Antimicrobial and Barrier Properties of LDPE Films Containing Imazalil and EDTA

Vartiainen, Jari; Skyttä, Eija; Ahvenainen-Rantala, Raija; Enqvist, Jouni

doi:10.1177/8756087903042808

Cited by 24 publications

(11 citation statements)

References 14 publications

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“…In addition to the antibacterial activity, the antifungal activity of synthetic AM agents incorporated in polymeric materials has been investigated (Halek and Anita 1989; López‐Malo and others 2007). Vartiainen and others (2003a) examined the inhibitory effects of imazalil incorporated into LDPE against the growth of A. niger by the agar diffusion assay with films containing 0.05% to 0.25% (w/w) imazalil demonstrating significant inhibitory activity. Weng and Hotchkiss (1992) incorporated imazalil into LDPE film and evaluated the antimycotic activity of this agent on the growth of A. toxacarius and Penicillium sp.…”

Section: Am Packaging Systemsmentioning

confidence: 99%

Essential Oils and Their Principal Constituents as Antimicrobial Agents for Synthetic Packaging Films

Kuorwel¹,

Cran²,

Sonneveld³

et al. 2011

Journal of Food Science

166

105

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Spices and herbal plant species have been recognized to possess a broad spectrum of active constituents that exhibit antimicrobial (AM) activity. These active compounds are produced as secondary metabolites associated with the volatile essential oil (EO) fraction of these plants. A wide range of AM agents derived from EOs have the potential to be used in AM packaging systems which is one of the promising forms of active packaging systems aimed at protecting food products from microbial contamination. Many studies have evaluated the AM activity of synthetic AM and/or natural AM agents incorporated into packaging materials and have demonstrated effective AM activity by controlling the growth of microorganisms. This review examines the more common synthetic and natural AM agents incorporated into or coated onto synthetic packaging films for AM packaging applications. The focus is on the widely studied herb varieties including basil, oregano, and thyme and their EOs.

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Section: Am Packaging Systemsmentioning

confidence: 99%

Essential Oils and Their Principal Constituents as Antimicrobial Agents for Synthetic Packaging Films

Kuorwel¹,

Cran²,

Sonneveld³

et al. 2011

Journal of Food Science

166

105

View full text Add to dashboard Cite

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“…So, most of the researches of antimicrobial food packaging has been based on LDPE polymer matrix. Some examples of antimicrobials which incorporated into LDPE are sorbate compound (Han et al 2007;Han and Floros 1997), imazalil (Vartianen et al 2003), nisin (Mauriello et al 2005), silver zeolite (Ishitani 1995), and natural extracts such as basil constituents (Suppakul et al 2008), grapefruit seed extract (Lee et al 1998), thymol and rosemary oleoresin (Han et al 2007), and clove extract (Hong et al 2000). Among all these, silver nanoparticles deserve special attention due to their unique properties, high thermal stability, and long-term activity, which differentiate from other antimicrobial additives.…”

Section: Introductionmentioning

confidence: 98%

Melt Production and Antimicrobial Efficiency of Low-Density Polyethylene (LDPE)-Silver Nanocomposite Film

Jokar

Rahman

Ibrahim

et al. 2010

Food Bioprocess Technol

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Colloidal silver nanoparticles with a size of 5.5± 1.1 nm were prepared by chemical reduction using polyethylene glycol (PEG). Silver nanoparticles were incorporated into low-density polyethylene (LDPE) by melt blending and subsequent hot pressing at 140°C to produce nanocomposite film with an average thickness of 0.7 mm. PEG was added at 5% weight of polymer as a compatibilizer agent in order to prevent agglomeration and provide uniform distribution of nanoparticles in polymer matrix. Antimicrobial activity of silver nanocomposites against Escherichia coli ATCC 13706, Staphylococcus aureus ATCC12600, and Candida albicans ATCC10231 was evaluated by semi-qualitative agar diffusion test and quantitative dynamic shake flask test. Mechanical properties of nanocomposites were not significantly different from silverfree LDPE-containing PEG films (p>0.05), and silver nanoparticles did not form chemical bonding with the polymer. LDPE-silver nanocomposite samples by more than 6.69 ppm silver nanoparticles showed considerable antimicrobial clear zone. LDPE-silver nanocomposite affected growth kinetic parameters of the examined bacteria and is more efficient on S. aureus than E. coli. Polyethylene-silver nanocomposites containing 22.64 ppm silver nanoparticles could reduce 57.8% growth rate and 23.3% maximum bacterial concentration and increase 35.8% lag time of S. aureus. This study shows the potential use of LDPE-silver nanocomposite as antimicrobial active film. Antimicrobial efficiency of silver nanocomposite depends on silver nanoparticles concentration; however, high level of silver nanoparticles may lead to weakening of mechanical properties.

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“…4 However, depending on the food composition and the interaction force between the polymer matrix and the antimicrobial compound, the migration will vary. Vartiainen et al 5 showed that overall migration from LDPE film containing 0.2% imazalil were 2 and <1 mg/dm 2 into 3% acetic acid and 10% ethanol, respectively.…”

Section: Introductionmentioning

confidence: 98%

Development and evaluation of an edible antimicrobial film based on yam starch and chitosan

Durango

Soares

Benevides

et al. 2006

Packag. Technol. Sci.

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Edible antimicrobial films are an innovation within the biodegradable active packaging concept. They have been developed in order to reduce and/or inhibit the growth of microorganisms on the surface of foods. This study developed an edible antimicrobial film based on yam starch (Dioscorea alata) and chitosan and investigated its antimicrobial efficiency on Salmonella enteritidis. A solution of yam starch (4%) and glycerol (2%) was gelatinized in a viscoamilograph and chitosan added at concentrations of 1%, 3% and 5%. Films with and without chitosan were produced by the cast method. To evaluate the antimicrobial activity of the films, two suspensions of S. enteritidis were used in BHI medium, corresponding to counts of 2 ¥ 10 8 and 1.1 ¥ 10 6 CFU/ml. The suspensions (50 ml) were poured into flasks. The films were cut into 5 ¥ 5 and 5 ¥ 10 cm rectangles to be used at ratios of 1 : 1 (1 cm 2 /ml microorganism suspension) and 2 : 1 (2 cm 2 /ml). The film 30 mm thick on average. As a control, pure chitosan at an amount corresponding to that contained in the 3% and 5% films (5 ¥ 10 cm) was added to flasks containing the microorganism suspension. Also, flasks containing only a suspension of S. enteritidis were used as control. The suspensions, in flasks, were kept at 37°C in a waterbath with agitation. Suspension aliquots were removed every hour for reading the optic density (OD 595 ) and plating onto PCA medium. The results showed that chitosan has a bactericidal effect upon S. enteritidis. Films treated with chitosan at different concentrations showed similar antimicrobial efficiency, in addition to being dependent on diffusion. The chitosan-treated films caused a reduction of one to two log cycles in the number of microorganisms, whereas the pure chitosan presented a reduction of four to six log cycles compared with the control and starch film. The films showed good flexibility.

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Antimicrobial and Barrier Properties of LDPE Films Containing Imazalil and EDTA

Cited by 24 publications

References 14 publications

Essential Oils and Their Principal Constituents as Antimicrobial Agents for Synthetic Packaging Films

Essential Oils and Their Principal Constituents as Antimicrobial Agents for Synthetic Packaging Films

Melt Production and Antimicrobial Efficiency of Low-Density Polyethylene (LDPE)-Silver Nanocomposite Film

Development and evaluation of an edible antimicrobial film based on yam starch and chitosan

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