Microencapsulation of Docosahexaenoic Acid Algal Oil Using Spray Drying Technology
| Autor: | Shuai Yuan, Feixue Teng, Xiaoting Liu, Wenyao Shao, Xueshan Pan |
|---|---|
| Rok vydání: | 2018 |
| Předmět: |
Materials science
Starch Scanning electron microscope General Chemical Engineering 04 agricultural and veterinary sciences 02 engineering and technology 021001 nanoscience & nanotechnology 040401 food science Homogenization (chemistry) Industrial and Manufacturing Engineering law.invention Surface tension chemistry.chemical_compound 0404 agricultural biotechnology Optical microscope chemistry Chemical engineering law Spray drying Particle size 0210 nano-technology Water content Food Science Biotechnology |
| Zdroj: | Food Technology and Biotechnology. 56 |
| ISSN: | 1334-2606 1330-9862 |
| Popis: | 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 microscopy. 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 1.75·108 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. |
| Databáze: | OpenAIRE |
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