Delicana Jared Deve P, Lalem Aldrin R, Dulog Jay C, Lumod Ryan M, Rivera Rolen Brian P, Sayson Noel Lito, Dumancas Gerard, Capangpangan Rey Y, Lubguban Arnold A, Tan Noel Peter B, Manzano Joe Anthony H, Tan Mario A, Unabia Romnick B, Omping Jahor L, Alguno Arnold C
Department of Physics, MSU- Iligan Institute of Technology, 9200, Iligan City, Philippines.
Research Center for Energy Efficient Materials (RCEEM), Premier Research Institute of Science and Mathematics, MSU- Iligan Institute of Technology, 9200, Iligan City, Philippines.
Sci Rep. 2025 Aug 7;15(1):28854. doi: 10.1038/s41598-025-13500-7.
The green synthesis of gold nanoparticles (AuNPs) using Mangifera indica (mango) fruit peel and its subsequent application to imbue color and antibacterial properties to cotton thread is explored in this study. Mango peels were dried, ground, and extracted with methanol and was added to gold ion solutions at 55 °C to synthesize AuNP. AuNPs were synthesized at different concentrations, producing various colors, and were successfully used to dye cotton threads via a heating method. The structural and optical properties of AuNPs were investigated by Fourier transform infrared (FTIR) spectroscopy, scanning electron microscope (SEM), transmission electron microscope (TEM), ultraviolet-visible spectrophotometer (UV-Vis) and dynamic light scattering (DLS). The bioactive compounds of mango peel extract were determined using Nuclear magnetic resonance spectroscopy (NMR). The antibacterial potential of AuNP-dyed cotton threads was examined by disc diffusion method against E. coli and S. aureus based on the zone of inhibition. Change in color of the reaction mixture to red indicated the formation of AuNPs. The presence of UV characteristic peak around 530 nm confirmed the presence of spherical AuNPs. NMR spectrum further confirmed the presence of bioactive functional groups involved in the reduction of HAuCl to AuNPs. TEM analysis displayed the shape of AuNPs with mean size of 16.90 nm whereas the hydrodynamic diameters range from 41 to 78 nm. The AuNP-dyed cotton threads showed antimicrobial activity against E. coli and S. aureus suggesting that this can be an excellent strategy to develop versatile and eco-friendly fabric-based biomedical products. The AuNP-dyed cotton threads demonstrated excellent color fastness and resistance to fading when subjected to various harsh conditions.
本研究探索了使用芒果果皮绿色合成金纳米颗粒（AuNPs）及其随后赋予棉线颜色和抗菌性能的应用。将芒果皮干燥、研磨，并用甲醇提取，然后在55°C下加入金离子溶液中以合成AuNP。以不同浓度合成AuNPs，产生各种颜色，并通过加热方法成功用于染棉线。通过傅里叶变换红外（FTIR）光谱、扫描电子显微镜（SEM）、透射电子显微镜（TEM）、紫外可见分光光度计（UV-Vis）和动态光散射（DLS）研究了AuNPs的结构和光学性质。使用核磁共振光谱（NMR）测定了芒果皮提取物的生物活性化合物。基于抑菌圈，通过纸片扩散法检测了AuNP染棉线对大肠杆菌和金黄色葡萄球菌的抗菌潜力。反应混合物颜色变为红色表明形成了AuNPs。在530nm左右存在紫外特征峰证实了球形AuNPs的存在。NMR光谱进一步证实了参与将HAuCl还原为AuNPs的生物活性官能团的存在。TEM分析显示AuNPs的形状，平均尺寸为16.90nm，而流体动力学直径范围为41至78nm。AuNP染棉线对大肠杆菌和金黄色葡萄球菌显示出抗菌活性，表明这可能是开发多功能且环保的织物基生物医学产品的绝佳策略。当经受各种苛刻条件时，AuNP染棉线表现出优异的色牢度和抗褪色性。
