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Hararak B, Wijaranakul P, Wanmolee W, Kraithong W, Keeratipinit K, Kaewket S, Winotapun C, Rungseesantivanon W. Self-Formation of Lignin Particles Through Melt-Extrusion for Active Biodegradable Food Packaging. ACS OMEGA 2024; 9:24346-24355. [PMID: 38882124 PMCID: PMC11171092 DOI: 10.1021/acsomega.3c10113] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/18/2023] [Revised: 05/20/2024] [Accepted: 05/23/2024] [Indexed: 06/18/2024]
Abstract
This study presents a method for the self-formation of lignin particles within a polylactic acid (PLA) matrix during melt-extrusion, eliminating the need for separation and drying steps typically associated with submicro-size lignin particles. This method effectively mitigates the problem of agglomeration often associated with the drying step. Softwood kraft lignin, guaiacyl lignin (GL-lignin), was dissolved in low-molecular-weight poly(ethylene glycol) (PEG) and was introduced into a twin-screw extruder using a liquid feeder. Lignin particles within a particle size range of 200-500 nm were observed in the extrudate of the PLA/PEG/GL-lignin composites. PLA/PEG/GL-lignin composite films were produced through blown film extrusion. These composite films demonstrated superior ultraviolet (UV)-barrier and antioxidant properties compared to neat PLA films, with optical and mechanical characteristics comparable to those of neat PLA. Moreover, migration values of the composite films in various food simulants were below regulatory limits, suggesting their potential for food packaging applications. This self-formation process offers a promising approach for utilizing lignin for PLA applications.
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Affiliation(s)
- Bongkot Hararak
- National Metal and Materials Technology Center (MTEC), National Science and Technology Development Agency, Khlong-Nueng, Khlong Luang, Pathumthani 12120, Thailand
| | - Pawarisa Wijaranakul
- National Metal and Materials Technology Center (MTEC), National Science and Technology Development Agency, Khlong-Nueng, Khlong Luang, Pathumthani 12120, Thailand
| | - Wanwitoo Wanmolee
- National Nanotechnology Center (NANOTEC), National Science and Technology Development Agency, Khlong-Nueng, Khlong Luang, Pathumthani 12120, Thailand
| | - Wasawat Kraithong
- National Nanotechnology Center (NANOTEC), National Science and Technology Development Agency, Khlong-Nueng, Khlong Luang, Pathumthani 12120, Thailand
| | - Kawin Keeratipinit
- National Metal and Materials Technology Center (MTEC), National Science and Technology Development Agency, Khlong-Nueng, Khlong Luang, Pathumthani 12120, Thailand
| | - Sanya Kaewket
- National Metal and Materials Technology Center (MTEC), National Science and Technology Development Agency, Khlong-Nueng, Khlong Luang, Pathumthani 12120, Thailand
| | - Charinee Winotapun
- National Metal and Materials Technology Center (MTEC), National Science and Technology Development Agency, Khlong-Nueng, Khlong Luang, Pathumthani 12120, Thailand
| | - Wuttipong Rungseesantivanon
- National Metal and Materials Technology Center (MTEC), National Science and Technology Development Agency, Khlong-Nueng, Khlong Luang, Pathumthani 12120, Thailand
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Kargarzadeh H, Kobylińska A, Antos-Bielska M, Krzyżowska M, Gałęski A. Exploring the potential of lignin nanoparticles in enhancing the mechanical, thermal, and bioactive properties of poly (butylene adipate-co-terephthalate). Int J Biol Macromol 2024; 262:129880. [PMID: 38307427 DOI: 10.1016/j.ijbiomac.2024.129880] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2023] [Revised: 01/29/2024] [Accepted: 01/30/2024] [Indexed: 02/04/2024]
Abstract
The preparation and characterization of lignin nanoparticles (LNPs) were described. LNPs were produced via the precipitation technique. Nanocomposites of LNPs with poly (butylene adipate-co-terephthalate) (PBAT) were prepared by melt mixing with various concentrations up to 6 wt% of LNPs. The assessment of the effects of LNP addition on the mechanical, thermal, morphological, cytotoxicity, antioxidant, antibacterial, and antiviral properties of nanocomposites was carefully performed. The addition of LNPs to PBAT enhances the thermal stability of the nanocomposites. The antioxidant effect of LNPs on PBAT increased with increasing filler content. LNPs showed higher efficiency as antioxidant agents than lignin particles (LP). The tensile modulus increased by 20 % for the nanocomposites with 6 % LNPs in comparison with neat PBAT. The crystallization peak temperature of PBAT was 80 °C, which increased to 104.6 °C with the addition of 6 wt% of LNPs, suggesting their strong nucleation activity. Antibacterial tests demonstrated the bacteriostatic activities of LNP, LP, and nanocomposites. Both LP and LNP showed considerable antiviral activity against herpes simplex virus type 1 and human coronavirus 229e. The antiviral activity of LNP was concentration-dependent. The findings suggest that LNP is a promising bio-additive for PBAT and can enhance its properties for various applications, including food packaging.
