Fabrication and Characterization of Antibacterial Polyvinyl Alcohol/Ag@MOF Films for Food Packing

ZHANG Meng; WANG Guohui; ZHANG Xin; ZHENG Yuqi; LI Shaoxiang; WANG Dong; LI Yanxin; QU Wenjuan

doi:10.13386/j.issn1002-0306.2021040039

Volume 42 Issue 23

Nov. 2021

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Science and Technology of Food Industry > 2021 > 42(23): 243-250. > DOI: 10.13386/j.issn1002-0306.2021040039

ZHANG Meng, WANG Guohui, ZHANG Xin, et al. Fabrication and Characterization of Antibacterial Polyvinyl Alcohol/Ag@MOF Films for Food Packing[J]. Science and Technology of Food Industry, 2021, 42(23): 243−250. (in Chinese with English abstract). doi: 10.13386/j.issn1002-0306.2021040039.

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Fabrication and Characterization of Antibacterial Polyvinyl Alcohol/Ag@MOF Films for Food Packing

ZHANG Meng^{1, 2, 3,},
WANG Guohui^{1, 2, 3},
ZHANG Xin^{1, 2, 3},
ZHENG Yuqi^{1, 2, 3},
LI Shaoxiang^{1, 2, 3, ,},
WANG Dong^{1, 2, 3, ,},
LI Yanxin^{1, 2, 3},
QU Wenjuan^{1, 2, 3}

1.
College of Environment and Safety Engineering, Qingdao University of Science and Technology, Qingdao 266000, China
2.
Shandong Engineering Research Center for Marine Environment Corrosion and Safety Protection, Qingdao 266000, China
3.
Shandong Engineering Technology Research Center for Advanced Coating, Qingdao University of Science and Technology, Qingdao 266000, China

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Received Date: April 05, 2021
Available Online: October 07, 2021

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Abstract

Abstract

Four different polyvinyl alcohol (PVA) based food packaging films (PVA/Ag@MOF, PVA/H₂PYDC, PVA/Ag, PVA) were prepared by flow-casting method in order to analyze the feasibility of silver based organic framework (Ag@MOF) for food packaging. Their mechanical properties, thermodynamic properties, water barrier, antibacterial and cytotoxicity were studied. The results showed that compared with PVA and PVA/H₂PYDC films, the addition of Ag@MOF improved the mechanical properties of the films, and the maximum tensile strength of the films was increased to 36.21 MPa. Compared with PVA, PVA/H2PYDC and PVA/AgNPs films, the addition of Ag@MOF enhanced the thermal stability of the films. Compared with PVA and PVA/H₂PYDC films, the rigid structures of AgNPs and Ag@MOF prevented the diffusion of water and improved the performance of water resistance. The antibacterial activity of PVA/Ag@MOF membrane againsted Staphylococcus aureus and Escherichia coli was much higher than that of AgNPs and H₂PYDC composite films, and it had low cytotoxicity. Therefore, PVA/Ag@MOF film is a promising food packaging material, which can reduce the interference of environmental microorganisms on food with low cytotoxicity, and improve food safety and storage cycle.
- polyvinyl alcohol,
- antibacterial activity,
- cytotoxicity,
- food packaging films

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References

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