Synthesis of Sodium Alginate–Silver Nanocomposites Using Plasma Activated Water and Cold Atmospheric Plasma Treatment
In this study, sodium alginate (SA)-based, eco-friendly nanocomposites films were synthesized for potential food packaging applications using silver nitrate (AgNO<sub>3</sub>) as the metal precursor, reactive nitrogen and oxygen species (RNOS) created within plasma activated water (PAW),...
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| Format: | Article |
| Language: | English |
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MDPI AG
2021-09-01
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| Series: | Nanomaterials |
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| Online Access: | https://www.mdpi.com/2079-4991/11/9/2306 |
| _version_ | 1797517865742499840 |
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| author | Nusrat Sharmin Chengheng Pang Izumi Sone James Leon Walsh Cecilia Górriz Fernández Morten Sivertsvik Estefanía Noriega Fernández |
| author_facet | Nusrat Sharmin Chengheng Pang Izumi Sone James Leon Walsh Cecilia Górriz Fernández Morten Sivertsvik Estefanía Noriega Fernández |
| author_sort | Nusrat Sharmin |
| collection | DOAJ |
| description | In this study, sodium alginate (SA)-based, eco-friendly nanocomposites films were synthesized for potential food packaging applications using silver nitrate (AgNO<sub>3</sub>) as the metal precursor, reactive nitrogen and oxygen species (RNOS) created within plasma activated water (PAW), or through cold plasma treatment (CP) as reducing agent and SA as stabilizing agent. The formation of silver nanoparticles (AgNPs) was confirmed via the absorption peaks observed between 440 and 450 nm in UV-vis spectroscopy. The tensile strength (TS) and tensile modulus (TM) of the nanocomposite films were significantly higher than those of the SA films. An increase in the TS was also observed as the AgNP concentration was increased from 1 to 5 mM. The storage modulus (G’) of the nanocomposite solution was higher than that of the SA solution. The synthesis of AgNPs resulted both in a higher solution viscosity and a more marked shear-thinning effect. The synthesized AgNPs showed antimicrobial activity against both Gram-positive (<i>Staphylococcus aureus</i>) and Gram-negative (<i>Escherichia coli</i>) bacteria. The AgNPs were spherical in shape with an average size of 22 nm. |
| first_indexed | 2024-03-10T07:22:10Z |
| format | Article |
| id | doaj.art-6c598c0478c5486ba317b7ef93075c31 |
| institution | Directory Open Access Journal |
| issn | 2079-4991 |
| language | English |
| last_indexed | 2024-03-10T07:22:10Z |
| publishDate | 2021-09-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Nanomaterials |
| spelling | doaj.art-6c598c0478c5486ba317b7ef93075c312023-11-22T14:30:31ZengMDPI AGNanomaterials2079-49912021-09-01119230610.3390/nano11092306Synthesis of Sodium Alginate–Silver Nanocomposites Using Plasma Activated Water and Cold Atmospheric Plasma TreatmentNusrat Sharmin0Chengheng Pang1Izumi Sone2James Leon Walsh3Cecilia Górriz Fernández4Morten Sivertsvik5Estefanía Noriega Fernández6Department of Food Safety and Quality, Nofima AS, Osloveien 1, 1430 Ås, NorwayDepartment of Chemical and Environmental Engineering, University of Nottingham Ningbo China, Ningbo 315100, ChinaDepartment of Processing Technology, Nofima AS, Richard Johnsens Gate 4, 4021 Stavanger, NorwayCentre for Plasma Microbiology, Department of Electrical Engineering & Electronics, University of Liverpool, Liverpool L69 3BX, UKIES Escultor Juan de Villanueva, N-634, s/n, 33519 Pola de Siero, SpainDepartment of Processing Technology, Nofima AS, Richard Johnsens Gate 4, 4021 Stavanger, NorwayDepartment of Processing Technology, Nofima AS, Richard Johnsens Gate 4, 4021 Stavanger, NorwayIn this study, sodium alginate (SA)-based, eco-friendly nanocomposites films were synthesized for potential food packaging applications using silver nitrate (AgNO<sub>3</sub>) as the metal precursor, reactive nitrogen and oxygen species (RNOS) created within plasma activated water (PAW), or through cold plasma treatment (CP) as reducing agent and SA as stabilizing agent. The formation of silver nanoparticles (AgNPs) was confirmed via the absorption peaks observed between 440 and 450 nm in UV-vis spectroscopy. The tensile strength (TS) and tensile modulus (TM) of the nanocomposite films were significantly higher than those of the SA films. An increase in the TS was also observed as the AgNP concentration was increased from 1 to 5 mM. The storage modulus (G’) of the nanocomposite solution was higher than that of the SA solution. The synthesis of AgNPs resulted both in a higher solution viscosity and a more marked shear-thinning effect. The synthesized AgNPs showed antimicrobial activity against both Gram-positive (<i>Staphylococcus aureus</i>) and Gram-negative (<i>Escherichia coli</i>) bacteria. The AgNPs were spherical in shape with an average size of 22 nm.https://www.mdpi.com/2079-4991/11/9/2306silver nanoparticlesplasma activated watercold plasmaantimicrobial activitymechanical properties |
| spellingShingle | Nusrat Sharmin Chengheng Pang Izumi Sone James Leon Walsh Cecilia Górriz Fernández Morten Sivertsvik Estefanía Noriega Fernández Synthesis of Sodium Alginate–Silver Nanocomposites Using Plasma Activated Water and Cold Atmospheric Plasma Treatment Nanomaterials silver nanoparticles plasma activated water cold plasma antimicrobial activity mechanical properties |
| title | Synthesis of Sodium Alginate–Silver Nanocomposites Using Plasma Activated Water and Cold Atmospheric Plasma Treatment |
| title_full | Synthesis of Sodium Alginate–Silver Nanocomposites Using Plasma Activated Water and Cold Atmospheric Plasma Treatment |
| title_fullStr | Synthesis of Sodium Alginate–Silver Nanocomposites Using Plasma Activated Water and Cold Atmospheric Plasma Treatment |
| title_full_unstemmed | Synthesis of Sodium Alginate–Silver Nanocomposites Using Plasma Activated Water and Cold Atmospheric Plasma Treatment |
| title_short | Synthesis of Sodium Alginate–Silver Nanocomposites Using Plasma Activated Water and Cold Atmospheric Plasma Treatment |
| title_sort | synthesis of sodium alginate silver nanocomposites using plasma activated water and cold atmospheric plasma treatment |
| topic | silver nanoparticles plasma activated water cold plasma antimicrobial activity mechanical properties |
| url | https://www.mdpi.com/2079-4991/11/9/2306 |
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