Microencapsulation of Flaxseed Oil by Spray Drying: Effect of Oil Load and Type of Wall Material

Autor(es)

Tonon, Renata V. ^{[1, 2]} ; Pedro, Ranie B. ^[2] ; Grosso, Carlos R. F. ^[3] ; Hubinger, Miriam D. ^[2]

Afiliação do(s) autor(es)

^[1] Embrapa Food Technol, BR-23020470 Rio De Janeiro, RJ - Brazil

^[2] Univ Estadual Campinas, Fac Food Engn, Dept Food Engn, Campinas, SP - Brazil

^[3] Univ Estadual Campinas, Fac Food Engn, Dept Food & Nutr, Campinas, SP - Brazil

• Tipo de documento: Artigo Científico
• Fonte: Drying Technology; v. 30, n. 13, p. 1491-1501, 2012.
• Citações Web of Science: 57

Resumo

The objective of this work was to evaluate the effect of the type of wall material and the oil load on the microencapsulation of flaxseed oil by spray drying. Gum arabic, whey protein concentrate, and a modified starch were used to produce the microcapsules, each with four oil concentrations (10, 20, 30, and 40% oil, w/w, with respect to total solids), for a total of 12 tests. Initially, the feed emulsions were characterized for stability, viscosity, and droplet size. Then they were dried in a laboratory-scale spray dryer and the resulting particles were analyzed for encapsulation efficiency, lipid oxidation, moisture content, and bulk density. The increase in oil concentration led to the production of emulsions with larger droplets and lower viscosity, which directly affected powder properties, resulting in lower encapsulation efficiency and higher lipid oxidation. Among the three wall materials evaluated, the modified starch showed the best performance, with the highest encapsulation efficiency and lowest peroxide values. (AU)

• 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
• Processo FAPESP: 09/52014-0 - Avaliação da influência do material de parede, do tamanho das gotas da emulsão e do tamanho das partículas na microencapsulação do óleo de linhaça por spray drying
• Beneficiário: Renata Valeriano Tonon
• Modalidade de apoio: Bolsas no Brasil - Pós-Doutorado