Extending the Shelf-Life of Meat and Dairy Products via PET-Modified Packaging Activated With the Antimicrobial Peptide MTP1
Extending the Shelf-Life of Meat and Dairy Products via PET-Modified Packaging Activated With the Antimicrobial Peptide MTP1
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DOI：
10.3389/fmicb.2019.02963
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发表时间：
2020-01-09
影响因子：
5.2
通讯作者：
Palmieri, Gianna
中科院分区：
文献类型：
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作者：
Gogliettino, Marta;Balestrieri, Marco;Palmieri, Gianna
新鲜产品的特点是保质期缩短，因为它们是许多微生物的良好生长介质。因此，微生物腐败造成的重大食品供应损失已成为世界性的巨大经济和伦理问题。抗菌包装通过延长保质期和提高新鲜产品的质量和安全性，为解决这一经济和安全问题提供了可行的解决方案。本研究的目的是研究用线粒体靶向肽1 （MTP1）功能化的聚对苯二甲酸乙二醇酯（PET）食品接触面在减少与腐败相关的微生物数量和提供不同类型新鲜食品（如乳清干酪和水牛肉）的保质期稳定性方面的影响。通过水接触角测量和衰减全反射模式（ATR-FTIR）傅里叶变换红外光谱测量，对改性聚合物的等离子体活化过程进行了表征。结果表明，MTP1-PETs对腐坏微生物具有较强的抑菌作用，对人结肠癌细胞系无细胞毒性。活性聚合物具有较高的储存稳定性和良好的可重复使用性。本研究为开发可替代的抗菌包装，提高和延长易腐食品在贮藏过程中的微生物质量和安全性提供了有价值的信息。
Fresh products are characterized by reduced shelf-life because they are an excellent growth medium for a lot of microorganisms. Therefore, the microbial spoilage causing significant food supply losses has become an enormous economic and ethical problem worldwide. The antimicrobial packaging is offering a viable solution to tackle this economic and safety issue by extending the shelf-life and improving the quality and safety of fresh products. The goal of this study was to investigate the effects of a food contact surface of polyethylene terephthalate (PET) functionalized with the previously characterized antimicrobial peptide mitochondrial-targeted peptide 1 (MTP1), in reducing the microbial population related to spoilage and in providing the shelf-life stability of different types of fresh foods such as ricotta cheese and buffalo meat. Modified polymers were characterized concerning the procedure of plasma-activation by water contact angle measurements and Fourier transform infrared spectroscopy measurements in attenuated total reflection mode (ATR-FTIR). Results showed that the MTP1-PETs provided a strong antimicrobial effect for spoilage microorganisms with no cytotoxicity on a human colon cancer cell line. Finally, the activated polymers revealed high storage stability and good reusability. This study provided valuable information to develop alternative antimicrobial packaging for enhancing and extending the microbial quality and safety of perishable foods during storage.