Spray-Air Contact in Tall and Short-Type Spray Dryers Affects Important Physicochemical Properties of Microencapsulated Chia Seed Oil
María Gabriela Bordón,
Noelia P. X. Alasino,
Maria Victoria Defaín Tesoriero,
Nahuel Camacho,
Maria C. Penci,
Marcela L. Martínez,
Pablo D. Ribotta
Affiliations
María Gabriela Bordón
Instituto de Ciencia y Tecnología de los Alimentos, Facultad de Ciencias Exactas, Físicas y Naturales (ICTA-FCEFyN)–Universidad Nacional de Córdoba (UNC), 5000 Córdoba, Argentina
Noelia P. X. Alasino
Departamento de Química Industrial y Aplicada (FCEFyN–UNC), 5000 Córdoba, Argentina
Maria Victoria Defaín Tesoriero
Grupo de Sistemas de Liberación Controlada, Centro de Química, Instituto Nacional de Tecnología Industrial (INTI), B6000XAL Buenos Aires, Argentina
Nahuel Camacho
Unidad de Investigación y Desarrollo en Tecnología Farmacéutica (UNITEFA, CONICET-UNC), 5000 Córdoba, Argentina
Maria C. Penci
Instituto de Ciencia y Tecnología de los Alimentos, Facultad de Ciencias Exactas, Físicas y Naturales (ICTA-FCEFyN)–Universidad Nacional de Córdoba (UNC), 5000 Córdoba, Argentina
Marcela L. Martínez
Instituto de Ciencia y Tecnología de los Alimentos, Facultad de Ciencias Exactas, Físicas y Naturales (ICTA-FCEFyN)–Universidad Nacional de Córdoba (UNC), 5000 Córdoba, Argentina
Pablo D. Ribotta
Instituto de Ciencia y Tecnología de los Alimentos, Facultad de Ciencias Exactas, Físicas y Naturales (ICTA-FCEFyN)–Universidad Nacional de Córdoba (UNC), 5000 Córdoba, Argentina
The aim of this work was to determine the influence of the spray dryer’s aspect ratio (height/diameter) on the physico-chemical properties of microencapsulated chia oil (CSO). Two different dryers were analyzed: a tall-type dryer [H/D = 5/1], and a short-type dryer [H/D = 1.65/1]. The former corresponded to a co-current flow, while the latter had a central air disperser in the chamber, and a rotary air flow. Emulsions were prepared by homogenization of CSO, and a mixture of soy protein isolate (SPI) and gum arabic (GA). The co-current contact in the tall-type dryer yielded greater oxidative stability indexes (OSI) (three times higher than CSO), which was possibly associated the reduced thermal degradation. It can be concluded that a co-current contact constitutes a better alternative for the protection of CSO.
