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Effect of controlled release of tocopherol on lipid oxidation

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TitleInfo
Title
Effect of controlled release of tocopherol on lipid oxidation
Name (type = personal)
NamePart (type = family)
Shen
NamePart (type = given)
Luni
NamePart (type = date)
1985-
DisplayForm
Luni Shen
Role
RoleTerm (authority = RULIB)
author
Name (type = personal)
NamePart (type = family)
Yam
NamePart (type = given)
Kit L.
DisplayForm
Kit L. Yam
Affiliation
Advisory Committee
Role
RoleTerm (authority = RULIB)
chair
Name (type = personal)
NamePart (type = family)
DAUN
NamePart (type = given)
HENRYK
DisplayForm
HENRYK DAUN
Affiliation
Advisory Committee
Role
RoleTerm (authority = RULIB)
internal member
Name (type = personal)
NamePart (type = family)
Schaich
NamePart (type = given)
Karen M.
DisplayForm
Karen M. Schaich
Affiliation
Advisory Committee
Role
RoleTerm (authority = RULIB)
internal 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 (qualifier = exact)
2012
DateOther (qualifier = exact); (type = degree)
2012-01
CopyrightDate (qualifier = exact)
2012
Place
PlaceTerm (type = code)
xx
Language
LanguageTerm (authority = ISO639-2b); (type = code)
eng
Abstract (type = abstract)
Lipid oxidation is one of the major problems affecting the shelf life of fatty foods. Controlled release packaging (CRP) is an innovative packaging technology that incorporates antioxidants into packaging materials and releases them in a controlled manner to food products thus providing continuous replenishment of antioxidants to food. The objective of this research is to study the release behaviors of tocopherol (antioxidant) in CRP films and simulate these release behaviors with different initial concentrations to examine the effect of controlled release of tocopherol on lipid oxidation. Low density polyethylene (LDPE), polypropylene (PP) and LDPE/PP blend films were manufactured by extrusion process to contain 3000 ppm of tocopherol. Release behaviors of tocopherol in the package films were studied and diffusivity values of tocopherol in above three films were estimated from the release study at different temperatures, which ranged from 2.04*10-16 m2/s to 2.39*10-13 m2/s. Release profiles of tocopherol from LDPE and LDPE/PP films were simulated in a syringe pump using estimated diffusivities and two initial tocopherol concentrations (100 and 300 ppm) to inhibit lipid oxidation of linoleic acid at 40 ÂșC. The induction period of lipid oxidation was determined to evaluate the antioxidant effectiveness of tocopherol with different release profiles. Induction period changed significantly with controlled release compared to instant addition. For releasing of 100 ppm tocopherol, release by DLDPE, the induction period was 73 hours, longer than that of instant addition (57 hours). For releasing by DLDPE/PP, the induction period was 47 hours, shorter than instant addition. For releasing of 300 ppm tocopherol, release by DLDPE, the induction period (213 hours) was twice of that from instant addition (91 hours). This work demonstrated that controlled release of tocopherol from CRP films has great impact on induction period extension of lipid oxidation. Less tocopherol can be applied to achieve longer induction period compare to instant addition. However, too slow diffusion of tocopherol in certain polymer may not have the effect to prevent lipid oxidation. This work provides partial quantitative information to help researchers and packaging manufacturers select suitable initial concentration and polymer types based on required shelf life.
Subject (authority = RUETD)
Topic
Food Science
Subject (authority = ETD-LCSH)
Topic
Lipids--Research
Subject (authority = ETD-LCSH)
Topic
Controlled release technology
Subject (authority = ETD-LCSH)
Topic
Food--Preservation
RelatedItem (type = host)
TitleInfo
Title
Rutgers University Electronic Theses and Dissertations
Identifier (type = RULIB)
ETD
Identifier
ETD_3794
PhysicalDescription
Form (authority = gmd)
electronic resource
InternetMediaType
application/pdf
InternetMediaType
text/xml
Extent
x, 79 p. : ill.
Note (type = degree)
M.S.
Note (type = bibliography)
Includes bibliographical references
Note (type = vita)
Includes vita
Note (type = statement of responsibility)
by Luni Shen
Subject (authority = ETD-LCSH)
Topic
Food--Vitamin E content
Identifier (type = hdl)
http://hdl.rutgers.edu/1782.1/rucore10001600001.ETD.000064180
RelatedItem (type = host)
TitleInfo
Title
Graduate School - New Brunswick Electronic Theses and Dissertations
Identifier (type = local)
rucore19991600001
Location
PhysicalLocation (authority = marcorg); (displayLabel = Rutgers, The State University of New Jersey)
NjNbRU
Identifier (type = doi)
doi:10.7282/T3S75FCV
Genre (authority = ExL-Esploro)
ETD graduate
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Rights

RightsDeclaration (ID = rulibRdec0006)
The author owns the copyright to this work.
RightsHolder (type = personal)
Name
FamilyName
Shen
GivenName
Luni
Role
Copyright Holder
RightsEvent
Type
Permission or license
DateTime (encoding = w3cdtf); (qualifier = exact); (point = start)
2012-01-09 14:29:18
AssociatedEntity
Name
Luni Shen
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

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3202560
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application/pdf
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application/x-tar
FileSize (UNIT = bytes)
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Checksum (METHOD = SHA1)
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