期刊
JOURNAL OF INCLUSION PHENOMENA AND MACROCYCLIC CHEMISTRY
卷 91, 期 1-2, 页码 37-45出版社
SPRINGER
DOI: 10.1007/s10847-018-0796-y
关键词
Polymer; Delivery; Photostability; Cyclodextrin; Sunscreen; Curcumin
资金
- Kasetsart University Research and Development Institute [KURDI-78.58]
- Faculty of Science, Kasetsart University (URMF)
Beta-cyclodextrin polymers (pbCD) cross-linked by epichlorohydrin (pbCDE) and citric acid (pbCDC) were prepared in this work. The inclusion complexes of pbCDE and pbCDC with curcumin and two commercial UV filters, 2-ethylhexyl-p-methoxycinnamate (EHMC) and 4-tert-butyl-4'-methoxydibenzoylmethane (DBM) were investigated. The UV absorption of these three compounds observed in water indicated that the water solubility of these three hydrophobic compounds increased. The amount of EHMC was higher in both pbCDE and pbCDC than curcumin and DBM, respectively. The photostability of these three compound inclusion complexes with pbCDE and pbCDC were also studied in water and ethylene glycol. It was found that the photostability of the three compounds improved upon formation of the inclusion complex with pbCDE in an aqueous and ethylene glycol solution. The acidity of the crosslink moiety effects to the inclusion complex formation and the photostability of the guests suggesting that more acidity of citric acid decreased the formation and stability of all guest compounds.
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