Spray-Air Contact in Tall and Short-Type Spray Dryers Affects Important Physicochemical Properties of Microencapsulated Chia Seed Oil

Autor: María Gabriela Bordón, Noelia P. X. Alasino, Maria Victoria Defaín Tesoriero, Nahuel Camacho, Maria C. Penci, Marcela L. Martínez, Pablo D. Ribotta
Jazyk: angličtina
Rok vydání: 2020
Předmět:
Zdroj: Proceedings, Vol 53, Iss 1, p 19 (2020)
Druh dokumentu: article
ISSN: 2504-3900
DOI: 10.3390/proceedings2020053019
Popis: 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.
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