Abstract
Fucoxanthin is a precious marine carotenoid with multiple bioactivities such as antioxidant, anti-obesity, and anti-cancer effects. Despite its valuable properties, fucoxanthin possesses high sensitivity when exposed to aerial, thermal, or light factors. Our study aims to extract fucoxanthin-rich oil (FO) from Saccharina japonica using supercritical carbon dioxide with sunflower oil (SFO) as co-solvent and encapsulate the extracted oil using particles from gas-saturated solutions (PGSS) process with polyethylene glycol (PEG) as a biodegradable coating. The encapsulation efficiency (EE) of the extracted oil based on fucoxanthin content was optimized using response surface methodology with Box-Behnken design (BBD). Three independent factors, including mixing ratio of FO and PEG, temperature, and pressure, were optimized. The encapsulated particles (EP) at optimized conditions were characterized for their powder properties and storage stability. FO and EP were measured in antioxidant activities and fatty acids content. The optimum EE was approximately 82%, implying the capability of PGSS and PEG in encapsulating nutritious oil.
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