Antimicrobial Potential of Chitosan Films Incorporated with Alcoholic Extract from Mimosa tenuiflora Leaves

Antimicrobial films were prepared with chitosan containing the methanolic extract of M. tenuiflora leaves (FECT20%, FECT30%, and FECT40%), and their antimicrobial activities were evaluated by agar diffusion. The films were characterized by IR spectroscopy, scanning electron microscopy (SEM) and TG/D...

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Bibliographic Details
Published in:	Chemistry & biodiversity p. e202400645
Main Authors:	Souza Neta, Lourdes Cardoso Cardoso de, Dos Santos, Arnaud Victor, Santos, Rodrigo N, Santana, Aiane N, de Jesus, Andreza Santos, Torquato, Suzimone de Jesus C, Lavall, Rodrigo Lassarote, Malta, Marcos, Dos Santos, Gustavo Souza, Ferraz, Caline G, Pereira, Madson de Godoi, Ribeiro, Paulo, Santos, Luis Felipe G
Format:	Journal Article
Language:	English
Published:	Switzerland 24-06-2024
Subjects:	antibacterial activity Chitosan film biomaterials Mimosa Fabaceae
Online Access:	Get full text
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Summary:	Antimicrobial films were prepared with chitosan containing the methanolic extract of M. tenuiflora leaves (FECT20%, FECT30%, and FECT40%), and their antimicrobial activities were evaluated by agar diffusion. The films were characterized by IR spectroscopy, scanning electron microscopy (SEM) and TG/DTG curves. TG/DTG curves showed thermal stability of chitosan-extract films up to 166 ºC. Micrographs of chitosan-extract films revealed an increase in porosity with the addition of extract. The FECT40% film showed inhibition zone diameters (IZ) against Micrococcus luteus, Staphylococcus aureus, Bacillus subtilis, and B. cereus, ranging from 1.0 ± 0.02 to 0.72 ± 0.09 cm. Only FECT30% and FECT40% inhibited the P. aeruginosa with IZs of 0.68 ± 0.02 and 0.77 ± 0.06 cm, respectively. In turn, the extract showed inhibition against B. subtilis and B. cereus, with IZs values of 0.92 ± 0.2 cm and 0.72 ± 0.05 cm, respectively. Additionally, the crude extract presented antioxidant potential with inhibition percentages of 32.74% ± 0.90 for ABTS and 27.04% ± 1.36 for DPPH. The antimicrobial and antioxidant activities of the crude extract, as well as the antimicrobial property of chitosan-extract films, suggests the potential of these biopolymers for the development of wound healing bandages and new food packaging alternatives.
Bibliography:	ObjectType-Article-1 SourceType-Scholarly Journals-1 ObjectType-Feature-2 content type line 23
ISSN:	1612-1872 1612-1880 1612-1880
DOI:	10.1002/cbdv.202400645