Preparation and Properties of Pea Starch/ε-Polylysine Composite Films

The composite films comprising pea starch (St) and ε-polylysine (PL) as the matrix and glycerol and sodium alginate as the plasticizers were investigated. The rheological properties, mechanical properties, Fourier transformed infrared spectroscopy, water vapor permeability (WVP), oil permeability, m...

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Bibliographic Details
Published in:Materials 2022-03, Vol.15 (6), p.2327
Main Authors: Yu, Zuolong, Gong, Deping, Han, Chao, Wei, Yunxiao, Fu, Changchun, Xu, Xuejiao, Lu, Youri
Format: Article
Language:English
Subjects:
Antiinfectives and antibacterials
E coli
Elongation
Mass ratios
Mechanical properties
Permeability
Polyvinyl alcohol
Proteins
Pseudoplasticity
Rheological properties
Rheology
Sodium alginate
Spectrum analysis
Tensile strength
Thermogravimetry
Viscosity
Water vapor
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Summary:The composite films comprising pea starch (St) and ε-polylysine (PL) as the matrix and glycerol and sodium alginate as the plasticizers were investigated. The rheological properties, mechanical properties, Fourier transformed infrared spectroscopy, water vapor permeability (WVP), oil permeability, microstructure, thermogravimetry (TGA), and antimicrobial properties of the composite films were analyzed. The properties of the composite films with different mass ratios of St/PL varied significantly. First, the five film solutions were different pseudoplastic fluids. Additionally, as the mass ratio of PL increased, the tensile strength of the blends decreased from 9.49 to 0.14 MPa, the fracture elongation increased from 38.41 to 174.03%, the WVP increased, and the oil resistance decreased substantially. The films with a broad range of St/PL ratios were highly soluble; however, the solubility of the film with a St/PL ratio of 2:8 was reduced. Lastly, the inhibition of , , and yeast by the films increased with increasing mass ratios of PL, and the inhibition of was the strongest.
ISSN:1996-1944
1996-1944
DOI:10.3390/ma15062327