Novel solid encapsulation of ethylene gas using amorphous α-cyclodextrin and the release characteristics

Ho, Binh T. and Bhandari, Bhesh R. (2016) Novel solid encapsulation of ethylene gas using amorphous α-cyclodextrin and the release characteristics. Journal of Agricultural and Food Chemistry, 64 17: 3318-3323. doi:10.1021/acs.jafc.5b06037


Author Ho, Binh T.
Bhandari, Bhesh R.
Title Novel solid encapsulation of ethylene gas using amorphous α-cyclodextrin and the release characteristics
Formatted title
Novel solid encapsulation of ethylene gas using amorphous α-cyclodextrin and the release characteristics
Journal name Journal of Agricultural and Food Chemistry   Check publisher's open access policy
ISSN 1520-5118
0021-8561
Publication date 2016-05-04
Year available 2016
Sub-type Article (original research)
DOI 10.1021/acs.jafc.5b06037
Open Access Status Not Open Access
Volume 64
Issue 17
Start page 3318
End page 3323
Total pages 6
Place of publication Washington, DC, United States
Publisher American Chemical Society
Collection year 2017
Language eng
Formatted abstract
This research investigated the encapsulation of ethylene gas into amorphous α-cyclodextrins (α-CDs) at low (LM) and high (HM) moisture contents at 1.0-1.5 MPa for 24-120 h and its controlled release characteristics at 11.2-52.9% relative humidity (RH) for 1-168 h. The inclusion complexes (ICs) were characterized using X-ray diffractometry (XRD), nuclear magnetic resonance spectroscopy (CP-MAS 13C NMR), and scanning electron microscopy (SEM). Ethylene concentrations in the ICs were from 0.45 to 0.87 mol of ethylene/mol CD and from 0.42 to 0.54 mol of ethylene/mol CD for LM and HM α-CDs, respectively. Ethylene gas released from the encapsulated powder at higher rates with increasing RH. An analysis of release kinetics using Avrami's equation showed that the LM and HM amorphous α-CDs were not associated with significant differences in release constant k and parameter n for any given RH condition. NMR spectra showed the presence of the characteristic carbon-carbon double bond of ethylene gas in the encapsulated α-CD powder.
Keyword Amorphous
Encapsulation
Ethylene
Release
α-cyclodextrins
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status UQ

Document type: Journal Article
Sub-type: Article (original research)
Collections: HERDC Pre-Audit
School of Agriculture and Food Sciences
 
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