University of Science, Vietnam National University, Ho Chi Minh City 700000, Vietnam.
Vietnam National University, Ho Chi Minh City 700000, Vietnam.
Biomacromolecules. 2021 Dec 13;22(12):5327-5338. doi: 10.1021/acs.biomac.1c01250. Epub 2021 Nov 22.
Rice husk is one of the most abundant biomass resources in the world, yet it is not effectively used. This study focuses on the sustainably rice-husk-extracted lignin, nano-lignin (n-Lignin), lignin-capped silver nanoparticles (LCSN), n-Lignin-capped silver nanoparticles (n-LCSN), and lignin-capped silica-silver nanoparticles (LCSSN), and using them for antibacterial activities. The final n-Lignin-based products had a sphere-like structure, of which the size varied between 50 and 80 nm. We found that while n-Lignin and lignin were less effective against than against , n-Lignin/lignin-based hybrid materials, i.e., n-LCSN, LCSN, and LCSSN, were better against than against . Interestingly, the antimicrobial behaviors of n-LCSNs could be further improved by decreasing the size of n-Lignin. Considering the facile, sustainable, and eco-friendly method that we have developed here, it is promising to use n-Lignin/lignin-based materials as highly efficient antimicrobials without environmental concerns.
稻壳是世界上最丰富的生物质资源之一，但尚未得到有效利用。本研究聚焦于可持续稻壳提取木质素、纳米木质素（n-Lignin）、木质素包覆的银纳米颗粒（LCSN）、n-Lignin 包覆的银纳米颗粒（n-LCSN）和木质素包覆的硅银纳米颗粒（LCSSN），并将它们用于抗菌活性研究。最终的基于 n-Lignin 的产品呈类球形结构，其尺寸在 50 至 80nm 之间。我们发现，虽然 n-Lignin 和木质素对 的抑制作用小于对 的抑制作用，但 n-Lignin/木质素基杂化材料，如 n-LCSN、LCSN 和 LCSSN，对 的抑制作用大于对 的抑制作用。有趣的是，通过减小 n-Lignin 的尺寸可以进一步提高 n-LCSNs 的抗菌性能。考虑到我们开发的这种简便、可持续且环保的方法，n-Lignin/木质素基材料有望作为高效抗菌剂而不会对环境造成影响。
