Otimização das condições de produção de ésteres etílicos a partir de óleo de peixe com elevado teor de ácidos graxos ômega-3

AUTOR(ES)

Moura, Juliana Maria Leite Nóbrega de, Gonçalves, Lireny Aparecida Guaraldo, Grimaldi, Renato, Soares, Marinalda da Silva, Ribeiro, Ana Paula Badan

FONTE

Química Nova

DATA DE PUBLICAÇÃO

2006-10

RESUMO

The production of ethyl esters by alcoholysis is an alternative for splitting triacylglycerols due to the possibility of using low temperatures, which results in oxidative protection of the polyunsaturated fatty acids. Ethyl esters produced under mild conditions of temperature could be used as substrate for obtaining structured lipids. The reaction parameters of production of ethyl esters from fish oil with high content of omega-3 fatty acids by alcoholysis were optimized using response surface methodology. An experimental design (2³) (with levels +1 and -1, six axial points with levels -alpha and +alpha and three central points) was applied. The variables investigated were concentration of catalyst, amount of ethyl alcohol and temperature. Ethyl ester conversion was monitored by high performance size exclusion chromatography (HPSEC) and the best result obtained was 95% conversion rate. The optimal conditions were 40 °C, 1% of NaOH and 36% of ethanol.

Documentos Relacionados

• Teores de ácidos graxos em ovos comerciais convencionais e modificados com ômega-3
• Ácidos graxos ômega-3 reduzem o desenvolvimento de lesões pré-neoplásicas
• Avaliação do teor de ácidos graxos ômega-3 e atividade antioxidante em folhas de trigo (Triticum aestivum L.)
• Ácidos graxos poliinsaturados ômega-3 e ômega-6: importância e ocorrência em alimentos
• Produção de ésteres etílicos de ácidos graxos utilizando uma lipase não comercial em propano pressurizado