Preparation, characterization, antimicrobial and cytotoxicity studies of copper/zinc-loaded montmorillonite

Lefei Jiao; Fanghui Lin; Shuting Cao; Chunchun Wang; Huan Wu; Miaoan Shu; Caihong Hu

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Preparation, characterization, antimicrobial and cytotoxicity studies of copper/zinc-loaded montmorillonite

机译：负载铜/锌的蒙脱土的制备，表征，抗菌和细胞毒性研究

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Background;A series of modified montmorillonites (Mt) including zinc-loaded Mt (Zn-Mt),copper-loaded Mt (Cu-Mt),copper/zinc-loaded Mt with different Cu/Zn ratio (Cu/Zn-Mt-1,Cu/Zn-Mt-2,Cu/Zn-Mt-3) were prepared by an ion-exchange reaction,and characterized using X-ray diffraction (XRD),fourier transformed infrared spectroscopy (FTIR) and transmission electron microscopy (TEM).The specific surface areas,antimicrobial activity and cytotoxicity of the modified Mt were investigated.Results:In the modified Mt,hydrated Cu ions and Zn ions were exchanged in the interlayer space of Mt and the particles were irregular shapes.The results showed that Cu/Zn-Mt enhanced antibacterial and antifungal activity compared with Zn-Mt and Cu-Mt possibly due to the synergistic effect between Cu and Zn.Among the Cu/Zn-Mt with different Cu/Zn raitos,Cu/Zn-Mt with a Cu/Zn ratio of 0.98 or 0.51 showed higher antimicrobial activity against gram-negative bacteria (Escherichia coli),gram-positive bacteria (Staphylococcus aureus),fungi (Candida albicans).Moreover,the antimicrobial activity of Cu/Zn-Mt was correlated with its specific surface area.Cytotoxicity studies on IPEC-J2 cell showed a slight cytotoxicity of Cu/Zn-Mt.Conclusions:The current data provide clear evidence that in terms of its antimicrobial activity and relatively low toxicity,the Cu/Zn-Mt holds great promise for applications in animal husbandry.

机译：背景;一系列改性的蒙脱土（Mt），包括载锌的Mt（Zn-Mt），载铜的Mt（Cu-Mt），不同铜/锌比的铜/锌的Mt（Cu / Zn-Mt-通过离子交换反应制备1，Cu / Zn-Mt-2，Cu / Zn-Mt-3），并用X射线衍射（XRD），傅立叶变换红外光谱（FTIR）和透射电子显微镜（结果表明：在修饰的Mt中，水合的Cu离子和Zn离子在Mt的层间空间交换，颗粒呈不规则形状，结果表明： Cu / Zn-Mt与Zn-Mt和Cu-Mt相比具有增强的抗菌和抗真菌活性。这可能是由于Cu和Zn的协同作用所致。在具有不同Cu / Zn Raitos的Cu / Zn-Mt中，Cu / Zn-Mt Cu / Zn比为0.98或0.51的细菌对革兰氏阴性菌（大肠杆菌），革兰氏阳性菌（葡萄球菌）具有更高的抗菌活性此外，Cu / Zn-Mt的抗菌活性与其比表面积相关。对IPEC-J2细胞的细胞毒性研究表明，Cu / Zn-Mt具有轻微的细胞毒性。当前数据提供了明确的证据，就其抗菌活性和相对较低的毒性而言，Cu / Zn-Mt在畜牧业中具有广阔的应用前景。

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来源
《畜牧与生物技术杂志(英文版)》 |2017年第3期|670-676|共7页
作者
Lefei Jiao; Fanghui Lin; Shuting Cao; Chunchun Wang; Huan Wu; Miaoan Shu; Caihong Hu;
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Animal Science College,Zhejiang University,Key Laboratory of Animal Feed and Nutrition of Zhejiang Province,No.866,Yuhangtang Road,Hangzhou 310058,People's Republic of China;

Animal Science College,Zhejiang University,Key Laboratory of Animal Feed and Nutrition of Zhejiang Province,No.866,Yuhangtang Road,Hangzhou 310058,People's Republic of China;

Animal Science College,Zhejiang University,Key Laboratory of Animal Feed and Nutrition of Zhejiang Province,No.866,Yuhangtang Road,Hangzhou 310058,People's Republic of China;

Animal Science College,Zhejiang University,Key Laboratory of Animal Feed and Nutrition of Zhejiang Province,No.866,Yuhangtang Road,Hangzhou 310058,People's Republic of China;

Animal Science College,Zhejiang University,Key Laboratory of Animal Feed and Nutrition of Zhejiang Province,No.866,Yuhangtang Road,Hangzhou 310058,People's Republic of China;

Animal Science College,Zhejiang University,Key Laboratory of Animal Feed and Nutrition of Zhejiang Province,No.866,Yuhangtang Road,Hangzhou 310058,People's Republic of China;

Animal Science College,Zhejiang University,Key Laboratory of Animal Feed and Nutrition of Zhejiang Province,No.866,Yuhangtang Road,Hangzhou 310058,People's Republic of China;

Key Laboratory of Animal Nutrition and Feed in East China,Ministry of Agriculture,No.866,Yuhangtang Road,Hangzhou 310058,People's Republic of China;

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Preparation, characterization, antimicrobial and cytotoxicity studies of copper/zinc-loaded montmorillonite

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