Browsing by Author "Pastuña Pullutasig, Alex Ricardo"

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    Microencapsulación de aceite de sacha inchi (Plukenetia volubilis L.) mediante secado por aspersión.
    (Universidad Técnica de Ambato. Facultad de Ciencia e Ingeniería en Alimentos. Carrera de Ingeniería Bioquímica, 2016-03) Pastuña Pullutasig, Alex Ricardo; López Hernández, Orestes Darío
    When using oils rich in unsaturated fatty acids, the most common problem is their rapid degradation while exposed to different environmental conditions, the method of microencapsulation by spray drying aims to reduce these degradative processes and extend the lifespan of these type of oils. The objective of this research was microencapsulated sacha inchi oil by spray drying, in order to prevent oxidative degradation reactions, given its high content of monounsaturated and polyunsaturated fatty acids, which present great health benefits. Employing a maltodextrin-gum Arabic system in the same ratio (1: 1), the inlet temperature and the oil charge was evaluated, being 150 ° C and 33% the best conditions during the drying process, obtaining a performance and efficiency microencapsulation of 82.10 ± 0.99% and 93.90 ± 0.56% respectively. By physicochemical analysis, the microencapsulated sacha inchi oil moisture was evaluated, keeping a moisture content at 26 weeks of 4.60 ± 0.02%, applying gas chromatography there is no variation in the acid profile fatty before and after microencapsulation was found. Through infrared spectroscopy it was shown that sacha inchi oil is inserted into the core of the microcapsules. The electron microscopy scanning allowed to observe that the microcapsules have a spherical shape with a smooth surface and free of pores which prevent direct contact of the oil with different ambient conditions, in addition an average particle size distribution was determined from 60.36 ± 14.41 microns. The reproducibility for the process of Sacha inchi oil microencapsulation was demonstrated through spray drying at an industrial scale while maintaining the principle of similarity to the laboratory scale process, obtaining a performance higher than 70% and an efficiency of microencapsulation of 81.1 6± 0.91%.