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无聚合物的维生素 A 醋酸酯/环糊精纳米纤维网的设计:抗氧化和快速溶解性能。

Design of polymer-free Vitamin-A acetate/cyclodextrin nanofibrous webs: antioxidant and fast-dissolving properties.

机构信息

Department of Fiber Science & Apparel Design, College of Human Ecology, Cornell University, Ithaca, NY 14853, USA.

出版信息

Food Funct. 2020 Sep 23;11(9):7626-7637. doi: 10.1039/d0fo01776k.

Abstract

The encapsulation of food/dietary supplements into electrospun cyclodextrin (CD) inclusion complex nanofibers paves the way for developing novel carrying and delivery substances along with orally fast-dissolving properties. In this study, CD inclusion complex nanofibers of Vitamin-A acetate were fabricated from polymer-free aqueous systems by using the electrospinning technique. The hydroxypropylated (HP) CD derivatives of HPβCD and HPγCD were used for both encapsulation of Vitamin-A acetate and the electrospinning of free-standing nanofibrous webs. The ultimate Vitamin-A acetate/CD nanofibrous webs (NWs) were obtained with a loading capacity of 5% (w/w). The amorphous distribution of Vitamin-A acetate in the nanofibrous webs by inclusion complexation and the unique properties of nanofibers (e.g. high surface area and porosity) ensured the fast disintegration and fast dissolution/release of Vitamin-A acetate/CD-NW in a saliva simulation and aqueous medium. The enhanced solubility of Vitamin-A acetate in the case of Vitamin-A acetate/CD-NW also ensured an improved antioxidant property for the Vitamin-A acetate compound. Moreover, Vitamin-A acetate thermally degraded at higher temperature in Vitamin-A acetate/CD-NWs, suggesting the enhanced thermal stability of this active compound. Here, HPβCD formed inclusion complexes in a more favorable way when compared to HPγCD. Therefore, there were some uncomplexed Vitamin-A acetate crystals detected in Vitamin-A acetate/HPγCD-NW, while Vitamin-A acetate molecules loaded in Vitamin-A acetate/HPβCD-NW were completely in complexed and amorphous states. Depending on this, better solubilizing effect, higher release amount and enhanced antioxidant properties have been provided for the Vitamin-A acetate compound in the case of Vitamin-A acetate/HPβCD-NW.

摘要

将食物/膳食补充剂包封到静电纺丝环糊精(CD)包合物纳米纤维中,为开发具有口服速溶特性的新型载体和递送物质铺平了道路。在这项研究中,通过静电纺丝技术,从无聚合物的水基体系中制备了维生素 A 醋酸酯的 CD 包合物纳米纤维。使用羟丙基(HP)β-CD 和 HPγ-CD 的 HP-CD 衍生物来包封维生素 A 醋酸酯并静电纺制独立的纳米纤维网。最终获得了负载量为 5%(w/w)的维生素 A 醋酸酯/CD 纳米纤维网(NW)。通过包合作用,维生素 A 醋酸酯在纳米纤维网中呈无定形分布,纳米纤维的独特性质(例如高表面积和孔隙率)确保了维生素 A 醋酸酯/CD-NW 在唾液模拟和水性介质中快速崩解和快速溶解/释放。维生素 A 醋酸酯在维生素 A 醋酸酯/CD-NW 中的溶解度提高也确保了维生素 A 醋酸酯化合物具有更好的抗氧化性能。此外,在维生素 A 醋酸酯/CD-NWs 中,维生素 A 醋酸酯在较高温度下热降解,表明该活性化合物的热稳定性得到提高。在这里,与 HPγ-CD 相比,HPβCD 以更有利的方式形成包合物。因此,在维生素 A 醋酸酯/HPγ-CD-NW 中检测到一些未配位的维生素 A 醋酸酯晶体,而负载在维生素 A 醋酸酯/HPβ-CD-NW 中的维生素 A 醋酸酯分子完全处于配位和无定形状态。因此,在维生素 A 醋酸酯/HPβ-CD-NW 的情况下,为维生素 A 醋酸酯化合物提供了更好的溶解效果、更高的释放量和增强的抗氧化性能。

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