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• W2115336162 abstract "Abstract Background In this work two immobilized preparations of lipase ( EC 3.1.1.3) B from Candida antarctica ( CALB ) were compared as biocatalysts in the synthesis of ethyl butyrate, a short‐chain esters with fruity notes. Commercial Novozym 435 and CALB immobilized on styrene‐divinylbenzene beads ( MCI‐CALB ) were tested for esterification reactions. Central composite design and response surface methodology were used to optimize the reaction temperature, substrate molar ratio, enzyme content, and the added water. Results The two enzymatic preparations presented different optimal conditions concerning ethyl butyrate production, with higher yields of conversion around 85% in 1.5 h being achieved. However, MCI‐CALB presented productivities 1.6 times higher than Novozym 435. The main difference between the biocatalysts was in relation to operational stability during batch reuse experiments, in which MCI‐CALB retained 80% of its initial activity after eight batches, while Novozym 435 retained only 20% under the same conditions. Conclusion It was verified that variations in the protocols for enzyme immobilization causes different optimal conditions for the esterification reaction. These are very interesting results because reaction times were short, producing high conversion yields and productivities considering the mass of biocatalyst used. © 2012 Society of Chemical Industry" @default.
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• W2115336162 date "2012-10-15" @default.
• W2115336162 modified "2023-10-18" @default.
• W2115336162 title "Effect of immobilization protocol on optimal conditions of ethyl butyrate synthesis catalyzed by lipase B from<i>Candida antarctica</i>" @default.
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• W2115336162 doi "https://doi.org/10.1002/jctb.3945" @default.
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