Green preparation of nano‐silver aqueous solution using fructose and evaluation of its antibacterial potential for cut carnation flowers
Green preparation of nano‐silver aqueous solution using fructose and evaluation of its antibacterial potential for cut carnation flowers
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DOI：
10.1049/mna2.12100
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发表时间：
2021-12
影响因子：
1.3
通讯作者：
Zhenpei Pang;Guidong Lin;Yuheng Wu;Hongmei Li;Yunhao Sun;Hongjun Zhou;S. He
中科院分区：
文献类型：
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作者：
Zhenpei Pang;Guidong Lin;Yuheng Wu;Hongmei Li;Yunhao Sun;Hongjun Zhou;S. He
纳米银（NS）的绿色合成因其成本低、环境友好而受到越来越多的关注。本文报道了以Tollens试剂为银离子源，D-果糖为还原剂，聚乙烯吡咯烷酮为稳定剂和封端剂，一步绿色制备稳定NS水溶液的新方法。制备的NS溶液的pH值为7.10，具有在13.95-87.36 nm范围内的近似球形NS颗粒。所得NS溶液在常温、沸水浴和酸性环境下稳定。NS溶液的紫外-可见光谱在410 nm处有明显的吸收峰。动态光散射/Zeta分析表明，NS水溶液的平均粒径为183.5 nm，聚合物分散指数为0.282，合成的绿色NS的Zeta电位为-18.0 mV。此外，NS溶液对从香石竹‘王子’切花瓶插水中分离的细菌的生长有较强的抑制作用。这些结果表明，所获得的NS溶液是一种潜在的实用和有效的抗菌剂，用于切花康乃馨和其他切花的保存。
The green synthesis of nano‐silver (NS) has gained increasing attention owing to its cost‐effectiveness and environmental friendliness. Herein, a novel one‐step green preparation method of stable NS aqueous solution using Tollens reagent as the silver ion source, D‐fructose as the reduction agent, and polyvinyl pyrrolidone as the stabilizing and capping agent is reported. The prepared NS solution had a pH value of 7.10, with approximately spherical NS particles in the range of 13.95–87.36 nm. The resulting NS solution was stable under normal temperature, boiling water bath, and acidic environment. The NS solution had a remarkable absorption peak at 410 nm in its ultraviolet–visible spectrum. The dynamic light scattering/Zeta analysis showed the average particle size of the NS aqueous solution was 183.5 nm, polymer dispersion index was 0.282, and the zeta potential of the green synthesized NS was –18.0 mV. Moreover, the NS solution exerted a strong inhibitory effect on the growth of the bacteria isolated from the vase water of cut carnation ‘Prince’ flowers. These findings indicate that the obtained NS solution is potentially a practical and effective antibacterial agent for preserving cut carnations and other cut flowers.