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Rajendran DS, Venkataraman S, Jha SK, Chakrabarty D, Kumar VV. A review on bio-based polymer polylactic acid potential on sustainable food packaging. Food Sci Biotechnol 2024; 33:1759-1788. [PMID: 38752115 PMCID: PMC11091039 DOI: 10.1007/s10068-024-01543-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2023] [Revised: 01/31/2024] [Accepted: 02/05/2024] [Indexed: 05/18/2024] Open
Abstract
Poly(lactic acid) (PLA) stands as a compelling alternative to conventional plastic-based packaging, signifying a notable shift toward sustainable material utilization. This comprehensive analysis illuminates the manifold applications of PLA composites within the realm of the food industry, emphasizing its pivotal role in food packaging and preservation. Noteworthy attributes of PLA composites with phenolic active compounds (phenolic acid and aldehyde, terpenes, carotenoid, and so on) include robust antimicrobial and antioxidant properties, significantly enhancing its capability to bolster adherence to stringent food safety standards. The incorporation of microbial and synthetic biopolymers, polysaccharides, oligosaccharides, oils, proteins and peptides to PLA in packaging solutions arises from its inherent non-toxicity and outstanding mechanical as well as thermal resilience. Functioning as a proficient film producer, PLA constructs an ideal preservation environment by merging optical and permeability traits. Esteemed as a pioneer in environmentally mindful packaging, PLA diminishes ecological footprints owing to its innate biodegradability. Primarily, the adoption of PLA extends the shelf life of products and encourages an eco-centric approach, marking a significant stride toward the food industry's embrace of sustainable packaging methodologies. Graphical abstract
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Affiliation(s)
- Devi Sri Rajendran
- Integrated Bioprocessing Laboratory, Department of Biotechnology, School of Bioengineering, Faculty of Engineering and Technology, SRM Institute of Science and Technology (SRM IST), Chengalpattu District, Kattankulathur, Tamil Nadu 603203 India
| | - Swethaa Venkataraman
- Integrated Bioprocessing Laboratory, Department of Biotechnology, School of Bioengineering, Faculty of Engineering and Technology, SRM Institute of Science and Technology (SRM IST), Chengalpattu District, Kattankulathur, Tamil Nadu 603203 India
| | - Satyendra Kumar Jha
- Integrated Bioprocessing Laboratory, Department of Biotechnology, School of Bioengineering, Faculty of Engineering and Technology, SRM Institute of Science and Technology (SRM IST), Chengalpattu District, Kattankulathur, Tamil Nadu 603203 India
| | - Disha Chakrabarty
- Integrated Bioprocessing Laboratory, Department of Biotechnology, School of Bioengineering, Faculty of Engineering and Technology, SRM Institute of Science and Technology (SRM IST), Chengalpattu District, Kattankulathur, Tamil Nadu 603203 India
| | - Vaidyanathan Vinoth Kumar
- Integrated Bioprocessing Laboratory, Department of Biotechnology, School of Bioengineering, Faculty of Engineering and Technology, SRM Institute of Science and Technology (SRM IST), Chengalpattu District, Kattankulathur, Tamil Nadu 603203 India
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Moldovan A, Cuc S, Prodan D, Rusu M, Popa D, Taut AC, Petean I, Bomboş D, Doukeh R, Nemes O. Development and Characterization of Polylactic Acid (PLA)-Based Nanocomposites Used for Food Packaging. Polymers (Basel) 2023; 15:2855. [PMID: 37447500 DOI: 10.3390/polym15132855] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2023] [Revised: 06/13/2023] [Accepted: 06/26/2023] [Indexed: 07/15/2023] Open
Abstract
The present study is focused on polylactic acid (PLA) blending with bio nanoadditives, such as Tonsil® (clay) and Aerosil®, to obtain nanocomposites for a new generation of food packaging. The basic composition was enhanced using Sorbitan oleate (E494) and Proviplast as plasticizers, increasing the composite samples' stability and their mechanical strength. Four mixtures were prepared: S1 with Tonsil®; S2 with Aerosil®; S3 with Aerosil® + Proviplast; and S4 with Sabosorb. They were complexly characterized by FT-IR spectroscopy, differential scanning calorimetry, mechanical tests on different temperatures, and absorption of the saline solution. FTIR shows a proper embedding of the filler component into the polymer matrix and DSC presents a good stability at the living body temperature for all prepared samples. Micro and nanostructural aspects were evidenced by SEM and AFM microscopy, revealing that S3 has the most compact and uniform filler distribution and S4 has the most irregular one. Thus, S3 evidenced the best diametral tensile strength and S4 evidenced the weakest values. All samples present the best bending strength at 18 °C and fair values at 4 °C, with the best values being obtained for the S1 sample and the worst for S4. The lack of mechanical strength of the S4 sample is compensated by its best resistance at liquid penetration, while S1 is more affected by the liquid infiltrations. Finally, results show that PLA composites are suitable for biodegradable and disposable food packages, and the desired properties could be achieved by proper adjustment of the filler proportions.
