Zhang Lei, Cui Mei, Tong Huan, Zhang Jiaqi, Li Qiannuo, Gao Xue, Qi Wei, Lam Hon Loong, Huang Renliang, Su Rongxin
State Key Laboratory of Chemical Engineering, Tianjin Key Laboratory of Membrane Science and Desalination Technology, School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, PR China.
State Key Laboratory of Chemical Engineering, Tianjin Key Laboratory of Membrane Science and Desalination Technology, School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, PR China.
Carbohydr Polym. 2025 Jun 15;358:123520. doi: 10.1016/j.carbpol.2025.123520. Epub 2025 Mar 19.
Enhancing food security and nutrition remains a significant global challenge. Edible coatings have been demonstrated to preserve highly perishable fruits to reduce food loss, address chronic undernourishment, minimize health concerns, and improve environmental sustainability. However, existing biobased edible coatings face limitations in functionality and oxygen permeation control, hindering their effectiveness in preserving fruits. In this study, we have developed a multi-functional biobased conformal coating using a dipping process incorporating nanocellulose, bee wax, and curcumin. This innovative coating effectively extends the shelf life of fresh fruits by restraining cellular metabolism, minimizing water loss, and preventing microbial contamination. To tailor oxygen permeation, we have proposed a universal coating thickness power law with high accuracy, along with fruit oxygen barrier lines/bands, ensuring the best preservation performance. Our coating is transparent, washable, and biodegradable while also possessing excellent mechanical strength, antibacterial properties, and antioxidant capabilities. These features make it a promising and environmentally friendly solution for enhancing food security.
加强粮食安全和营养仍然是一项重大的全球挑战。已证明可食用涂层能够保存极易腐烂的水果，以减少食物损失、解决长期营养不良问题、将健康问题降至最低并提高环境可持续性。然而，现有的生物基可食用涂层在功能和氧气渗透控制方面存在局限性，这阻碍了它们在保存水果方面的有效性。在本研究中，我们通过浸涂工艺开发了一种多功能生物基保形涂层，该工艺包含纳米纤维素、蜂蜡和姜黄素。这种创新涂层通过抑制细胞代谢、减少水分流失和防止微生物污染，有效地延长了新鲜水果的保质期。为了定制氧气渗透，我们提出了一个高精度的通用涂层厚度幂律以及水果氧气阻隔线/带，以确保最佳的保存性能。我们的涂层是透明的、可清洗的且可生物降解的，同时还具有出色的机械强度、抗菌性能和抗氧化能力。这些特性使其成为加强粮食安全的一个有前景且环保的解决方案。
