Properties of antimicrobial plastics containing traditional food preservatives

Jari Vartiainen (Corresponding Author), Eija Skyttä, Jouni Enqvist, Raija Ahvenainen

Research output: Contribution to journalArticleScientificpeer-review

34 Citations (Scopus)

Abstract

Traditional food preservatives, sodium benzoate, sodium nitrite, potassium sorbate and sodium lactate, were incorporated into synthetic plastics, low‐density polyethylene (LDPE), poly(maleic acid‐co‐olefine), polystyrene (PS) and polyethylene terephthalate (PET), aimed at producing antimicrobial packaging material for foodstuffs. The study was undertaken on plaques (thickness 2 mm) and films (thickness 70–120 µm), whose antimicrobial test results clearly differed. Plaques containing 15% sodium nitrite inhibited both Aspergillus niger and Bacillus subtilis, whereas the same concentration of sodium benzoate and potassium sorbate had activity only against B. subtilis. Sodium lactate‐containing samples did not have any antimicrobial activity and none of the samples inhibited Escherichia coli. Antimicrobial substances added into PS and PET produced the strongest activities; however, due to the brittle structure of these materials, they were not tested further. Thus, more thorough tests for antimicrobial activity, migration and oxygen and water vapour permeability were carried out using LDPE films with 2.5–15% sodium benzoate and sodium nitrite. The effects of both substances on permeability properties were negligible. Although the total migration into food simulants measured from the films in many cases exceeded the limit value of 10 mg/dm2, no antimicrobial activity was observed.
Original languageEnglish
Pages (from-to)223-229
Number of pages7
JournalPackaging Technology and Science
Volume16
Issue number6
DOIs
Publication statusPublished - 2003
MoE publication typeA1 Journal article-refereed

Fingerprint

Food preservatives
Food Preservatives
Sodium Benzoate
Sodium Nitrite
Sorbic Acid
Polyethylene Terephthalates
Polystyrenes
Sodium
Polyethylene
Plastics
Sodium Lactate
Potassium sorbate
Packaging materials
Aspergillus
Steam
Bacilli
Escherichia coli
Film thickness
Polyethylene terephthalates
Oxygen

Keywords

  • plastics
  • antimicrobial properties
  • food packaging

Cite this

Vartiainen, Jari ; Skyttä, Eija ; Enqvist, Jouni ; Ahvenainen, Raija. / Properties of antimicrobial plastics containing traditional food preservatives. In: Packaging Technology and Science. 2003 ; Vol. 16, No. 6. pp. 223-229.
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title = "Properties of antimicrobial plastics containing traditional food preservatives",
abstract = "Traditional food preservatives, sodium benzoate, sodium nitrite, potassium sorbate and sodium lactate, were incorporated into synthetic plastics, low‐density polyethylene (LDPE), poly(maleic acid‐co‐olefine), polystyrene (PS) and polyethylene terephthalate (PET), aimed at producing antimicrobial packaging material for foodstuffs. The study was undertaken on plaques (thickness 2 mm) and films (thickness 70–120 µm), whose antimicrobial test results clearly differed. Plaques containing 15{\%} sodium nitrite inhibited both Aspergillus niger and Bacillus subtilis, whereas the same concentration of sodium benzoate and potassium sorbate had activity only against B. subtilis. Sodium lactate‐containing samples did not have any antimicrobial activity and none of the samples inhibited Escherichia coli. Antimicrobial substances added into PS and PET produced the strongest activities; however, due to the brittle structure of these materials, they were not tested further. Thus, more thorough tests for antimicrobial activity, migration and oxygen and water vapour permeability were carried out using LDPE films with 2.5–15{\%} sodium benzoate and sodium nitrite. The effects of both substances on permeability properties were negligible. Although the total migration into food simulants measured from the films in many cases exceeded the limit value of 10 mg/dm2, no antimicrobial activity was observed.",
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Vartiainen, J, Skyttä, E, Enqvist, J & Ahvenainen, R 2003, 'Properties of antimicrobial plastics containing traditional food preservatives', Packaging Technology and Science, vol. 16, no. 6, pp. 223-229. https://doi.org/10.1002/pts.629

Properties of antimicrobial plastics containing traditional food preservatives. / Vartiainen, Jari (Corresponding Author); Skyttä, Eija; Enqvist, Jouni; Ahvenainen, Raija.

In: Packaging Technology and Science, Vol. 16, No. 6, 2003, p. 223-229.

Research output: Contribution to journalArticleScientificpeer-review

TY - JOUR

T1 - Properties of antimicrobial plastics containing traditional food preservatives

AU - Vartiainen, Jari

AU - Skyttä, Eija

AU - Enqvist, Jouni

AU - Ahvenainen, Raija

PY - 2003

Y1 - 2003

N2 - Traditional food preservatives, sodium benzoate, sodium nitrite, potassium sorbate and sodium lactate, were incorporated into synthetic plastics, low‐density polyethylene (LDPE), poly(maleic acid‐co‐olefine), polystyrene (PS) and polyethylene terephthalate (PET), aimed at producing antimicrobial packaging material for foodstuffs. The study was undertaken on plaques (thickness 2 mm) and films (thickness 70–120 µm), whose antimicrobial test results clearly differed. Plaques containing 15% sodium nitrite inhibited both Aspergillus niger and Bacillus subtilis, whereas the same concentration of sodium benzoate and potassium sorbate had activity only against B. subtilis. Sodium lactate‐containing samples did not have any antimicrobial activity and none of the samples inhibited Escherichia coli. Antimicrobial substances added into PS and PET produced the strongest activities; however, due to the brittle structure of these materials, they were not tested further. Thus, more thorough tests for antimicrobial activity, migration and oxygen and water vapour permeability were carried out using LDPE films with 2.5–15% sodium benzoate and sodium nitrite. The effects of both substances on permeability properties were negligible. Although the total migration into food simulants measured from the films in many cases exceeded the limit value of 10 mg/dm2, no antimicrobial activity was observed.

AB - Traditional food preservatives, sodium benzoate, sodium nitrite, potassium sorbate and sodium lactate, were incorporated into synthetic plastics, low‐density polyethylene (LDPE), poly(maleic acid‐co‐olefine), polystyrene (PS) and polyethylene terephthalate (PET), aimed at producing antimicrobial packaging material for foodstuffs. The study was undertaken on plaques (thickness 2 mm) and films (thickness 70–120 µm), whose antimicrobial test results clearly differed. Plaques containing 15% sodium nitrite inhibited both Aspergillus niger and Bacillus subtilis, whereas the same concentration of sodium benzoate and potassium sorbate had activity only against B. subtilis. Sodium lactate‐containing samples did not have any antimicrobial activity and none of the samples inhibited Escherichia coli. Antimicrobial substances added into PS and PET produced the strongest activities; however, due to the brittle structure of these materials, they were not tested further. Thus, more thorough tests for antimicrobial activity, migration and oxygen and water vapour permeability were carried out using LDPE films with 2.5–15% sodium benzoate and sodium nitrite. The effects of both substances on permeability properties were negligible. Although the total migration into food simulants measured from the films in many cases exceeded the limit value of 10 mg/dm2, no antimicrobial activity was observed.

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