Frequent food poisoning and food-borne diseases outbreaking in recent years have caused people to attach great attention to food safety, especially the food contact materials that are essential in the food industrial chains and daily lives, ensuring their clean sanitation are of great importance in blocking microbial contamination and spread of food-borne pathogens. Stainless steel (SS) is one of the most accepted and widely used food contact material, and the Cu-bearing SS possesses excellent antibacterial performance and maintains the original mechanical properties of SS, maybe making it a better substitute for the conventional SS in the food area. Taking advantages of bactericidal and antifouling properties of Cu-bearing SS, this study simulated a variety of food contact scenarios, explored a new strategy for food preservation and food safety by using Cu-bearing SS as a food contact material. The results showed that the Cu-bearing SS could not only delay the spoilage of different foods by inhibiting the activity of microorganisms in foods, but also reduce the expressions of spoilage traits of bacteria as well as the formation of biofilms by quenching the quorum-sensing signals, and further creating a good bacteriostatic atmosphere for the contacted food and its surrounding environment. In addition, the remarkable antifouling property of Cu-bearing SS would give the material a self-cleaning feature for food applications, which can avoid secondary contamination of food as a source of contamination. This study well demonstrates that the Cu-bearing SS has broad application potentials and prospects in the food area.

近年来频繁发生的食物中毒和食源性疾病的爆发已引起人们对食品安全的高度重视，尤其是在食品产业链和日常生活中必不可少的食品接触材料，确保其清洁卫生对阻断食品安全至关重要。微生物污染和食源性病原体的传播。不锈钢（SS）是最广泛使用的食品接触材料之一，含铜的SS具有出色的抗菌性能并保持SS的原始机械性能，可能使其成为食品中常规SS的更好替代品区。这项研究利用含铜SS的杀菌和防污特性，模拟了多种食品接触场景，通过使用含铜SS作为食品接触材料，探索了一种用于食品保存和食品安全的新策略。结果表明，含铜SS不仅可以通过抑制食品中微生物的活性来延缓不同食品的腐败变质，而且可以通过猝灭群体感应来减少细菌的腐败性状表达以及生物膜的形成。信号，并进一步为接触的食物及其周围环境创造良好的抑菌气氛。此外，含铜SS的显着防污性能将使该材料具有用于食品应用的自清洁功能，从而可以避免作为污染源的食品受到二次污染。这项研究很好地证明了含铜SS在食品领域具有广泛的应用潜力和前景。