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Encompassment of isoeugenol in 2-hydroxypropyl-β-cyclodextrin using ultrasonication: Characterization, antioxidant and antibacterial activities
被引:45
作者:
Siva, Subramanian
[1
]
Li, Changzhu
[2
]
Cui, Haiying
[1
]
Lin, Lin
[1
]
机构:
[1] Jiangsu Univ, Sch Food & Biol Engn, Zhenjiang 212013, Jiangsu, Peoples R China
[2] Hunan Acad Forestry, Dept Bioresource, Changsha 410007, Peoples R China
基金:
中国国家自然科学基金;
关键词:
Isoeugenol;
2-Hydroxypropyl-beta-cyclodextrin;
Phase solubility;
Antioxidant activity;
Antibacterial activity;
MOLECULAR MODELING INVESTIGATIONS;
CYCLODEXTRIN INCLUSION COMPLEX;
BETA-CYCLODEXTRIN;
SUPRAMOLECULAR COMPLEXES;
PHENOLIC-COMPOUNDS;
SOLUBILITY;
ACID;
PHOTOSTABILITY;
MECHANISM;
D O I:
10.1016/j.molliq.2019.111777
中图分类号:
O64 [物理化学(理论化学)、化学物理学];
学科分类号:
070304 ;
081704 ;
摘要:
Isoeugenol is a natural dual antioxidant/prooxidant. In this research, the inclusion complex (IC) of isoeugenol with 2-hydroxypropyl-beta-cyclodextrin (HP beta CD) was prepared via the ultrasound (US) method. The US assisted isoeugenol/HP beta CD-IC was investigated by various characterization techniques such as UV-Vis absorption, fluorescence, powder X-ray diffraction, Fourier transform infrared spectroscopy, thermal gravimetric analysis and differential scanning calorimetry. Absorption, fluorescence and infrared studies indicated that the alkyl chain of isoeugenol was deeply included in the HP beta CD cavity. Through determinations of phase solubility and water solubility studies, significant enhancement of isoeugenol water solubility was confirmed after IC formation with the HP beta CD. Thermal data proved that the IC formation significantly enhanced the thermal stability of isoeugenol. Antioxidant test results indicated that isoeugenol/HP beta CD-IC exhibited better antioxidant activity than free isoeugenol due to its solubility enhancement. Furthermore, the isoeugenol/HP beta CD-IC showed higher antibacterial activity of 96 +/- 0.2% and 97 +/- 0.5% against Staphylococcus aureus and Escherichia coli bacteria, respectively. (C) 2019 Elsevier B.V. All rights reserved.
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页数:11
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