State Key Laboratory of Biobased Material and Green Papermaking, Qilu University of Technology, Shandong Academy of Sciences, Jinan 250353, China; School of Food Science and Engineering, Qilu University of Technology, Jinan 250353, China.
State Key Laboratory of Biobased Material and Green Papermaking, Qilu University of Technology, Shandong Academy of Sciences, Jinan 250353, China; School of Food Science and Engineering, Qilu University of Technology, Jinan 250353, China.
Food Chem. 2022 May 30;377:131995. doi: 10.1016/j.foodchem.2021.131995. Epub 2021 Dec 31.
Here, a cinnamaldehyde essential oil (CEO)/β-Cyclodextrin (β-CD) composite with a high embedding rate (91.74 ± 0.82%) was prepared. Its structure was characterized by Fourier transform infrared spectrometer (FT-IR) and X-ray diffractometer (XRD). Pickering emulsions prepared by β-CD and CEO/β-CD at different concentrations (1-5%) were comparatively investigated. The CEO/β-CD emulsions had better storage stability. Rheological results confirmed the emulsions were all gel-like elastic emulsions and had shear thinning phenomenon. Fluorescence microscopy and scanning electron microscopy (SEM) results confirmed that the most of excessive β-CD was adsorbed on the surface of emulsion droplets as crystals, formed thick protective shell in β-CD emulsions, while the most of excessive composites were distributed in the aqueous phase forming a stable network structure in CEO/β-CD emulsions. It caused these two emulsions had different rheological properties, and different changing trends in droplet size.
这里，制备了一种具有高包埋率（91.74±0.82%）的肉桂醛精油（CEO）/β-环糊精（β-CD）复合物。其结构通过傅里叶变换红外光谱仪（FT-IR）和 X 射线衍射仪（XRD）进行了表征。比较研究了不同浓度（1-5%）的β-CD 和 CEO/β-CD 制备的 Pickering 乳液。CEO/β-CD 乳液具有更好的储存稳定性。流变学结果证实，这些乳液均为凝胶状弹性乳液，具有剪切变稀现象。荧光显微镜和扫描电子显微镜（SEM）结果证实，过量的β-CD 大部分被吸附在乳液液滴表面上形成晶体，在β-CD 乳液中形成厚的保护壳，而过量的复合物大部分分布在水相中，在 CEO/β-CD 乳液中形成稳定的网络结构。这导致这两种乳液具有不同的流变性质，以及液滴尺寸的不同变化趋势。
