Synthesis of Polylactic Acid Initiated through Biobased Antioxidants: Towards Intrinsically Active Food Packaging

Synthesis of Polylactic Acid Initiated through Biobased Antioxidants: Towards Intrinsically Active Food Packaging

Polylactide (PLA)-based polymers, functionalized with biobased antioxidants, were synthesized, to develop an intrinsically active, biobased and potentially biodegradable material for food packaging applications. To achieve this result, phenolic antioxidants were exploited as initiators in the ring o...

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Main Authors: Marco Aldo Ortenzi, Stefano Gazzotti, Begonya Marcos Muntal, Stefano Antenucci, Stefano Camazzola, Luciano Piergiovanni, Hermes Farina, Giuseppe Di Silvestro, Luisella Verotta
Format: Article
Language:English
Published: MDPI AG 2020-05-01
Series:Polymers
Subjects:
polylactic acid
phenolic antioxidant
vanillyl alcohol
active food packaging
salami
shelf life
Online Access:https://www.mdpi.com/2073-4360/12/5/1183
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spelling doaj-8278860ed08d4184b3e5a5efec79f5fa2020-11-25T03:26:54ZengMDPI AGPolymers2073-43602020-05-01121183118310.3390/polym12051183Synthesis of Polylactic Acid Initiated through Biobased Antioxidants: Towards Intrinsically Active Food PackagingMarco Aldo Ortenzi0Stefano Gazzotti1Begonya Marcos Muntal2Stefano Antenucci3Stefano Camazzola4Luciano Piergiovanni5Hermes Farina6Giuseppe Di Silvestro7Luisella Verotta8Department of Chemistry, University of Milan, Via Golgi 19, 20133 Milan, ItalyDepartment of Chemistry, University of Milan, Via Golgi 19, 20133 Milan, ItalyIRTA, Food Technology, Finca Camps i Amet s/n, 17121 Monells, SpainDepartment of Chemistry, University of Milan, Via Golgi 19, 20133 Milan, ItalyDepartment of Chemistry, University of Milan, Via Golgi 19, 20133 Milan, ItalyCRC Materiali Polimerici (LaMPo), Department of Chemistry, University of Milan, Via Golgi 19, 20133 Milan, ItalyDepartment of Chemistry, University of Milan, Via Golgi 19, 20133 Milan, ItalyDepartment of Chemistry, University of Milan, Via Golgi 19, 20133 Milan, ItalyDepartment of Environmental Science and Policy, via Celoria 2, University of Milan, 20133 Milan, ItalyPolylactide (PLA)-based polymers, functionalized with biobased antioxidants, were synthesized, to develop an intrinsically active, biobased and potentially biodegradable material for food packaging applications. To achieve this result, phenolic antioxidants were exploited as initiators in the ring opening polymerization of l-lactide. The molecular weight, thermal properties and in vitro radical scavenging activity of the polymers obtained were compared with the ones of a PLA Natureworks 4043D, commonly used for flexible food packaging applications. The most promising synthesized polymer, bearing vanillyl alcohol as initiator (PLA-VA), was evaluated for active food packaging applications. Packaging with PLA-VA films reduced color and fat oxidation of salami during its shelf life.https://www.mdpi.com/2073-4360/12/5/1183polylactic acidphenolic antioxidantvanillyl alcoholactive food packagingsalamishelf life
collection DOAJ
language English
format Article
sources DOAJ
author Marco Aldo Ortenzi
Stefano Gazzotti
Begonya Marcos Muntal
Stefano Antenucci
Stefano Camazzola
Luciano Piergiovanni
Hermes Farina
Giuseppe Di Silvestro
Luisella Verotta
spellingShingle Marco Aldo Ortenzi
Stefano Gazzotti
Begonya Marcos Muntal
Stefano Antenucci
Stefano Camazzola
Luciano Piergiovanni
Hermes Farina
Giuseppe Di Silvestro
Luisella Verotta
Synthesis of Polylactic Acid Initiated through Biobased Antioxidants: Towards Intrinsically Active Food Packaging
Polymers
polylactic acid
phenolic antioxidant
vanillyl alcohol
active food packaging
salami
shelf life
author_facet Marco Aldo Ortenzi
Stefano Gazzotti
Begonya Marcos Muntal
Stefano Antenucci
Stefano Camazzola
Luciano Piergiovanni
Hermes Farina
Giuseppe Di Silvestro
Luisella Verotta
author_sort Marco Aldo Ortenzi
title Synthesis of Polylactic Acid Initiated through Biobased Antioxidants: Towards Intrinsically Active Food Packaging
title_short Synthesis of Polylactic Acid Initiated through Biobased Antioxidants: Towards Intrinsically Active Food Packaging
title_full Synthesis of Polylactic Acid Initiated through Biobased Antioxidants: Towards Intrinsically Active Food Packaging
title_fullStr Synthesis of Polylactic Acid Initiated through Biobased Antioxidants: Towards Intrinsically Active Food Packaging
title_full_unstemmed Synthesis of Polylactic Acid Initiated through Biobased Antioxidants: Towards Intrinsically Active Food Packaging
title_sort synthesis of polylactic acid initiated through biobased antioxidants: towards intrinsically active food packaging
publisher MDPI AG
series Polymers
issn 2073-4360
publishDate 2020-05-01
description Polylactide (PLA)-based polymers, functionalized with biobased antioxidants, were synthesized, to develop an intrinsically active, biobased and potentially biodegradable material for food packaging applications. To achieve this result, phenolic antioxidants were exploited as initiators in the ring opening polymerization of l-lactide. The molecular weight, thermal properties and in vitro radical scavenging activity of the polymers obtained were compared with the ones of a PLA Natureworks 4043D, commonly used for flexible food packaging applications. The most promising synthesized polymer, bearing vanillyl alcohol as initiator (PLA-VA), was evaluated for active food packaging applications. Packaging with PLA-VA films reduced color and fat oxidation of salami during its shelf life.
topic polylactic acid
phenolic antioxidant
vanillyl alcohol
active food packaging
salami
shelf life
url https://www.mdpi.com/2073-4360/12/5/1183
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