title: One-step preparation of banana powder/silver nanoparticles composite films.
abstract: Silver nanoparticles (Ag-NPs) were synthesized using banana powder as a reducing and stabilizing agent, and banana/Ag-NPs composite films with different concentration of Ag-NPs were prepared simultaneously. The composite films were yellowish brown and exhibited characteristic plasmon resonance peak of Ag-NPs at 430 nm. The optical, mechanical, water vapor barrier, thermal stability, and antimicrobial properties of the composite films were greatly influenced by the concentration of Ag-NPs. The composite film with a silver concentration of 1.0 mM demonstrated the highest tensile strength, thermal stability, transparency, and water contact angle with the lowest water vapor permeability (1.36 ± 0.10 × 10-9g m/m2Pa s). Also, the composite films incorporated with 1.0 mM of Ag-NPs exhibited a strong antibacterial activity against both Gram-positive (Listeria monocytogenes) and Gram-negative (Escherichia coli) food-borne pathogenic bacteria.
authors.affiliation: Department of Food Engineering, Faculty of Engineering at Kamphaengsaen, Kasetsart University, Kamphaengsaen Campus, Nakhonpathom, 73140 Thailand.
authors.forename: Aungkana
authors.initials: A
authors.lastname: Orsuwan
authors.affiliation: Department of Food Engineering and Bionanocomposite Research Institute, Mokpo National University, 61 Dorimri, Chungkyemyon, Muangun, Jeonnam 534-729 Republic of Korea.
authors.forename: Shiv
authors.initials: S
authors.lastname: Shankar
authors.affiliation: Department of Food Engineering and Bionanocomposite Research Institute, Mokpo National University, 61 Dorimri, Chungkyemyon, Muangun, Jeonnam 534-729 Republic of Korea.
authors.forename: Long-Feng
authors.initials: LF
authors.lastname: Wang
authors.affiliation: Department of Food Engineering, Faculty of Engineering at Kamphaengsaen, Kasetsart University, Kamphaengsaen Campus, Nakhonpathom, 73140 Thailand.|Center of Advanced Studies in Industrial Technology, Kasetsart University, Nakhonpathom, Thailand.
authors.forename: Rungsinee
authors.initials: R
authors.lastname: Sothornvit
authors.affiliation: Department of Food Science and Human Nutrition, KyungHee University, 26 Kyungheedaero, Dongdaemun-gu, Seoul, 120-701 Republic of Korea.
authors.forename: Jong-Whan
authors.initials: JW
authors.lastname: Rhim
keywords: Antimicrobial activity; Banana powder; Composite films; One-step preparation; Silver nanoparticles