纳米二氧化硅-姜黄素杂化材料的制备及防霉性能

Preparation of Hybrid Material of Nano-silica-curcumin and Its Mould Proofing

采用硅烷偶联剂3-氨丙基三乙氧基硅烷(APTES)将具有生物活性的植物多酚姜黄素接枝在纳米二氧化硅上得到二氧化硅-姜黄素有机无机杂化材料。用红外光谱、XRD对产物结构进行了必要表征。元素分析仪确定了产物中被接枝的二氧化硅量为28.5%(质量比)。并选用黑曲霉和青霉作供试菌种,对其防霉性能和对霉菌的光毒性作了一定研究。研究结果表明:姜黄素通过APTES能接枝在纳米二氧化硅表面,并得到含希夫碱(C=N)官能团有机无机杂化材料;制备的杂化材料对青霉和黑曲霉均表现出较好的抗菌效果,特别是对黑曲霉表现更强的抗菌防霉性能,且对黑曲霉有较优异的光毒性反应。

Theorganic-inorganic hybrid material of silica-curcumin was prepared by silane coupling agent 3-aminopropyl triethoxysilane grafting curcumin of a natural product with biological activity onto the nano-silica.The product structure was characterized with IR,XRD spectrum.The grafted amount of 28.5% of silica of the product was determined by Elemental analyzer.The results showed that Curcumin can be grafted onto nano-silica surface by APTES and yields organic-inorganic hybrid material containing Schiff base（C = N） functional group.The black Aspergillus and Penicillium strains was selected for its antifungal test.Ihe antifungal properties and optical toxicity of nano-silica silica-curcumin to mould were investigated.The experimental results indicated thant the hybrid material showed good antibacterial effect on Penicillium and Aspergillus niger mildew.Especially,the hybrid material showed dramatic antibacterial and excellent light toxic effects on the Aspergillus niger.