食品科学 ›› 2018, Vol. 39 ›› Issue (23): 235-242.doi: 10.7506/spkx1002-6630-201823035

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纳米Ag@SiO2改性聚偏二氯乙烯涂膜材料及提高清洁鸡蛋贮藏保鲜效果

梁艳文,严文静,赵见营,赵 媛,赵国峰,章建浩*   

  1. 国家肉品质量与安全控制工程技术研究中心,江苏省肉类生产与加工质量安全控制协同创新中心,南京农业大学食品科技学院,江苏 南京 210095
  • 出版日期:2018-12-15 发布日期:2018-12-17
  • 基金资助:
    中央财政农业技术推广项目(TG(16)033);江苏省农业科技自主创新项目(CX(15)1049)

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

LIANG Yanwen, YAN Wenjing, ZHAO Jianying, ZHAO Yuan, ZHAO Guofeng, ZHANG Jianhao*   

  1. National Center of Meat Quality and Safety Control, Jiangsu Collaborative Innovation Center of Meat Production and Processing, Quality and Safety Control, College of Food Science and Technology, Nanjing Agricultural University, Nanjing 210095, China
  • Online:2018-12-15 Published:2018-12-17

摘要: 通过添加不同质量分数的纳米Ag@SiO2改性聚偏二氯乙烯(polyvinylidene chloride,PVDC)涂膜材料,以期提高PVDC涂膜材料对清洁鸡蛋的涂膜保鲜效果,延长鸡蛋货架期。结果表明:纳米Ag@SiO2可以明显提高PVDC成膜材料对致病菌的杀菌作用,并且能够稳定地填充于PVDC涂膜材料的分子空隙中,提高PVDC成膜致密度,显著降低PVDC涂膜液的黏度并提高其成膜阻水性(P<0.05);纳米Ag@SiO2质量分数为0.21%时对PVDC材料有较好的改性效果,并且可以明显减小清洁鸡蛋在贮藏过程中的质量损失并抑制微生物的生长,保持鸡蛋的新鲜度。综上所述,纳米Ag@SiO2改性PVDC涂膜材料是一种良好的清洁鸡蛋涂膜保鲜包装新材料,可延长清洁鸡蛋保质期至7周。

关键词: 纳米Ag@SiO2, 改性聚偏二氯乙烯, 杀菌作用, 贮藏保鲜

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

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