Active Low-Density Polyethylene-Based Films by Incorporating α-Tocopherol in the Free State and Loaded in PLA Nanoparticles : A Comparative Study
In this work, alpha-tocopherol (α-TOC) was encapsulated in poly(lactic acid) nanoparticles (PLA NPs) and added to low-density polyethylene (LDPE) films with the aim of producing an active film for food packaging applications. PLA NPs loaded with α-TOC were produced through nanoprecipitation and dried using two methods (freeze-dryer and oven). LDPE-based films with final polymeric matrix concentrations of 10 and 20 g/kg were then produced through blow extrusion. The results showed that LDPE-based films loaded with α-TOC can be produced using blow extrusion, and a good distribution of PLA NPs can be obtained within the LDPE matrix as observed using scanning electron microscopy (SEM). The mechanical properties were affected by the incorporation of α-TOC and PLA NPs loaded with α-TOC, with the observation of a decrease in tensile strength and Young's Modulus values and an increase in elongation at break. Regarding water vapor permeability, the films showed a reduction in the values with the addition of α-TOC and PLA NPs loaded with α-TOC compared to the LDPE film (control). Films with α-TOC in the free state and loaded in PLA NPs showed antioxidant activity, but their behavior was affected by the encapsulation process.
| Medienart: |
E-Artikel |
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| Erscheinungsjahr: |
2024 |
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| Erschienen: |
2024 |
| Enthalten in: |
Zur Gesamtaufnahme - volume:13 |
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| Enthalten in: |
Foods (Basel, Switzerland) - 13(2024), 3 vom: 02. Feb. |
| Sprache: |
Englisch |
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| Beteiligte Personen: |
Azevedo, Ana G [VerfasserIn] |
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| Links: |
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| Themen: |
α-tocopherol |
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| Anmerkungen: |
Date Revised 12.02.2024 published: Electronic Citation Status PubMed-not-MEDLINE |
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| doi: |
10.3390/foods13030475 |
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| funding: |
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| Förderinstitution / Projekttitel: |
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| PPN (Katalog-ID): |
NLM368280993 |
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| 520 | |a In this work, alpha-tocopherol (α-TOC) was encapsulated in poly(lactic acid) nanoparticles (PLA NPs) and added to low-density polyethylene (LDPE) films with the aim of producing an active film for food packaging applications. PLA NPs loaded with α-TOC were produced through nanoprecipitation and dried using two methods (freeze-dryer and oven). LDPE-based films with final polymeric matrix concentrations of 10 and 20 g/kg were then produced through blow extrusion. The results showed that LDPE-based films loaded with α-TOC can be produced using blow extrusion, and a good distribution of PLA NPs can be obtained within the LDPE matrix as observed using scanning electron microscopy (SEM). The mechanical properties were affected by the incorporation of α-TOC and PLA NPs loaded with α-TOC, with the observation of a decrease in tensile strength and Young's Modulus values and an increase in elongation at break. Regarding water vapor permeability, the films showed a reduction in the values with the addition of α-TOC and PLA NPs loaded with α-TOC compared to the LDPE film (control). Films with α-TOC in the free state and loaded in PLA NPs showed antioxidant activity, but their behavior was affected by the encapsulation process | ||
| 650 | 4 | |a Journal Article | |
| 650 | 4 | |a active packaging | |
| 650 | 4 | |a biomaterial | |
| 650 | 4 | |a nanomaterial | |
| 650 | 4 | |a α-tocopherol | |
| 700 | 1 | |a Barros, Carolina |e verfasserin |4 aut | |
| 700 | 1 | |a Miranda, Sónia |e verfasserin |4 aut | |
| 700 | 1 | |a Machado, Ana V |e verfasserin |4 aut | |
| 700 | 1 | |a Carneiro, Olga S |e verfasserin |4 aut | |
| 700 | 1 | |a Silva, Bruno |e verfasserin |4 aut | |
| 700 | 1 | |a Andrade, Mariana A |e verfasserin |4 aut | |
| 700 | 1 | |a Vilarinho, Fernanda |e verfasserin |4 aut | |
| 700 | 1 | |a Saraiva, Margarida |e verfasserin |4 aut | |
| 700 | 1 | |a Sanches Silva, Ana |e verfasserin |4 aut | |
| 700 | 1 | |a Pastrana, Lorenzo M |e verfasserin |4 aut | |
| 700 | 1 | |a Cerqueira, Miguel A |e verfasserin |4 aut | |
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