Preparation of Nano-Ag@SiO2-Modified Polyvinylidene Chloride Coating and Its Effect on Quality Maintenance of Clean Eggs during Storage

doi:10.7506/spkx1002-6630-201823035

Abstract

Abstract: In this study, different amounts of nano-Ag@SiO2 were used to modify polyvinylidene chloride (PVDC) coating in order to improve the efficacy of PVDC coating in preserving the quality of clean eggs and consequently to extend their shelf life. The results showed that nano-Ag@SiO2 could significantly improve the bactericidal effect of PVDC coating on pathogens and could also stably fill in the intermolecular spaces of PVDC coating to improve its density and significantly reduce its viscosity and increase its moisture barrier properties (P < 0.05). Moreover, the addition of 0.21% (m/m) nano-Ag@SiO2 was more effective in modifying PVDC coating, and it could significantly reduce mass loss, inhibit microbial growth and preserve the freshness of clean eggs during storage. In summary, nano-Ag@SiO2-modified PVDC coating is a new packaging material for clean eggs that can extend their shelf life up to 7 weeks.

Key words: nano-Ag@SiO2, modified polyvinylidene chloride, bactericidal effect, preservation

CLC Number:

TS206.4

LIANG Yanwen, YAN Wenjing, ZHAO Jianying, ZHAO Yuan, ZHAO Guofeng, ZHANG Jianhao. Preparation of Nano-Ag@SiO2-Modified Polyvinylidene Chloride Coating and Its Effect on Quality Maintenance of Clean Eggs during Storage[J]. FOOD SCIENCE, 2018, 39(23): 235-242.

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Preparation of Nano-Ag@SiO2-Modified Polyvinylidene Chloride Coating and Its Effect on Quality Maintenance of Clean Eggs during Storage

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