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Article

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

1
Biology and Environmental Engineering College, Zhejiang Shuren University, Hangzhou 310015, China
2
School of Innovation & Entrepreneurship, Zhejiang Shuren University, Hangzhou 310015, China
*
Author to whom correspondence should be addressed.
Academic Editor: Ana Paula Piedade
Materials 2022, 15(6), 2327; https://doi.org/10.3390/ma15062327
Received: 28 February 2022 / Revised: 15 March 2022 / Accepted: 20 March 2022 / Published: 21 March 2022
(This article belongs to the Section Biomaterials)
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 E. coli, B.subtilis, and yeast by the films increased with increasing mass ratios of PL, and the inhibition of B.subtilis was the strongest. View Full-Text
Keywords: pea starch; ε-poly lysine; composite film; antibacterial; properties pea starch; ε-poly lysine; composite film; antibacterial; properties
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MDPI and ACS Style

Yu, Z.; Gong, D.; Han, C.; Wei, Y.; Fu, C.; Xu, X.; Lu, Y. Preparation and Properties of Pea Starch/ε-Polylysine Composite Films. Materials 2022, 15, 2327. https://doi.org/10.3390/ma15062327

AMA Style

Yu Z, Gong D, Han C, Wei Y, Fu C, Xu X, Lu Y. Preparation and Properties of Pea Starch/ε-Polylysine Composite Films. Materials. 2022; 15(6):2327. https://doi.org/10.3390/ma15062327

Chicago/Turabian Style

Yu, Zuolong, Deping Gong, Chao Han, Yunxiao Wei, Changchun Fu, Xuejiao Xu, and Youri Lu. 2022. "Preparation and Properties of Pea Starch/ε-Polylysine Composite Films" Materials 15, no. 6: 2327. https://doi.org/10.3390/ma15062327

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