College of Biotechnology and Sericultural Research Institute, Jiangsu University of Science and Technology, Zhenjiang 212100, PR China.
College of Biotechnology and Sericultural Research Institute, Jiangsu University of Science and Technology, Zhenjiang 212100, PR China.
Carbohydr Polym. 2022 Nov 15;296:119962. doi: 10.1016/j.carbpol.2022.119962. Epub 2022 Aug 6.
Disinfecting microbially contaminated water in a safe and sustainable way is a great challenge. The phenolics and flavonoids in plants are ideal antibacterial agents for biosafety. Herein, an all-plant-derived antibacterial sponge with a hierarchical cellular structure was prepared from natural phenolic and flavonoid crude extracts and cellulose for water purification. After being modified by quercetin, the quercetin-cellulose sponge (Q-CS) exhibits great toughness, elasticity and a large specific surface area, which benefited from a unique hierarchical cellular structure. Q-CS shows ultrahigh water flux (4.5 × 10 L·m·h·bar) and excellent antibacterial abilities against Escherichia coli and Staphylococcus aureus (<1.87 % viability). Sponges modified with crude pyrola (P-CS) and mulberry leaf extracts (M-CS) have similar properties compared with Q-CS. The good performances of P-CS and M-CS show the strong antibacterial applications of natural crude extract. This work provides a strategy for fabricating sustainable and safe antibacterial sponges for water disinfection.
以安全且可持续的方式对微生物污染的水进行消毒是一项巨大的挑战。植物中的酚类和类黄酮是用于生物安全的理想抗菌剂。在此，我们从天然酚类和类黄酮粗提物和纤维素中制备了一种具有分级细胞结构的全植物衍生抗菌海绵，用于水净化。经槲皮素改性后，槲皮素-纤维素海绵（Q-CS）表现出优异的韧性、弹性和大的比表面积，这得益于其独特的分级细胞结构。Q-CS 具有超高的水通量（4.5×10 L·m·h·bar）和对大肠杆菌和金黄色葡萄球菌的优异抗菌能力（<1.87%的存活率）。用鹿蹄草（P-CS）和桑叶提取物（M-CS）改性的海绵与 Q-CS 具有相似的性能。P-CS 和 M-CS 的良好性能表明天然粗提取物具有很强的抗菌应用。这项工作为制造可持续和安全的抗菌海绵用于水消毒提供了一种策略。
