title: Preparation of pectin/silver nanoparticles composite films with UV-light barrier and properties.
abstract: Silver nanoparticles (AgNPs) was synthesized by a green method using an aqueous extract of Caesalpinia mimosoides Lamk (CMLE) as reducing and stabilizing agents, and they were used for the preparation of pectin-based antimicrobial composite films. The AgNPs were spherical in shape with the size in the range of 20-80nm and showed the absorption peak around 500nm. The pectin/AgNPs composite film exhibited characteristic absorption peak of AgNPs at 480nm. The surface color and light transmittance of the pectin films were greatly influenced by the addition of AgNPs. The lightness of the films decreased, however, redness and yellowness of the films increased after incorporation of AgNPs. UV-light barrier property of the pectin film increased significantly with a little decrease in the transparency. Though there were no structural changes in the pectin film by the incorporation of CMLE and AgNPs as indicated by the FTIR results, the film properties such as thermal stability, mechanical strength, and water vapor barrier properties of the pectin films increased. The pectin/AgNPs nanocomposite films exhibited strong antibacterial activity against food-borne pathogenic bacteria, Escherichia coli and Listeria monocytogenes.
authors: Department of Food Engineering and Bionanocomposite Research Institute, Mokpo National University, 61 Dorimri, Chungkyemyon, Muangun, 534729 Jeonnam, Republic of Korea, Republic of Korea.
authors: Shiv
authors: S
authors: Shankar
authors: Food Technology Program, School of Agro-Industry, Mae Fah Luang University, 333 Moo 1, Thasud, Muang, Chiang Rai 57100, Thailand.
authors: Nattareya
authors: N
authors: Tanomrod
authors: Food Technology Program, School of Agro-Industry, Mae Fah Luang University, 333 Moo 1, Thasud, Muang, Chiang Rai 57100, Thailand.
authors: Saroat
authors: S
authors: Rawdkuen
authors: Department of Food Engineering and Bionanocomposite Research Institute, Mokpo National University, 61 Dorimri, Chungkyemyon, Muangun, 534729 Jeonnam, Republic of Korea, Republic of Korea. Electronic address: jwrhim@mokpo.ac.kr.
authors: Jong-Whan
authors: JW
authors: Rhim
mesh_terms: D000900:Anti-Bacterial Agents / Q000138:chemical synthesis* / Q000494:pharmacology; D029911:Caesalpinia / Q000737:chemistry*; D003116:Color; D004926:Escherichia coli / Q000187:drug effects / Q000254:growth & development; D055772:Green Chemistry Technology; D008089:Listeria monocytogenes / Q000187:drug effects / Q000254:growth & development; D008567:Membranes, Artificial; D053768:Metal Nanoparticles / Q000737:chemistry* / Q000648:ultrastructure; D008826:Microbial Sensitivity Tests; D050296:Microbial Viability; D053761:Nanocomposites / Q000737:chemistry* / Q000648:ultrastructure; D010084:Oxidation-Reduction; D010368:Pectins / Q000737:chemistry* / Q000302:isolation & purification; D010936:Plant Extracts / Q000737:chemistry; D012834:Silver / Q000737:chemistry* / Q000494:pharmacology; D013473:Sunscreening Agents / Q000138:chemical synthesis* / Q000494:pharmacology; D014466:Ultraviolet Rays
chemical_list: D000900:Anti-Bacterial Agents; D008567:Membranes, Artificial; D010936:Plant Extracts; D013473:Sunscreening Agents; D012834:Silver; D010368:Pectins
keywords: Antibacterial activity; Pectin composite film; Silver nanoparticles