Izvorni znanstveni članak
https://doi.org/10.17113/ftb.56.01.18.5452
Microencapsulation of Algal Oil Using Spray Drying Technology
Wenyao Shao
; Department of Chemical and Biochemical Engineering, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen
Xueshan Pan
; Department of Chemical and Biochemical Engineering, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen
Xiaoting Liu
; Department of Chemical and Biochemical Engineering, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen
Feixue Teng
; Department of Chemical and Biochemical Engineering, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen
Shuai Yuan
; Department of Chemical and Biochemical Engineering, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen
Sažetak
This work aims at developing a process of microencapsulation of algal oil containing ≥40 % docosahexaenoic acid (DHA) using spray drying technology. Purity Gum® 2000 and Capsul®, both obtained from waxy corn starch, were chosen as the encapsulation materials. The effects of emulsification conditions on the droplet size, stability, viscosity and surface tension, and the effects of spraying conditions on the particle size, moisture content and surface oil content were investigated successively. The morphology of emulsion droplets and the microcapsules was observed by optical microscope and scanning electron micro scopy. The results showed that the produced spherical microcapsules were smooth and free of pores, cracks, and surface indentation when shear velocity was 8.63 m/s in the first step of emulsification, homogenization pressure was 1.75·10˄8 Pa and number of passes through homogenization unit was six for fine emulsification, rotational speed of spray disk was 400 s-1, and air inlet temperature was 170 °C. Therefore, it was concluded that the emulsification and encapsulation of algal oil containing DHA with above process was feasible.
Ključne riječi
microencapsulation; docosahexaenoic acid (DHA); algal oil, spray drying; emulsification; morphology of DHA microcapsule
Hrčak ID:
197373
URI
Datum izdavanja:
30.3.2018.
Posjeta: 1.270 *