Tamilselvi Yuvaraj, Muruganandham Moorthy, Sivasubramanian Kanagasabapathy, Vijayalakshmi Dhakshan Prakash, Amirthalingam Tamilselvan, Reddy Daram Sairam, Madhav Avula, Rebecca Jeyanthi, Krishnan Poorni Santhana, Rajkumar Sivanraju, Velmurugan Palanivel
Centre for Materials Engineering and Regenerative Medicine, Bharath Institute of Higher Education and Research, Selaiyur, Chennai, Tamil Nadu, 600073, India.
Department of Mechanical Engineering, Institute of Technology, Hawassa University, Hawassa, Ethiopia.
Discov Nano. 2025 Jul 28;20(1):121. doi: 10.1186/s11671-025-04318-3.
Green nanoparticle synthesis, which avoids the use of hazardous chemicals, offers a sustainable alternative to traditional techniques. The purpose of this study was to create aluminium oxide nanoparticles (AlO NPs) by utilizing pollen extract from Cocos nucifera and aluminium nitrate nanohydrate. The spherical shape of the nanoparticles, which ranged in size from 10 to 100 nm and had a prominent absorption peak at 281 nm, was shown by characterization using ultraviolet-visible spectroscopy (UV-Vis), Fourier transform infrared spectroscopy (FTIR), X-ray diffraction (XRD), and High-resolution transmission electron microscopy (HRTEM). The existence of biomolecules that served as capping and reducing agents was verified by FTIR. An IC₅₀ of 43.17% indicated that the produced AlO NPs had considerable antioxidant activity. MIC (Minimum Inhibitory Concentration) and MBC (Minimum Bactericidal Concentration) values of 0.625 mg/mL were found in antibacterial experiments, which demonstrated considerable inhibition zones against E. coli (up to 21 mm) and S. aureus (up to 16 mm). E coli and S. aureus biofilm formation was reduced by 72.46% and 48.55%, respectively, by the nanoparticles. The food-grade covered containers maintained their antibacterial properties even after being cleaned, suggesting that they could be used as environmentally beneficial food preservatives. This work emphasizes how green-synthesised AlO NPs can be used in environmentally friendly food packaging. The long-term performance and safety under actual storage circumstances should be the main topics of future research.
绿色纳米颗粒合成避免了使用有害化学物质，为传统技术提供了一种可持续的替代方案。本研究的目的是利用椰树花粉提取物和硝酸铝纳米水合物制备氧化铝纳米颗粒（AlO NPs）。通过紫外可见光谱（UV-Vis）、傅里叶变换红外光谱（FTIR）、X射线衍射（XRD）和高分辨率透射电子显微镜（HRTEM）表征显示，纳米颗粒呈球形，尺寸范围为10至100nm，在281nm处有一个突出的吸收峰。FTIR证实了作为封端剂和还原剂的生物分子的存在。IC₅₀为43.17%，表明所制备的AlO NPs具有相当的抗氧化活性。在抗菌实验中发现MIC（最小抑菌浓度）和MBC（最小杀菌浓度）值为0.625mg/mL，这表明对大肠杆菌（高达21mm）和金黄色葡萄球菌（高达16mm）有相当大的抑菌圈。纳米颗粒分别使大肠杆菌和金黄色葡萄球菌生物膜形成减少了72.46%和48.55%。食品级覆盖容器即使在清洗后仍保持其抗菌性能，这表明它们可用作环境友好型食品防腐剂。这项工作强调了绿色合成的AlO NPs如何用于环保型食品包装。实际储存条件下的长期性能和安全性应是未来研究的主要课题。
