The characterization and evaluation of the synthesis of large-ring cyclodextrins (CD9-CD22) and alpha-tocopherol with enhanced thermal stability
文献类型： 外文期刊
作者： Cao, Chuan 1 ; Xu, Li 1 ; Xie, Peng 3 ; Hu, Jinwei 1 ; Qi, Jun 1 ; Zhou, Yibin 1 ; Cao, Lei 4 ;
作者机构： 1.Anhui Agr Univ, Anhui Engn Lab Agroprod Proc, Hefei 230036, Anhui, Peoples R China
2.Anhui Vocat Coll Grain Engn, Hefei 230011, Anhui, Peoples R China
3.Nanjing Univ Finance & Econ, Nanjing, Jiangsu, Peoples R China
4.Anhui Acad Agr Sci, Inst Agroprod Proc, Hefei, Anhui, Peoples R China
期刊名称：RSC ADVANCES （ 影响因子：3.361； 五年影响因子：3.39 ）
ISSN：
年卷期： 2020 年 10 卷 11 期
页码：
收录情况： SCI
摘要： Large-ring cyclodextrins LR-CDs (CD9-CD22) were obtained from rice starch using cyclodextrin glycosyltransferase (CGTase), and were used as a wall material for embedding alpha-tocopherol. Complexes of alpha-tocopherol and LR-CDs were prepared by co-precipitation. A molar ratio of alpha-tocopherol/LR-CD of 1 : 2 showed the highest encapsulation efficiency. The surface morphology of the complex particles was observed to vary from irregular flakes to the formation of smaller clusters of particles using scanning electron microscopy (SEM). Based on H-1 NMR and FT-IR observations, the inclusion complexes exhibited significant chemical shifts of 0.3 ppm and decreased peak signals. In addition, thermal analysis showed that the microcapsules improved the thermostability of the alpha-tocopherols. Antioxidant activity analysis proved the stability of alpha-tocopherol during storage. This study could serve as a reference for the more effective use of LR-CDs as wall materials.
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