氧化亚铜复配杀菌剂的制备及其抑菌性能研究

Preparation and Antibacterial Activity of Cu_2O and its Mixtures

为了进一步提升无机铜系杀菌剂的抑菌性能,采用果糖一锅还原法制备出氧化亚铜,并对所得样品进行XRD分析和SEM表征。并通过抑菌圈实验考察所得产品及其与氧化锌和六次甲基四胺分别复配后对农业常见病菌的抑制效果。结果发现,当氧化亚铜的量为0.5 mg/mL时,对柑橘炭疽菌、苹果腐烂菌、黄瓜枯萎菌和小麦全蚀菌的抑制效果明显,抑制率超过90%;当氧化锌或六次甲基四胺与氧化亚铜的质量比约为1:2时,复配杀菌剂对辣椒炭疽病菌或葡萄白腐病菌的抑制作用明显增强,复配体系实现了有效组分协同杀菌的目的。

In order to improving the antibacterial activity property of inorganic copper-based fungicides, Cu2O nanocrystal was prepared via a facile one-pot synthesis by the reduction of fructose in the paper. The sample was characterized by XRD and SEM. In addition, their antibacterial activity of Cu2O nanocrystal and its mixtures containing ZnO and methenamine were also investigated by inhibition zone method. The result suggested cuprous oxide presented active inhibition to Colletotricbum glecosponoides, Valsa mall, Cucumber wih and Gaeumannomyces graminis var triticl. The inhibition rate of cuprous oxide was more than 90% once its concentration was 0.5 mg/mL. At the same time, the better antibacterial activity to Colletotncbum eapsici and Coniothyrium diplodiella, was reached when the mass of ratio of ZnO or methenamine and Cu2O was up to respectively. The synergism was disclosed in our exneriments.