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Preparation of 2,3-dialdehyde microcrystalline cellulose particles crosslinked with ε-poly-L-lysine and their antibacterial activity
- Source :
- Cellulose. 28:2833-2847
- Publication Year :
- 2021
- Publisher :
- Springer Science and Business Media LLC, 2021.
-
Abstract
- A series of dialdehyde microcrystalline cellulose (DAMC) particles crosslinked with EPL (EPL-DAMCs) was successfully prepared by reacting DAMC with varying amounts of e-Poly-L-lysine (EPL). Based on the excellent antibacterial property of e-poly-L-lysine (EPL), the obtained EPL-DAMCs have a broad-spectrum antibacterial activity, and their physicochemical and antibacterial activities were also investigated. Fourier -transform infrared spectroscopy results demonstrated the formation of Schiff base between the aldehyde groups in DAMC and amino groups of EPL. The DAMC particles showed an aggregated structure of fibres. Among all DAMC crosslinked with EPL (EPL-DAMCs), the EPL-DAMC-4, with a lysine content of 0.46 ± 0.08 mg/g, showed the highest antimicrobial activity against Staphylococcus aureus, Bacillus subtilis, Escherichia coli and Salmonella typhimurium, with the minimum inhibitory concentration (MIC) of 3.75, 15.0, 7.5 and 3.75 mg/mL, respectively. Compared with DAMC, the EPL-DAMC-4 exhibited the better inhibition effect and antimicrobial stability on the tested strains. These findings suggested that EPL-DAMCs might be used as antimicrobial biomaterial and have great potential in food packaging field.
- Subjects :
- Schiff base
Polymers and Plastics
biology
Lysine
02 engineering and technology
Bacillus subtilis
010402 general chemistry
021001 nanoscience & nanotechnology
medicine.disease_cause
Antimicrobial
biology.organism_classification
01 natural sciences
0104 chemical sciences
Microcrystalline cellulose
chemistry.chemical_compound
Minimum inhibitory concentration
chemistry
medicine
0210 nano-technology
Antibacterial activity
Escherichia coli
Nuclear chemistry
Subjects
Details
- ISSN :
- 1572882X and 09690239
- Volume :
- 28
- Database :
- OpenAIRE
- Journal :
- Cellulose
- Accession number :
- edsair.doi...........0df558bb6af699e1e9f8c25e37332d11