Synthesis of hexyl butyrate (apple and citrus aroma) by Candida rugosa lipase immobilized on Diaion HP-20 using the Box-Behnken design

Marta Maria Oliveira Dos Santos; Luiz Henrique Sales de Menezes; Eliézer Luz do Espirito Santo; Marise Silva de Carvalho; Márcia Soares Gonçalves; Iasnaia Maria de Carvalho Tavares; Adriano Aguiar Mendes; Héctor A Ruiz; Luiz Carlos Salay; Marcelo Franco; Julieta Rangel de Oliveira

doi:10.1007/s10068-022-01200-1

Synthesis of hexyl butyrate (apple and citrus aroma) by Candida rugosa lipase immobilized on Diaion HP-20 using the Box-Behnken design

Food Sci Biotechnol. 2022 Nov 30;32(5):689-696. doi: 10.1007/s10068-022-01200-1. eCollection 2023 Apr.

Affiliations

¹ Department of Exact Sciences and Natural, State University of Southwest Bahia, Itapetinga, 45700-000 Brazil.
² Department of Exact Sciences and Technology, State University of Santa Cruz, Ilhéus, 45654-370 Brazil.
³ Institute of Chemistry, Federal University of Alfenas, Alfenas, 37130-001 Brazil.
⁴ Biorefinery Group, Food Research Department, School of Chemistry, Autonomous University of Coahuila, 25280 Saltillo, COAH Mexico.

Abstract

This study aims at the synthesis of hexyl butyrate by Candida rugosa lipase (CRL) immobilized on Diaion HP 20. The lipase load used was 28.7 ± 2.1 mg/g (mg of lipase/g of support), whose hydrolytic activity was 132.0 ± 2.5 U/g. To obtain the maximum production of hexyl butyrate, the Box-Behnken design statistical planning was used, having as independent variables; biocatalyst concentration, temperature and acid:alcohol molar ratio and ester conversion as a dependent variable at 60, 180 and 480 min. For 60 min, 90.8% conversion was obtained at 47.25 ºC, 1:1.4 molar ratio and 17.65% of biocatalyst; 180 min, 94.5% conversion at 59.5 ºC, 1:2 molar ratio and 15.8% biocatalyst; 480 min, 95.01% conversion at 47.0 ºC, 1:2 molar ratio and 16.9% biocatalyst. CRL-Diaion HP 20 retained 60% of its initial activity after ten cycles of reactions showing potential for industrial use. The ester produced was identified by gas chromatography analyses.

Supplementary information: The online version contains supplementary material available at 10.1007/s10068-022-01200-1.

Keywords: Diaion HP-20; Enzyme; Esterification; Immobilization.

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