Publication:
Modification of Gold Nanoparticles for SERS Application in Emulsion and Lipid Systems

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dc.contributor.advisorLili He
dc.contributor.authorDriver, Michael J.
dc.contributor.departmentUniversity of Massachusetts Amherst
dc.contributor.departmentFood Science
dc.date2024-03-28T20:25:33.000
dc.date.accessioned2024-04-26T18:27:51Z
dc.date.available2024-04-26T18:27:51Z
dc.date.submittedSeptember
dc.date.submitted2014
dc.description.abstractGold nanoparticles produced using the Turkevich method were able to have their hydrophobicity modified using octanethiol in a novel method for SERS application. Both amphiliphic GNPs and hydrophobic GNPs were produced and differentiated by Raman signals. The amphiliphic GNPs were able to enhance the SERS signals of the protein emulsifier in the emulsion in situ and the hydrophobic GNPs were able to enhance the SERS signals from canola oil. Further purification of the hydrophobic GNPs proved to have higher enhancement and sensitivity, but still poor consistency which is typical of SERS. Monitoring lipid oxidation using Raman and SERS using alternative approaches was the primary objective of the thesis. The purified GNPs were capable of enhancing the canola oil over two weeks, but the poor consistency led to no major trends. Using normal Raman, a triphenylphosphine oxidation reaction was capable of producing a peroxide value correlation in a very simple and rapid manor. Using a gold nanoparticle modified stainless steel wire, the headspace volatiles from canola oil oxidation were able to be enhanced, but with poor consistency. Silver dendrites were used to enhance the canola oil signal but with poor resolution. A combination of silver dendrites and GNPs were used to slightly improve enhancement, but not as strong as GNPs alone.
dc.description.degreeMaster of Science (M.S.)
dc.identifier.doihttps://doi.org/10.7275/6048319
dc.identifier.orcidN/A
dc.identifier.urihttps://hdl.handle.net/20.500.14394/33887
dc.relation.urlhttps://scholarworks.umass.edu/cgi/viewcontent.cgi?article=1121&context=masters_theses_2&unstamped=1
dc.source.statuspublished
dc.subjectRaman spectroscopy
dc.subjectfood analysis
dc.subjectsurface enhanced
dc.subjectnanoparticles
dc.subjectAnalytical Chemistry
dc.subjectFood Chemistry
dc.titleModification of Gold Nanoparticles for SERS Application in Emulsion and Lipid Systems
dc.typeopenaccess
dc.typearticle
dc.typethesis
digcom.contributor.authorisAuthorOfPublication|email:mdriver@umass.edu|institution:University of Massachusetts Amherst|Driver, Michael J.
digcom.identifiermasters_theses_2/83
digcom.identifier.contextkey6048319
digcom.identifier.submissionpathmasters_theses_2/83
dspace.entity.typePublication
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