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Materials 2017, 10(10), 1210; doi:10.3390/ma10101210

Preparation and Characterization of Ternary Antimicrobial Films of β-Cyclodextrin/Allyl Isothiocyanate/Polylactic Acid for the Enhancement of Long-Term Controlled Release

1,2,3,* , 1,2,3
,
4,5
and
1,2,5
1
State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi 214122, China
2
School of Food Science and Technology, Jiangnan University, Wuxi 214122, China
3
Synergetic Innovation Center of Food Safety and Nutrition, Jiangnan University, Wuxi 214122, China
4
Department of Agricultural and Biological Engineering, 225 South University Street, Purdue University, West Lafayette, IN 47907, USA
5
International Joint Laboratory on Food Safety, Jiangnan University, Wuxi 214122, China
*
Author to whom correspondence should be addressed.
Received: 19 September 2017 / Revised: 11 October 2017 / Accepted: 12 October 2017 / Published: 20 October 2017
View Full-Text   |   Download PDF [2036 KB, uploaded 22 October 2017]   |  

Abstract

Allyl isothiocyanate (AITC) are natural essential oil components that have outstanding antimicrobial activities. However, low water solubility, high volatility, and easy degradation by heat, restricting their application in food packing industry. Development of the inclusion complex of β-cyclodextrin/AITC (β-CD/AITC) is a promising solution. Furthermore, the incorporation of β-CD/AITC complex into polylactic acid (PLA) films would be an attractive method to develop food antimicrobial materials. The aim of this study was to evaluate the enhancement in physicochemical properties, antimicrobial activities, and controlled release of β-CD/AITC from such films. The addition of β-CD/AITC significantly increased the flexibility and thermal stability of films. The Fourier transform infrared (FTIR) results revealed that the interactions between β-CD/AITC and PLA films occurred. The controlled release of AITC encapsulated in β-CD was significantly affected by relative humidity and temperature. The PLA films containing β-CD/AITC can be applied as an effective antimicrobial packing material for food and non-food applications. View Full-Text
Keywords: allyl isothiocyanate; inclusion complex; antimicrobial activities; microstructure; controlled release allyl isothiocyanate; inclusion complex; antimicrobial activities; microstructure; controlled release
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MDPI and ACS Style

Wang, J.; Qiu, C.; Narsimhan, G.; Jin, Z. Preparation and Characterization of Ternary Antimicrobial Films of β-Cyclodextrin/Allyl Isothiocyanate/Polylactic Acid for the Enhancement of Long-Term Controlled Release. Materials 2017, 10, 1210.

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