Polymer surface modification using UV treatment for attachment of natamycin and the potential applications for conventional food cling wrap (LDPE)

Joongmin Shin, Xiaojing Liu, Naveen Chikthimmah, Youn Suk Lee

Research output: Contribution to journalArticle

16 Citations (Scopus)

Abstract

The purpose of this study was to develop an active non-migratory antifungal Low Density Polyethylene (LDPE) polymer for use in food packaged applications. The functional acrylic acid monomer was grafted on the LDPE film surface by photo-initiated graft polymerization using Ultra Violet light irradiation (from 0 to 5 min). Natamycin, an antifungal agent, was applied to the treated film to bind with the pendent functional groups and were evaluated its performance against mold and yeast. The grafted amounts were determined by gravimetric measurement and dye absorbance. Attenuated Total Reflectance/Fourier Transfer Infrared Spectroscopy, scanning electron microscopy, mechanical strength test was used to characterize film properties. The antifungal efficacy of the film was evaluated with Saccharomyces cerevisiae and Penicillium chrysogenum on growth media and fresh cut cantaloupe. The amounts of the grafted group were increased with the longer ultraviolet exposure time. The amount of the grafted natamycin on the treated film was up to 49.87 μg/cm 2 , and the film inhibited mycelium formation of P. chrysogenum spores by over 60%. Due to the thickness of the film (less than 12.25 μm), long time UV exposure decrease the film's mechanical strength. The application of such non-migratory active packaging film represents a promising approach to maintaining food quality with reduced additive.

Original languageEnglish
Pages (from-to)276-284
Number of pages9
JournalApplied Surface Science
Volume386
DOIs
Publication statusPublished - 2016 Nov 15

Fingerprint

Natamycin
Low density polyethylenes
Polyethylene
Surface treatment
Polymers
Yeast
Strength of materials
Antifungal agents
Antifungal Agents
Grafts
Functional groups
Acrylics
Infrared spectroscopy
Packaging
Coloring Agents
Dyes
Monomers
Polymerization
Irradiation

All Science Journal Classification (ASJC) codes

  • Chemistry(all)
  • Condensed Matter Physics
  • Physics and Astronomy(all)
  • Surfaces and Interfaces
  • Surfaces, Coatings and Films

Cite this

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abstract = "The purpose of this study was to develop an active non-migratory antifungal Low Density Polyethylene (LDPE) polymer for use in food packaged applications. The functional acrylic acid monomer was grafted on the LDPE film surface by photo-initiated graft polymerization using Ultra Violet light irradiation (from 0 to 5 min). Natamycin, an antifungal agent, was applied to the treated film to bind with the pendent functional groups and were evaluated its performance against mold and yeast. The grafted amounts were determined by gravimetric measurement and dye absorbance. Attenuated Total Reflectance/Fourier Transfer Infrared Spectroscopy, scanning electron microscopy, mechanical strength test was used to characterize film properties. The antifungal efficacy of the film was evaluated with Saccharomyces cerevisiae and Penicillium chrysogenum on growth media and fresh cut cantaloupe. The amounts of the grafted group were increased with the longer ultraviolet exposure time. The amount of the grafted natamycin on the treated film was up to 49.87 μg/cm 2 , and the film inhibited mycelium formation of P. chrysogenum spores by over 60{\%}. Due to the thickness of the film (less than 12.25 μm), long time UV exposure decrease the film's mechanical strength. The application of such non-migratory active packaging film represents a promising approach to maintaining food quality with reduced additive.",
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Polymer surface modification using UV treatment for attachment of natamycin and the potential applications for conventional food cling wrap (LDPE). / Shin, Joongmin; Liu, Xiaojing; Chikthimmah, Naveen; Lee, Youn Suk.

In: Applied Surface Science, Vol. 386, 15.11.2016, p. 276-284.

Research output: Contribution to journalArticle

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