期刊
FOOD CHEMISTRY
卷 221, 期 -, 页码 926-935出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.foodchem.2016.11.072
关键词
Metal-organic framework (MOF); Allyl isothiocyanate; Encapsulation; Controlled release; Moisture-trigger; Natural food preservative; Antimicrobial food packaging
资金
- Department of Energy, Basic Energy Sciences, division of Materials Sciences and Engineering [DE-FG02-08ER-46491]
This research investigated the technical feasibility of metal-organic frameworks (MOFs) as novel delivery systems for encapsulation and controlled release of volatile allyl isothiocyanate (AITC) molecules. We hypothesized that water vapor molecules could act as an external stimulus to trigger the release of AITC molecules encapsulated in MOFs. To test this hypothesis, three MOFs-HKUST-1, MOF-74(Zn), and RPM6-Zn-were selected based on their structural properties and AITC molecular characteristics. Results from adsorption-desorption and GC headspace analyses showed that these MOFs could encapsulate and retain AITC molecules within their pores under low (30-35%) relative humidity (RH) conditions. In contrast, the release of AITC molecules from all these MOFs was triggered under high RH (95-100%) conditions. These findings along with results from SEM, TEM, and XRPD studies support our hypothesis that water vapors could trigger the AITC release from these MOFs, indicating that development of the AITC-MOFs delivering system is technically feasible. (C) 2016 Elsevier Ltd. All rights reserved.
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