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

Autor: Dos Santos AV; Departamento de Ciências Exatas e da Terra I, Universidade do Estado da Bahia., Rua Silveira Martins, 2555, Cabula, 41150-000, Salvador, Bahia, Brazil., Santos RN; Departamento de Ciências Exatas e da Terra I, Universidade do Estado da Bahia., Rua Silveira Martins, 2555, Cabula, 41150-000, Salvador, Bahia, Brazil., Santana AN; Departamento de Ciências Exatas e da Terra I, Universidade do Estado da Bahia., Rua Silveira Martins, 2555, Cabula, 41150-000, Salvador, Bahia, Brazil., Santos de Jesus A; Departamento de Ciências Exatas e da Terra I, Universidade do Estado da Bahia., Rua Silveira Martins, 2555, Cabula, 41150-000, Salvador, Bahia, Brazil., Torquato SJC; Departamento de Ciências Exatas e da Terra I, Universidade do Estado da Bahia., Rua Silveira Martins, 2555, Cabula, 41150-000, Salvador, Bahia, Brazil., Pereira MG; Departamento de Ciências Exatas e da Terra I, Universidade do Estado da Bahia., Rua Silveira Martins, 2555, Cabula, 41150-000, Salvador, Bahia, Brazil., Santos LFG; Departamento de Ciências Exatas e da Terra I, Universidade do Estado da Bahia., Rua Silveira Martins, 2555, Cabula, 41150-000, Salvador, Bahia, Brazil., Lassarote Lavall R; Departamento de Química, Instituto de Ciências Exatas, Universidade Federal de Minas Gerais, Av. Antônio Carlos, 6627, Pampulha, 31270-901, Belo Horizonte, Minas Gerais, Brazil., Malta M; Instituto de Química, Universidade Federal da Bahia, Rua Barão de Jeremoabo s/n, 40170-115, Salvador, Brazil., Dos Santos GS; Departamento de Ciências da Vida, Universidade do Estado da Bahia, Rua Silveira Martins, 2555, Cabula, 41150-000, Salvador, Bahia, Brazil., Ferraz CG; Metabolomics Research Group, Instituto de Química, Universidade Federal da Bahia, Rua Barão de Jeremoabo s/n, 40170-115, Salvador, Brazil., Ribeiro PR; Metabolomics Research Group, Instituto de Química, Universidade Federal da Bahia, Rua Barão de Jeremoabo s/n, 40170-115, Salvador, Brazil., de Souza Neta LC; Departamento de Ciências Exatas e da Terra I, Universidade do Estado da Bahia., Rua Silveira Martins, 2555, Cabula, 41150-000, Salvador, Bahia, Brazil.
Jazyk: angličtina
Zdroj: Chemistry & biodiversity [Chem Biodivers] 2024 Jun 24, pp. e202400645. Date of Electronic Publication: 2024 Jun 24.
DOI: 10.1002/cbdv.202400645
Abstrakt: 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 °C. 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.
(© 2024 Wiley-VHCA AG, Zurich, Switzerland.)
Databáze: MEDLINE
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