期刊
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
卷 156, 期 -, 页码 874-884出版社
ELSEVIER
DOI: 10.1016/j.ijbiomac.2020.04.051
关键词
Bionanocomposite film; Konjac glucomannan; Carboxylation cellulose nanocrystal; Grape peel extracts; Mechanical property; Antioxidant property
资金
- National Natural Science Foundation of China [31772045]
Active bionanocomposite films were prepared by incorporating konjac glucomannan (KGM) as a matrix, with carboxylation cellulose nanocrystal (C-CNC) as a reinforcement agent and grape peel extracts (GPE) as a natural antioxidation agent. The effects of C-CNC and/or GPE addition on the structural, morphological, barrier, thermal. mechanical and antioxidant properties of the bionanocomposite films were investigated. The theological results of film forming solutions revealed that C-CNC and GPE were well dispersed in the KGM matrix. Scanning electron micrographs observed the addition of C-CNC had little effect on the microstructure, while more roughness and unevenness were observed on the film surface and cross-section with the C-CNC and GPE. Furthermore, the water vapor barrier property and transparency of the films improved by the addition of the C-CNC and GPE. Notably, the incorporating of C-CNC or GPE significantly alter the mechanical of the KGM/C-CNC/GPE bionanocomposite films. The highest tensile strength was achieved for the KGM/GPE bionanocomposite film with 10 wt% C-CNC, indicating C-CNC and GPE had synergistic effect on enhancing the TS of KGM film. Moreover, the KGM/C-CNC/GPE films exhibited strong antioxidant activity. These results suggested that KGM/C-CNC/GPE bionanocomposite films can be used as an active food packaging for increasing shelf life of packaged foods. (C) 2020 Elsevier B.V. All rights reserved.
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