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Preparation and characterization of bio-nanocomposite films of agar and silver nanoparticles: laser ablation method.
Carbohydr Polym. 2014 Mar 15; 103:456-65.CP

Abstract

Silver nanoparticles (AgNPs) were prepared by a laser ablation method and composite films with the AgNPs and agar were prepared by solvent casting method. UV-vis absorbance test and transmission electron microscopy (TEM) analysis results revealed that non-agglomerated spherical AgNPs were formed by the laser ablation method. The surface color of the resulting agar/AgNPs films exhibited the characteristic plasmonic effect of the AgNPs with the maximum absorption peaks of 400-407 nm. X-ray diffraction (XRD) test results also exhibited characteristic AgNPs crystals with diffraction peaks observed at 2θ values of 38.39°, 44.49°, and 64.45°, which were corresponding to (111), (200), and (220) crystallographic planes of face-centered cubic (fcc) silver crystals, respectively. Thermogravimetric analysis (TGA) results showed that thermal stability of the agar/AgNPs composite films was increased by the inclusion of metallic silver. Water vapor barrier properties and surface hydrophobicity of the agar/AgNPs films increased slightly with the increase in AgNPs content but they were not statistically significant (p>0.05), while mechanical strength and stiffness of the composite films decreased slightly (p<0.05). The agar/AgNPs films exhibited distinctive antimicrobial activity against both Gram-positive (Listeria monocytogenes) and Gram-negative (Escherichia coli O157:H7) bacterial pathogens.

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Publisher Full Text (DOI)

Authors+Show Affiliations

Rhim JW
Department of Food Engineering and Bionanocomposite Research Institute, Mokpo National University, 61 Dorimri, Chungkyemyon, Muangun, 534-729 Jeonnam, Republic of Korea. Electronic address: jwrhim@mokpo.ac.kr.
Wang LF
Department of Food Engineering and Bionanocomposite Research Institute, Mokpo National University, 61 Dorimri, Chungkyemyon, Muangun, 534-729 Jeonnam, Republic of Korea.
Lee Y
Department of Chemistry, Mokpo National University, 61 Dorimri, Chungkyemyon, Muangun, 534-729 Jeonnam, Republic of Korea.
Hong SI
Korea Food Research Institute, 516 Baekhyun-dong, Bundang-gu, Seongnam-si, 463-746 Gyonggi-do, Republic of Korea.

MeSH

AgarAnti-Bacterial AgentsDose-Response Relationship, DrugEscherichia coli O157LasersListeria monocytogenesMetal NanoparticlesMicrobial Sensitivity TestsSilverStructure-Activity Relationship

Pub Type(s)

Journal Article
Research Support, Non-U.S. Gov't

Language

eng

PubMed ID

24528754

Citation

Rhim, Jong-Whan, et al. "Preparation and Characterization of Bio-nanocomposite Films of Agar and Silver Nanoparticles: Laser Ablation Method." Carbohydrate Polymers, vol. 103, 2014, pp. 456-65.
Rhim JW, Wang LF, Lee Y, et al. Preparation and characterization of bio-nanocomposite films of agar and silver nanoparticles: laser ablation method. Carbohydr Polym. 2014;103:456-65.
Rhim, J. W., Wang, L. F., Lee, Y., & Hong, S. I. (2014). Preparation and characterization of bio-nanocomposite films of agar and silver nanoparticles: laser ablation method. Carbohydrate Polymers, 103, 456-65. https://doi.org/10.1016/j.carbpol.2013.12.075
Rhim JW, et al. Preparation and Characterization of Bio-nanocomposite Films of Agar and Silver Nanoparticles: Laser Ablation Method. Carbohydr Polym. 2014 Mar 15;103:456-65. PubMed PMID: 24528754.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Preparation and characterization of bio-nanocomposite films of agar and silver nanoparticles: laser ablation method. AU - Rhim,Jong-Whan, AU - Wang,Long-Feng, AU - Lee,Yonghoon, AU - Hong,Seok-In, Y1 - 2014/01/05/ PY - 2013/10/04/received PY - 2013/12/23/revised PY - 2013/12/26/accepted PY - 2014/2/18/entrez PY - 2014/2/18/pubmed PY - 2014/11/5/medline KW - Agar KW - Antimicrobial activity KW - Bio-nanocomposites KW - Laser ablation KW - Silver nanoparticles SP - 456 EP - 65 JF - Carbohydrate polymers JO - Carbohydr Polym VL - 103 N2 - Silver nanoparticles (AgNPs) were prepared by a laser ablation method and composite films with the AgNPs and agar were prepared by solvent casting method. UV-vis absorbance test and transmission electron microscopy (TEM) analysis results revealed that non-agglomerated spherical AgNPs were formed by the laser ablation method. The surface color of the resulting agar/AgNPs films exhibited the characteristic plasmonic effect of the AgNPs with the maximum absorption peaks of 400-407 nm. X-ray diffraction (XRD) test results also exhibited characteristic AgNPs crystals with diffraction peaks observed at 2θ values of 38.39°, 44.49°, and 64.45°, which were corresponding to (111), (200), and (220) crystallographic planes of face-centered cubic (fcc) silver crystals, respectively. Thermogravimetric analysis (TGA) results showed that thermal stability of the agar/AgNPs composite films was increased by the inclusion of metallic silver. Water vapor barrier properties and surface hydrophobicity of the agar/AgNPs films increased slightly with the increase in AgNPs content but they were not statistically significant (p>0.05), while mechanical strength and stiffness of the composite films decreased slightly (p<0.05). The agar/AgNPs films exhibited distinctive antimicrobial activity against both Gram-positive (Listeria monocytogenes) and Gram-negative (Escherichia coli O157:H7) bacterial pathogens. SN - 1879-1344 UR - https://www.unboundmedicine.com/medline/citation/24528754/Preparation_and_characterization_of_bio_nanocomposite_films_of_agar_and_silver_nanoparticles:_laser_ablation_method_ DB - PRIME DP - Unbound Medicine ER -