Oxidation Strength of PLA Filled with Algal Biomass and Rosemary Extract Powders for Food-Safe Handling.
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| Title: | Oxidation Strength of PLA Filled with Algal Biomass and Rosemary Extract Powders for Food-Safe Handling. |
|---|---|
| Authors: | Zaharescu, Traian1 (AUTHOR), Bumbac, Marius2 (AUTHOR) aurora.craciun@365.univ-ovidius.ro, Nicolescu, Cristina Mihaela3 (AUTHOR) radu.mirea@comoti.ro, Craciun, Aurora4 (AUTHOR), Mirea, Radu5 (AUTHOR) |
| Source: | Polymers (20734360). Feb2026, Vol. 18 Issue 4, p504. 22p. |
| Subjects: | Polylactic acid, Rosemary, Biopolymers, Food handling, Waste recycling |
| Abstract: | Poly(lactic acid) (PLA) is widely used in food-contact applications due to its bio-based origin, compostability, and transparency; however, its limited resistance to thermo-oxidative degradation remains a challenge for applications involving repeated thermal exposure. The moderate but repetitive heating conditions commonly encountered during food use and pre-recycling stages were analyzed for the samples filled with algal biomass and rosemary extract, additives accepted for use in the food industry. In this context, the present study introduces a comparative and application-driven approach by evaluating the effect of food-grade fillers—rosemary extract, spirulina biomass, and kelp biomass—incorporated at low loadings (0.5–3 wt%) on the thermal and oxidative behavior of PLA subjected to repeated heating at 80 °C. The presented results show algal biomasses as multifunctional fillers and benchmark their performance against a well-established natural extract. By combining DSC, FTIR, and chemiluminescence analyses, the study aims to clarify whether such bio-fillers act as stabilizing or destabilizing factors under realistic service-life thermal stress. This strategy provides insight into the suitability of algae-based fillers for food-contact PLA materials from both performance and recyclability perspectives. [ABSTRACT FROM AUTHOR] |
| Copyright of Polymers (20734360) is the property of MDPI and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) | |
| Database: | Engineering Source |
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| Header | DbId: egs DbLabel: Engineering Source An: 192034336 AccessLevel: 6 PubType: Academic Journal PubTypeId: academicJournal PreciseRelevancyScore: 0 |
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| Items | – Name: Title Label: Title Group: Ti Data: Oxidation Strength of PLA Filled with Algal Biomass and Rosemary Extract Powders for Food-Safe Handling. – Name: Author Label: Authors Group: Au Data: <searchLink fieldCode="AR" term="%22Zaharescu%2C+Traian%22">Zaharescu, Traian</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Bumbac%2C+Marius%22">Bumbac, Marius</searchLink><relatesTo>2</relatesTo> (AUTHOR)<i> aurora.craciun@365.univ-ovidius.ro</i><br /><searchLink fieldCode="AR" term="%22Nicolescu%2C+Cristina+Mihaela%22">Nicolescu, Cristina Mihaela</searchLink><relatesTo>3</relatesTo> (AUTHOR)<i> radu.mirea@comoti.ro</i><br /><searchLink fieldCode="AR" term="%22Craciun%2C+Aurora%22">Craciun, Aurora</searchLink><relatesTo>4</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Mirea%2C+Radu%22">Mirea, Radu</searchLink><relatesTo>5</relatesTo> (AUTHOR) – Name: TitleSource Label: Source Group: Src Data: <searchLink fieldCode="JN" term="%22Polymers+%2820734360%29%22">Polymers (20734360)</searchLink>. Feb2026, Vol. 18 Issue 4, p504. 22p. – Name: Subject Label: Subjects Group: Su Data: <searchLink fieldCode="DE" term="%22Polylactic+acid%22">Polylactic acid</searchLink><br /><searchLink fieldCode="DE" term="%22Rosemary%22">Rosemary</searchLink><br /><searchLink fieldCode="DE" term="%22Biopolymers%22">Biopolymers</searchLink><br /><searchLink fieldCode="DE" term="%22Food+handling%22">Food handling</searchLink><br /><searchLink fieldCode="DE" term="%22Waste+recycling%22">Waste recycling</searchLink> – Name: Abstract Label: Abstract Group: Ab Data: Poly(lactic acid) (PLA) is widely used in food-contact applications due to its bio-based origin, compostability, and transparency; however, its limited resistance to thermo-oxidative degradation remains a challenge for applications involving repeated thermal exposure. The moderate but repetitive heating conditions commonly encountered during food use and pre-recycling stages were analyzed for the samples filled with algal biomass and rosemary extract, additives accepted for use in the food industry. In this context, the present study introduces a comparative and application-driven approach by evaluating the effect of food-grade fillers—rosemary extract, spirulina biomass, and kelp biomass—incorporated at low loadings (0.5–3 wt%) on the thermal and oxidative behavior of PLA subjected to repeated heating at 80 °C. The presented results show algal biomasses as multifunctional fillers and benchmark their performance against a well-established natural extract. By combining DSC, FTIR, and chemiluminescence analyses, the study aims to clarify whether such bio-fillers act as stabilizing or destabilizing factors under realistic service-life thermal stress. This strategy provides insight into the suitability of algae-based fillers for food-contact PLA materials from both performance and recyclability perspectives. [ABSTRACT FROM AUTHOR] – Name: AbstractSuppliedCopyright Label: Group: Ab Data: <i>Copyright of Polymers (20734360) is the property of MDPI and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.) |
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| RecordInfo | BibRecord: BibEntity: Identifiers: – Type: doi Value: 10.3390/polym18040504 Languages: – Code: eng Text: English PhysicalDescription: Pagination: PageCount: 22 StartPage: 504 Subjects: – SubjectFull: Polylactic acid Type: general – SubjectFull: Rosemary Type: general – SubjectFull: Biopolymers Type: general – SubjectFull: Food handling Type: general – SubjectFull: Waste recycling Type: general Titles: – TitleFull: Oxidation Strength of PLA Filled with Algal Biomass and Rosemary Extract Powders for Food-Safe Handling. Type: main BibRelationships: HasContributorRelationships: – PersonEntity: Name: NameFull: Zaharescu, Traian – PersonEntity: Name: NameFull: Bumbac, Marius – PersonEntity: Name: NameFull: Nicolescu, Cristina Mihaela – PersonEntity: Name: NameFull: Craciun, Aurora – PersonEntity: Name: NameFull: Mirea, Radu IsPartOfRelationships: – BibEntity: Dates: – D: 15 M: 02 Text: Feb2026 Type: published Y: 2026 Identifiers: – Type: issn-print Value: 20734360 Numbering: – Type: volume Value: 18 – Type: issue Value: 4 Titles: – TitleFull: Polymers (20734360) Type: main |
| ResultId | 1 |
