Spray drying of mono- and double-layer emulsions of PUFA-rich vegetable oil homogenized by ultrasound

Autor(es)

Velez-Erazo, Eliana Marcela ^[1] ; Consoli, Larissa ^{[1, 2]} ; Hubinger, Miriam Dupas ^[1]

Afiliação do(s) autor(es)

^[1] Univ Estadual Campinas, Sch Food Engn, Dept Food Engn, Campinas - Brazil

^[2] Ctr Univ UNIFAFIBE, Bebedouro - Brazil

• Tipo de documento: Artigo Científico
• Fonte: Drying Technology; v. 39, n. 7, p. 868-881, MAY 3 2021.
• Citações Web of Science: 11

Resumo

The aim of this work was to encapsulate PUFA-rich oil by ultrasound emulsification followed by spray drying. mono- and double-layer emulsions stabilized by either whey protein concentrate (WPC) or WPC-pectin were obtained using an ultrasound probe. Maltodextrin and modified starch (HC) blends were used as wall materials. Four of the eight emulsions characterized presented high kinetic stability and were then spray-dried at 150 and 180 degrees C air inlet temperature: WPC-stabilized emulsions blended with 100% HC, 50% maltodextrin and 50% HC, or 75% maltodextrin and 25% HC; WPC-pectin-stabilized emulsion blended with 100% maltodextrin. The spray-dried microparticles presented a moisture content of 0.3% to 1.23%, water activity between 0.102 and 0.224, encapsulation efficiency ranging from 30% to 93%, and particle size between 8.67 and 16.72 mu m. WPC-stabilized microparticles with 100% HC showed the highest encapsulation efficiency (89-93%) and the most efficient protection against oxidation. The use of mono-layer emulsions was sufficient to provide microparticles with the best features. Ultrasonic emulsification is an efficient technique for producing microparticles loaded with PUFA-rich oils. (AU)

• Processo FAPESP: 15/11984-7 - Produção de micropartículas contendo ativos lipossolúveis através da secagem por atomização em spray drying: influência das propriedades das emulsões nas características do produto final
• Beneficiário: Miriam Dupas Hubinger
• Modalidade de apoio: Auxílio à Pesquisa - Regular
• Processo FAPESP: 09/54137-1 - EMUS: aquisição de um analisador de distribuição de tamanho de partículas, um medidor de potencial zeta, um spray dryer e um sistema de cromatografia líquida de ultra alta pressão / espectrômetro de massa
• Beneficiário: Miriam Dupas Hubinger
• Modalidade de apoio: Auxílio à Pesquisa - Programa Equipamentos Multiusuários