Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
7782576 | Carbohydrate Polymers | 2018 | 29 Pages |
Abstract
Methylcellulose is a biopolymer, which can be used in the preparation of films for the production of biodegradable active packaging. In this work, the methylcellulose films containing biosynthesized silver nanoparticles (AgNPs) were developed using Lippia alba extract. The physico-chemical, antioxidant, and antimicrobial properties of the films were studied. The insertion of Lippia alba compounds was verified using infrared spectroscopy (FTIR), with the appearance of a band at 1595â¯cmâ1 and 1410â¯cmâ1 which is characteristic of CCC stretches of the aromatic ring, and the increase in the hydrophobicity of the films containing the extract in relation to the control film. The films containing AgNPs presented a decrease in tensile strength and elastic modulus, but increased elongation. It was observed that the films that contain AgNPs presented superior antioxidant activity compared to the other films, besides antimicrobial activity against the tested microorganisms.
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Physical Sciences and Engineering
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Organic Chemistry
Authors
Michael Ramos Nunes, Mércia de Souza Maguerroski Castilho, Ana Paula de Lima Veeck, Cleonice Gonçalves da Rosa, Carolina Montanheiro Noronha, Matheus V.O.B. Maciel, Pedro Manique Barreto,