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.

岩藻黄质是一种珍贵的海洋类胡萝卜素，具有多种生物活性，例如抗氧化剂，抗肥胖和抗癌作用。尽管岩藻黄质具有宝贵的性能，但在暴露于空气，热或光因素下仍具有很高的敏感性。我们的研究旨在从粳稻中提取富含岩藻黄质的油（FO）。使用超临界二氧化碳和葵花籽油（SFO）作为共溶剂，并使用来自气体饱和溶液（PGSS）工艺的颗粒和聚乙二醇（PEG）作为可生物降解的涂层来封装提取的油。使用Box-Behnken设计（BBD）的响应面方法优化了基于岩藻黄质含量的提取油的包封效率（EE）。优化了三个独立的因素，包括FO和PEG的混合比例，温度和压力。优化条件下的包封颗粒（EP）的粉末特性和储存稳定性得到了表征。FO和EP测定了抗氧化剂活性和脂肪酸含量。最佳EE约为82％，这表明PGSS和PEG包封营养油的能力。