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Affiliation(s)
- Andrei Moldovan
- Department Environmental Engineering and Sustainable Development Entrepreneurship, Technical University of Cluj-Napoca, 400641 Cluj-Napoca, Romania
| | - Stanca Cuc
- "Raluca Ripan" Institute of Research in Chemistry, "Babes Bolyai" University, 400294 Cluj-Napoca, Romania
| | - Doina Prodan
- "Raluca Ripan" Institute of Research in Chemistry, "Babes Bolyai" University, 400294 Cluj-Napoca, Romania
| | - Mircea Rusu
- Lamar Auto Services S.R.L. Corpadea, 407038 Cluj-Napoca, Romania
| | - Dorin Popa
- Faculty of Exact Sciences and Engineering, "1 Decembrie 1918" University of Alba Iulia, 510009 Alba Iulia, Romania
| | - Adrian Catalin Taut
- Applied Electronics Department, Technical University of Cluj-Napoca, 400027 Cluj-Napoca, Romania
| | - Ioan Petean
- Faculty of Chemistry and Chemical Engineering, "Babes-Bolyai" University, 11 Arany Janos Street, 400084 Cluj-Napoca, Romania
| | - Dorin Bomboş
- S.C. Medacril S.R.L., 8 Carpați Street, 551022 Mediaş, Romania
- Faculty of Petroleum Refining and Petrochemistry, Petroleum-Gas University of Ploiesti, 39 Bucharest Blvd., 100680 Ploiesti, Romania
| | - Rami Doukeh
- Faculty of Petroleum Refining and Petrochemistry, Petroleum-Gas University of Ploiesti, 39 Bucharest Blvd., 100680 Ploiesti, Romania
| | - Ovidiu Nemes
- Department Environmental Engineering and Sustainable Development Entrepreneurship, Technical University of Cluj-Napoca, 400641 Cluj-Napoca, Romania
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Purcea Lopes PM, Moldovan D, Fechete R, Mare L, Barbu-Tudoran L, Sechel N, Popescu V. Characterization of a Graphene Oxide-Reinforced Whey Hydrogel as an Eco-Friendly Absorbent for Food Packaging. Gels 2023; 9:gels9040298. [PMID: 37102911 PMCID: PMC10138084 DOI: 10.3390/gels9040298] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2023] [Revised: 03/21/2023] [Accepted: 03/28/2023] [Indexed: 04/05/2023] Open
Abstract
This study presents a structural analysis of a whey and gelatin-based hydrogel reinforced with graphene oxide (GO) by ultraviolet and visible (UV-VIS) spectroscopy, Fourier transform infrared spectroscopy (FT-IR), and X-ray diffraction (XRD). The results revealed barrier properties in the UV range for the reference sample (containing no graphene oxide) and the samples with minimal GO content of 0.66×10−3% and 3.33×10−3%, respectively, in the UV-VIS and near-IR range; for the samples with higher GO content, this was 6.67×10−3% and 33.33×10−3% as an effect of the introduction of GO into the hydrogel composite. The changes in the position of diffraction angles 2θ from the X-ray diffraction patterns of GO-reinforced hydrogels indicated a decrease in the distances between the turns of the protein helix structure due to the GO cross-linking effect. Transmission electron spectroscopy (TEM) was used for GO, whilst scanning electron microscopy (SEM) was used for the composite characterization. A novel technique for investigating the swelling rate was presented by performing electrical conductivity measurements, the results of which led to the identification of a potential hydrogel with sensor properties.
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Affiliation(s)
- Pompilia Mioara Purcea Lopes
- Physics and Chemistry Department, Technical University of Cluj-Napoca, 28 Memorandumului Str., 400114 Cluj-Napoca, Romania
| | - Dumitrita Moldovan
- Physics and Chemistry Department, Technical University of Cluj-Napoca, 28 Memorandumului Str., 400114 Cluj-Napoca, Romania
| | - Radu Fechete
- Physics and Chemistry Department, Technical University of Cluj-Napoca, 28 Memorandumului Str., 400114 Cluj-Napoca, Romania
| | - Liviu Mare
- Physics and Chemistry Department, Technical University of Cluj-Napoca, 28 Memorandumului Str., 400114 Cluj-Napoca, Romania
| | - Lucian Barbu-Tudoran
- Electron Microscopy Center, Faculty of Biology and Geology, Babes-Bolyai University of Cluj-Napoca, 1 M. Kogalniceanu Street, 400347 Cluj-Napoca, Romania
| | - Niculina Sechel
- Materials Science and Engineering Department, Technical University of Cluj-Napoca, 103-105 Muncii Avenue, 400641 Cluj-Napoca, Romania
| | - Violeta Popescu
- Physics and Chemistry Department, Technical University of Cluj-Napoca, 28 Memorandumului Str., 400114 Cluj-Napoca, Romania
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