Abstract The SFEE technology was used to micronize the food-approved-biopolymer Eudraguard® protect. After setting the ratio of emulsion phases to 20:80 ethyl acetate:water, higher surfactant (0.1–10.0%) and lower polymer (1–10%) concentrations reduced the size of the particles. By halving the stirring speed to 1250 rpm during the homogenization of the emulsion, larger particles were formed. All these manipulations allowed the creation of particles ranging from 10 nm to 200 nm. A higher viscosity of the organic phase, achieved with 2% vitamin E, increased the particle size to 300 nm. Afterwards, SFEE was used to encapsulate hydroxytyrosol-rich olive oil (HT-oil), obtained from alperujo, in Eudraguard® protect for its preservation. Spherical non-aggregate particles were formed with an average of 230 nm. High degrees of encapsulation were possible (up to 99%) resulting in loadings of HT-oil in the obtained particles of 39% with 0.7 mg HT per g of particle.

中文翻译：

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Eudraguard® 中富含羟基酪醇的橄榄油的封装通过乳液的超临界流体萃取进行保护

摘要 SFEE 技术用于微粉化食品批准的生物聚合物 Eudraguard®protect。将乳液相的比例设定为 20:80 乙酸乙酯:水后，较高的表面活性剂 (0.1–10.0%) 和较低的聚合物 (1–10%) 浓度会降低颗粒的尺寸。通过在乳液均质过程中将搅拌速度减半至 1250 rpm，形成了较大的颗粒。所有这些操作都允许产生 10 nm 到 200 nm 的粒子。使用 2% 维生素 E 获得更高的有机相粘度，将粒径增加到 300 nm。之后，SFEE 被用于封装从 alperujo 获得的富含羟基酪醇的橄榄油 (HT-油)，在 Eudraguard® 保护中进行保存。形成了平均为 230 nm 的球形非聚集颗粒。