Department of Hospitality Management, MingDao Unicersity, 369 Wen-Hua Rd., ChangHua 52345, Taiwan.
Department of Food Science and Biotechnology, National Chung Hsing University, 250 Kuokuang Road, Taichung 40227, Taiwan.
Mar Drugs. 2019 Mar 7;17(3):156. doi: 10.3390/md17030156.
Self-emulsion improves solubility and bioavailability for γ-oryzanol/algae oil, and alginate beads can be used as controlled release carriers. In this study, self-emulsified alginate beads (SEABs) were prepared with different weight ratios of self-emulsion treatment (5%, 10%, 15%, 20%, and 30%) with alginate. We found that the microstructure with a surfactant of SEABs had a different appearance with alginate-based beads. The encapsulation of γ-oryzanol corresponded with the self-emulsion/alginate ratio, which was 98.93~60.20% with a different formulation of SEABs. During in vitro release, SEABs had the gastric protection of γ-oryzanol/algae oil, because γ-oryzanol and emulsion were not released in the simulated stomach fluid. When the SEABs were transferred to a simulation of the small intestine, they quickly began to swell and dissolve, releasing a higher content of the emulsion. We observed that the emulsion that formed had a bimodal distribution in the simulated intestinal fluid as a result of the hydrogel and emulsion droplets, leading to the formation of large aggregates. These results suggested that γ-oryzanol encapsulation within alginate beads via emulsification combined with gelation can serve as an effective controlled delivery system.
自乳化可提高γ-谷维素/藻油的溶解度和生物利用度,并且藻酸盐珠可用作控制释放载体。在这项研究中,使用不同重量比的自乳化处理(5%、10%、15%、20%和 30%)与藻酸盐制备了自乳化藻酸盐珠(SEAB)。我们发现,具有表面活性剂的 SEAB 的微观结构与基于藻酸盐的珠具有不同的外观。γ-谷维素的包封与自乳化/藻酸盐的比例相对应,不同 SEAB 配方的包封率为 98.93%至 60.20%。在体外释放过程中,SEAB 具有γ-谷维素/藻油的胃保护作用,因为γ-谷维素和乳液在模拟胃液中均未释放。当 SEAB 转移到模拟小肠时,它们会迅速膨胀和溶解,并释放出更高含量的乳液。我们观察到,由于水凝胶和乳液滴的存在,在模拟肠液中形成的乳液呈双峰分布,从而形成大的聚集体。这些结果表明,通过乳化结合凝胶化将γ-谷维素包封在藻酸盐珠内可以作为有效的控制释放系统。
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