Journal
FOOD HYDROCOLLOIDS
Volume 110, Issue -, Pages -Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.foodhyd.2020.106159
Keywords
1,8-Cineole; Hydroxypropyl-beta-cyclodextrin; Inclusion complex; Release kinetics
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Funding
- National Natural Science Foundation of China (NSFC) [31401537]
- Key Projects of Sichuan Science and Technology Department [18ZDY0107]
- Expert Workstation of Yunnan Province [2017IC071]
- Science and Technology Commission of Shanghai Municipality [19DZ2284200]
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In this study, cyclodextrin was used to encapsulate 1,8-cineole to enhance the thermal stability of essential oils. The optimal conditions for encapsulation were identified using the response surface methodology, and the release behavior and kinetics of the inclusion complexes were investigated.
Essential oils can be capsulated by cyclodextrin to enhance its thermal stability and preserve the bioactivity. In this study, 1,8-cineole was used as a guest molecule to prepare the cyclodextrin inclusion complexes (ICs). The formulation and processing parameters were optimized using the response surface methodology (RSM), and the optimal conditions were identified to be: 2.30 h of encapsulating time, 30.1 degrees C of encapsulating temperature and 0.99 of molar ratio of 1,8-cineole to HP-beta-CD. The corresponding encapsulation efficiency and loading efficiency were 83.17% and 8.40%, respectively. The produced 1,8-cineole/HP-beta-CD ICs was characterized by SEM, FTIR and TGA, and the results proved the enhanced thermal stability of IC. The release behavior and kinetics of IC was investigated and showed that at elevated temperature and relative humidity, the releasing rate of 1,8-cineole from the ICs increased and followed the Fick's law.
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