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Affiliation(s)
- Hanieh Kargarzadeh
- Centre of Molecular and Macromolecular Studies, Polish Academy of Sciences, Sienkiewicza 112, 90-363 Lodz, Poland.
| | - Agnieszka Kobylińska
- Department of Plant Ecophysiology, Faculty of Biology and Environmental Protection, University of Lodz, Banacha 12/16, 90-237 Lodz, Poland
| | - Małgorzata Antos-Bielska
- Department of Nanobiology and Biomaterials, Military Institute of Hygiene and Epidemiology, Kozielska 4, 01-163 Warsaw, Poland
| | - Małgorzata Krzyżowska
- Department of Nanobiology and Biomaterials, Military Institute of Hygiene and Epidemiology, Kozielska 4, 01-163 Warsaw, Poland
| | - Andrzej Gałęski
- Centre of Molecular and Macromolecular Studies, Polish Academy of Sciences, Sienkiewicza 112, 90-363 Lodz, Poland
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Worku LA, Tadesse MG, Bachheti A, Pandey DP, Chandel AK, Ewuntu AW, Bachheti RK. Experimental investigations on PVA/chitosan and PVA/chitin films for active food packaging using Oxytenanthera abyssinica lignin nanoparticles and its UV-shielding, antimicrobial, and antiradical effects. Int J Biol Macromol 2024; 254:127644. [PMID: 37879578 DOI: 10.1016/j.ijbiomac.2023.127644] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2023] [Revised: 10/13/2023] [Accepted: 10/22/2023] [Indexed: 10/27/2023]
Abstract
This study investigated the effect of adding lignin nanoparticles (LNPs) derived from Oxytenanthera abyssinica via alkali-acid nanoprecipitation method to polyvinyl alcohol/chitosan (PVA/CI) and polyvinyl alcohol/chitin (PVA/CH) films for the active food packaging applications. Adding LNPs at concentrations of 1 % and 3 % improved the films' thermal stability and mechanical properties. The lowest water solubility and moisture content were observed in PVA/CI/LNPs films. LNPs exhibited effective 2,2-diphenyl-1-picrylhydrazyl (DPPH) radical scavenging activities, with the highest values observed in PVA/CH/LNPS and PVA/CI/LNPS films with values of 87.47 and 88.74 % respectively. The addition of LNPs also improved the UV-blocking abilities of the films. PVA/CH/LNP3 and PVA/CI/LNP3 have the smallest percentage transmission values of 3.34 % and 0.86 % in the UV range. The overall migration of dietary stimulants was lower in PVA/CI/LNPS and PVA/CH/LNPS films compared to PVA film. Antibacterial tests demonstrated the inhibitory capacity of the synthesized biofilms against both gram-positive and negative bacterial species, with the highest inhibitory value of 26 mm. The study suggests that PVA/CH/LNPS and PVA/CI/LNPS films have potential applications as active food packaging materials and can be explored in other potential applications such as drug delivery, tissue engineering, wound healing, and slow-release urea fertilizer development.
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Affiliation(s)
- Limenew Abate Worku
- Department of Industrial Chemistry, Addis Ababa Science and Technology University, Addis Ababa, P.O. Box 16417, Ethiopia; Bioprocess and Biotechnology Center of Excellence, Addis Ababa Sciences and Technology University, P.O. Box-16417, Addis Ababa, Ethiopia
| | - Mesfin Getachew Tadesse
- Department of Industrial Chemistry, Addis Ababa Science and Technology University, Addis Ababa, P.O. Box 16417, Ethiopia; Bioprocess and Biotechnology Center of Excellence, Addis Ababa Sciences and Technology University, P.O. Box-16417, Addis Ababa, Ethiopia
| | - Archana Bachheti
- Department of Environment Science, Graphic Era (Deemed to be University), Dehradun 248002, Uttarakhand, India.
| | - D P Pandey
- Department of Chemistry Govt Degree College Dehradun Shahar, Suddhowala, Dehradun 248007, India
| | - Anuj Kumar Chandel
- Department of Biotechnology, Engineering School of Lorena (EEL), Estrada Municipal do Campinho, University of São Paulo (USP), Lorena 12602-810, São Paulo, Brazil.
| | - Asnake Waltenigus Ewuntu
- Department of Industrial Chemistry, Addis Ababa Science and Technology University, Addis Ababa, P.O. Box 16417, Ethiopia.
| | - Rakesh Kumar Bachheti
- Department of Industrial Chemistry, Addis Ababa Science and Technology University, Addis Ababa, P.O. Box 16417, Ethiopia; Department of Allied Sciences, Graphic Era Hill University, Society Area, Clement Town, Dehradun 248002, India.
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