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Enhancing the stability of synthesized curcumin by spray-drying microencapsulation with soy lecithin and gum Arabic
Brazilian Journal of Chemical Engineering ( IF 1.5 ) Pub Date : 2021-06-28 , DOI: 10.1007/s43153-021-00124-3
Vinh Tien Nguyen , Thien Minh Huynh , Thi Nhu Quynh Nguyen , Tan Hoang Le

Curcumin is a phytochemical with many beneficial biological activities, but the low solubility, stability and bioavailability have restricted its application range. To enhance curcumin stability, we microencapsulated curcumin by spray-drying together with soy lecithin as the core material and gum Arabic as the shell material. SEM images showed that the spray-dried microcapsules were irregular in shape and 4.3 ± 2.0 µm (mean ± standard deviation) in size. Results of Fourier transform infrared spectroscopy and differential scanning calorimetry exhibited intermolecular interactions between components in the microcapsules. X-ray diffraction patterns revealed the amorphous character of the microcapsules, which explained their high solubility in water. Increasing the shell/core mass ratio from 1:1 to 3:1 significantly improved not only the encapsulation efficiency of curcumin, but also the stability of the encapsulated curcumin toward light, high temperature, and neutral—basic pH conditions. However, increasing the shell/core ratio from 3:1 to 5:1 did not yield significant improvements in encapsulation efficiency, solubility and stability of curcumin. At 70 °C, curcumin in the microcapsules was stable for all studied core:shell ratios, suggesting an interaction between curcumin and gum arabic that blocks the degradation mechanism of curcumin. This study showed that microencapsulation using gum arabic as a wall material can be implemented to protect curcumin from adverse conditions, thus promoting its applicability in the food and the pharmaceutical industries.



中文翻译:

通过大豆卵磷脂和阿拉伯树胶喷雾干燥微胶囊增强合成姜黄素的稳定性

姜黄素是一种具有多种有益生物活性的植物化学物质,但溶解度低、稳定性和生物利用度低限制了其应用范围。为了增强姜黄素的稳定性,我们通过喷雾干燥将姜黄素微囊化,以大豆卵磷脂为核心材料,阿拉伯树胶为壳材料。SEM 图像显示喷雾干燥的微胶囊形状不规则,尺寸为 4.3 ± 2.0 µm(平均值 ± 标准偏差)。傅里叶变换红外光谱和差示扫描量热法的结果表明微胶囊中的组分之间存在分子间相互作用。X 射线衍射图揭示了微胶囊的无定形特性,这解释了它们在水中的高溶解度。将壳/核质量比从 1:1 增加到 3:1不仅显着提高了姜黄素的包封效率,而且包封后的姜黄素对光、高温和中性-碱性pH条件的稳定性也有显着提高。然而,将壳核比从 3:1 增加到 5:1 并没有显着提高姜黄素的包封效率、溶解度和稳定性。在 70 °C 时,微胶囊中的姜黄素对于所有研究的核壳比都是稳定的,这表明姜黄素和阿拉伯树胶之间的相互作用阻止了姜黄素的降解机制。该研究表明,可以实施使用阿拉伯树胶作为壁材的微囊化来保护姜黄素免受不利条件的影响,从而促进其在食品和制药行业中的适用性。以及封装的姜黄素对光、高温和中性碱性 pH 条件的稳定性。然而,将壳核比从 3:1 增加到 5:1 并没有显着提高姜黄素的包封效率、溶解度和稳定性。在 70 °C 时,微胶囊中的姜黄素对于所有研究的核壳比都是稳定的,这表明姜黄素和阿拉伯树胶之间的相互作用阻止了姜黄素的降解机制。该研究表明,可以实施使用阿拉伯树胶作为壁材的微囊化来保护姜黄素免受不利条件的影响,从而促进其在食品和制药行业中的适用性。以及封装的姜黄素对光、高温和中性碱性 pH 条件的稳定性。然而,将壳核比从 3:1 增加到 5:1 并没有显着提高姜黄素的包封效率、溶解度和稳定性。在 70 °C 时,微胶囊中的姜黄素对于所有研究的核壳比都是稳定的,这表明姜黄素和阿拉伯树胶之间的相互作用阻止了姜黄素的降解机制。该研究表明,可以实施使用阿拉伯树胶作为壁材的微囊化来保护姜黄素免受不利条件的影响,从而促进其在食品和制药行业中的适用性。1在姜黄素的包封效率、溶解性和稳定性方面没有产生显着改善。在 70 °C 时,微胶囊中的姜黄素对于所有研究的核壳比都是稳定的,这表明姜黄素和阿拉伯树胶之间的相互作用阻止了姜黄素的降解机制。该研究表明,可以实施使用阿拉伯树胶作为壁材的微囊化来保护姜黄素免受不利条件的影响,从而促进其在食品和制药行业中的适用性。1在姜黄素的包封效率、溶解性和稳定性方面没有产生显着改善。在 70 °C 时,微胶囊中的姜黄素对于所有研究的核壳比都是稳定的,这表明姜黄素和阿拉伯树胶之间的相互作用阻止了姜黄素的降解机制。该研究表明,可以实施使用阿拉伯树胶作为壁材的微囊化来保护姜黄素免受不利条件的影响,从而促进其在食品和制药行业中的适用性。

更新日期:2021-06-28
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