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Optimization of encapsulation methods and conditions to maximize 1-MCP loading in modified beta-cyclodextrins
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Zhang, Han. Optimization of encapsulation methods and conditions to maximize 1-MCP loading in modified beta-cyclodextrins. Retrieved from https://doi.org/doi:10.7282/T39Z970V

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TitleOptimization of encapsulation methods and conditions to maximize 1-MCP loading in modified beta-cyclodextrins
NameZhang, Han (author); Yam, Kit (chair); LIU, LINSHU (internal member); Mir, Nazir (internal member); Rutgers University; Graduate School - New Brunswick
Date Created2016
Other Date2016-01 (degree)
SubjectFood Science, Pesticides, Ethylene
Extent1 online resource (xii, 64 p. : ill.)
Description1-methylcyclopropene (1-MCP) is a gas compound which can inhibit ethylene response in climacteric fruits. It is used to delay the ripening process and so to extend the shelf life of fresh produce. However, 1-MCP requires certain storage technology because it is highly unstable and flammable. Current storage technology is to use carrier systems such as α-cyclodextrin to encapsulate 1-MCP and thus protect and stabilize it. In the industry, high level of 1-MCP loading in carrier system is highly preferred to minimize the cost and maximize the efficiency. Therefore, encapsulation methods and conditions are critical for 1-MCP application as they determine the loading level of 1-MCP in the carrier system. The objective of this research is to identify optimum method and conditions to encapsulate 1-MCP into a newly-developed carrier system, modified β-cyclodextrin (MβCD), to maximize the loading of 1-MCP. In this research, two encapsulation methods (solution method and solid method) and five condition factors (pH, MβCD concentration, temperature, 1-MCP concentration and encapsulation duration) were investigated to identify dominant factors for each method. 1-MCP concentration and encapsulation duration were found to be two dominant factors for both methods. Response Surface Methodology (RSM) was then used to optimize those two factors to identify optimum condition with maximum 1-MCP loading. Given by RSM, optimum condition of solution method was identified at (1.33X105 ppm, 21.2 hours) with maximum loading of 0.320% while optimum condition of solid method was at (1.39x105 ppm, 12.25 hours) with maximum loading of 0.529%. After testing the actual loading at optimum condition of the two methods, results showed 0.317% loading in solution method and 0.535% loading in solid method, which were -0.937% (solution method) and +1.13% (solid method) off to predicted values given by RSM respectively, confirming found optimum condition was valid. In conclusion, solid encapsulation method gives maximum 1-MCP loading of 0.535% in MβCD at the condition of (12.25 hours, 1.39X105 ppm). The result proves the effectiveness of the chemical modification of β-CD and provides further understanding of different encapsulation mechanisms followed by those two methods.
NoteM.S.
NoteIncludes bibliographical references
Noteby Han Zhang
Genretheses, ETD graduate
Persistent URLhttps://doi.org/doi:10.7282/T39Z970V
Languageeng
CollectionGraduate School - New Brunswick Electronic Theses and Dissertations
Organization NameRutgers, The State University of New Jersey
RightsThe author owns the copyright to this work.
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