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Development of liquid 1-methylcyclopropene delivery formulations for modifying ethylene response of fresh produce
Descriptive
TitleInfo
Title
Development of liquid 1-methylcyclopropene delivery formulations for modifying ethylene response of fresh produce
Name
(type = personal)
NamePart
(type = family)
Chen
NamePart
(type = given)
Xi
DisplayForm
Xi Chen
Role
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(authority = RULIB)
author
Name
(type = personal)
NamePart
(type = family)
Yam
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(type = given)
Kit
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Kit Yam
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Advisory Committee
Role
RoleTerm
(authority = RULIB)
chair
Name
(type = personal)
NamePart
(type = family)
Gianfagna
NamePart
(type = given)
Thomas
DisplayForm
Thomas Gianfagna
Affiliation
Advisory Committee
Role
RoleTerm
(authority = RULIB)
internal member
Name
(type = personal)
NamePart
(type = family)
Mir
NamePart
(type = given)
Nazir
DisplayForm
Nazir Mir
Affiliation
Advisory Committee
Role
RoleTerm
(authority = RULIB)
internal member
Name
(type = personal)
NamePart
(type = family)
Khan
NamePart
(type = given)
Sanaulla
DisplayForm
Sanaulla Khan
Affiliation
Advisory Committee
Role
RoleTerm
(authority = RULIB)
outside member
Name
(type = corporate)
NamePart
Rutgers University
Role
RoleTerm
(authority = RULIB)
degree grantor
Name
(type = corporate)
NamePart
Graduate School - New Brunswick
Role
RoleTerm
(authority = RULIB)
school
TypeOfResource
Text
Genre
(authority = marcgt)
theses
OriginInfo
DateCreated
(encoding = w3cdtf);
(qualifier = exact)
2015
DateOther
(qualifier = exact);
(type = degree)
2015-10
CopyrightDate
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(qualifier = exact)
2015
Place
PlaceTerm
(type = code)
xx
Language
LanguageTerm
(authority = ISO639-2b);
(type = code)
eng
Abstract
(type = abstract)
The objective of this dissertation is to develop 1-methylcycopropene (1-MCP) liquid formulations for fresh produce, to manage the undesirable effects of ethylene. The formulation can be used as a sprayable formulation for pre-harvest application, or made into a capsule for post-harvest application. The formulation consists of (1) a cyclodextrin based material (α or modified β-cyclodextrin) as the encapsulant for 1-MCP, (2) a moisture blocking formulation (e.g. polyol/hydrocolloid formulation) to further enclose 1-MCP, and (3) a water based solution to facilitate the release of the formulation. To develop this formulation, five sub-objectives were achieved. 1. Synthesis and characterization of modified β-cyclodextrin 2. Encapsulation of 1-MCP into modified β-cyclodextrin and quantification of 1-MCP inclusion ratio 3. Stabilization of the complex as liquid formulation using materials such as polyol/hydrocolloid blend and mineral oil 4. Evaluation of the sprayability of the liquid formulation and release of 1-MCP 5. Evaluation of biological efficacy of the 1-MCP released from the liquid formulation The key conclusions of this dissertation are as follows. • Modification of β-cyclodextrin was optimized to yield 90-95% powder. The powder has better modified pore size and particle size, which are more favorable for 1-MCP encapsulation than β-cyclodextrin. • 1-MCP can be encapsulated under 0.1 atm headspace concentration both using solid-gas method (inclusion level 0.5%) and in solution-gas method (inclusion level 0.3%). • A stable formulation was developed consisting of mineral oil, HPC and polysorbate for both α and modified β-cyclodextrins. After 30 days of storage at room temperature, more than 90% of 1-MCP can be retained in the formulation. After 14 days of storage at 55°C (equivalent to 1 year storage at room temperature), more than 80% of 1-MCP can be retained in the formulation. • After hydration using different concentrations of xanthan gum, liquid formulation can be sprayed and complete release can be obtained in 6 hours. • 1-MCP released from the formulation is biologically effective that no dimer or isomer formation at treatment level (1 ppm). It was able to extend the shelf life of bananas (color stage 2-2.5) from 2 days to 5 days at room temperature.
Subject
(authority = RUETD)
Topic
Food Science
RelatedItem
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TitleInfo
Title
Rutgers University Electronic Theses and Dissertations
Identifier
(type = RULIB)
ETD
Identifier
ETD_6850
PhysicalDescription
Form
(authority = gmd)
electronic resource
InternetMediaType
application/pdf
InternetMediaType
text/xml
Extent
1 online resource (xiii, 113 p. : ill.)
Note
(type = degree)
Ph.D.
Note
(type = bibliography)
Includes bibliographical references
Subject
(authority = ETD-LCSH)
Topic
Ethylene--Physiological effect
Note
(type = statement of responsibility)
by Xi Chen
RelatedItem
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TitleInfo
Title
Graduate School - New Brunswick Electronic Theses and Dissertations
Identifier
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rucore19991600001
Location
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(displayLabel = Rutgers, The State University of New Jersey)
NjNbRU
Identifier
(type = doi)
doi:10.7282/T3571DZZ
Genre
(authority = ExL-Esploro)
ETD doctoral
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Rights
RightsDeclaration
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The author owns the copyright to this work.
RightsHolder
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Name
FamilyName
Chen
GivenName
Xi
Role
Copyright Holder
RightsEvent
Type
Permission or license
DateTime
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(qualifier = exact);
(point = start)
2015-10-01 09:54:37
AssociatedEntity
Name
Xi Chen
Role
Copyright holder
Affiliation
Rutgers University. Graduate School - New Brunswick
AssociatedObject
Type
License
Name
Author Agreement License
Detail
I hereby grant to the Rutgers University Libraries and to my school the non-exclusive right to archive, reproduce and distribute my thesis or dissertation, in whole or in part, and/or my abstract, in whole or in part, in and from an electronic format, subject to the release date subsequently stipulated in this submittal form and approved by my school. I represent and stipulate that the thesis or dissertation and its abstract are my original work, that they do not infringe or violate any rights of others, and that I make these grants as the sole owner of the rights to my thesis or dissertation and its abstract. I represent that I have obtained written permissions, when necessary, from the owner(s) of each third party copyrighted matter to be included in my thesis or dissertation and will supply copies of such upon request by my school. I acknowledge that RU ETD and my school will not distribute my thesis or dissertation or its abstract if, in their reasonable judgment, they believe all such rights have not been secured. I acknowledge that I retain ownership rights to the copyright of my work. I also retain the right to use all or part of this thesis or dissertation in future works, such as articles or books.
Copyright
Status
Copyright protected
Availability
Status
Open
Reason
Permission or license
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Technical
RULTechMD
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ContentModel
ETD
OperatingSystem
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windows xp
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