Journal
LWT-FOOD SCIENCE AND TECHNOLOGY
Volume 81, Issue -, Pages 233-242Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.lwt.2017.04.003
Keywords
Nisin; Poly-gamma-glutamic acid/chitosan nanoparticle; Electrospun nanofiber; Listeria monocytogenes; Cheese
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Funding
- National Natural Science Foundation of China (Beijing, China) [31470594]
- Natural Science Foundation of Jiangsu Province (Nanjing, China) [BK20130493]
- China Postdoctoral Science Foundation (Beijing, China) [2014M550419, 2015T80873]
- Jiangsu Province Foundation for talents of six key industries (Nanjing, China) [NY-013]
- Jiangsu University Research Fund (Zhenjiang, China) [11JDG050]
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Listeria monocytogenes (L. monocytogenes) contamination in cheese production has received increasing attention. In order to inhibit the multiplication of the bacteria, the polyethylene oxide nanofibers containing nisin-loaded poly-gamma-glutamic acid/chitosan (NGC) nanoparticles were engineered in this study. The physicochemical properties of NGC nanoparticles and anti-listeria activities of NGC nanoparticles-embedded polyethylene oxide nanofibers on cheese were investigated. The results indicated that NGC nanoparticles at 5 mg/mL of nisin had desirable polydispersity, zeta potential, encapsulation efficiency and load capacity. NGC nanoparticles-embedded polyethylene oxide nanofibers displayed satisfactory antibacterial activity against L. monocytogenes on cheese, without impact on the sensory quality. Therefore, the polyethylene oxide nanofibers containing NGC nanoparticles could be a promising active packaging for food preservation. (C) 2017 Elsevier Ltd. All rights reserved.
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