Combination of bacitracin-based flocculant and surface enhanced Raman scattering labels for flocculation, identification and sterilization of multiple bacteria in water treatment
文献类型：期刊论文
| 作者 | Zhang, Shixin; Tang, Xiaomin; Zheng, Huaili; Wang, Dongsheng; Xie, Zongli; Ding, Wei; Zheng, Xinyu |
| 刊名 | JOURNAL OF HAZARDOUS MATERIALS
 |
| 出版日期 | 2021-04-05 |
| 卷号 | 407页码:- |
| 关键词 | Flocculation SERS labels Fingerprint peak Identification Sterilization mechanism |
| ISSN号 | 0304-3894 |
| 英文摘要 | Bacteria, especially antibiotic-resistant bacteria, in water threaten public health in countries. Simultaneous flocculation, sterilization and identification of bacteria are great challenge in water treatment. Herein we presented a three-in-one compound through combining a novel Bacitracin-based flocculant (B-g-PAMDAC) and surface enhanced Raman scattering (SERS) labels, the modified Au@AgNPs using graphene oxide (GO) and 4-mercaptophenylboronic acid (4-MPBA). B-g-PAMDAC with bactericidal groups and microblock structure was synthesized via copolymerization and self-assembly. Its functional groups and microblock structure contributed to the excellent performance in flocculation of bacteria. 4-MPBA as bacterial capture bound to the bacterial cell membrane and contributed to recognition of bacteria in flocculation. Bacteria aggregating around Au@AgNPs resulted in abundant hot spots and strong Raman signals. SERS labels obviously improved the sensitivity, accuracy and stability of bacteria identification even at low bacterial concentration of 1 x 10(3) CFU mL(-1). They presented distinct fingerprints of bacteria, Escherichia coli, Pseudomonas aeruginosa, Bacillus cereus and Enterococcus faecalis, in Raman mappings. Bacitracin improved sterilization efficiency of B-g-PAMDAC in four bacteria treatment in terms of sterilization rate and time. beta-galactosidase and respiratory activity of bacteria revealed sterilization mechanism of B-g-PAMDAC that changed permeability of cell membrane before it reduced the respiration activity of bacteria and ruptured cell wall. |
| WOS研究方向 | Engineering, Environmental ; Environmental Sciences |
| 源URL | [http://ir.rcees.ac.cn/handle/311016/45920]  |
| 专题 | 生态环境研究中心_环境水质学国家重点实验室 |
| 作者单位 | 1.Chinese Acad Sci, Res Ctr Ecoenvironm Sci, State Key Lab Environm Aquat Chem, Beijing 100085, Peoples R China 2.CSIRO Mfg, Private Bag 10, Clayton, Vic 3169, Australia 3.Chongqing Technol & Business Univ, Chongqing Key Lab Catalysis & New Environm Mat, Coll Environm & Resources, Chongqin 4.Chongqing Univ, Key Lab Three Gorges Reservoir Reg Ecoenvironm, State Minist Educ, Chongqing 400045, Peoples R China |
| 推荐引用方式 GB/T 7714 | Zhang, Shixin,Tang, Xiaomin,Zheng, Huaili,et al. Combination of bacitracin-based flocculant and surface enhanced Raman scattering labels for flocculation, identification and sterilization of multiple bacteria in water treatment[J]. JOURNAL OF HAZARDOUS MATERIALS,2021,407:-. |
| APA | Zhang, Shixin.,Tang, Xiaomin.,Zheng, Huaili.,Wang, Dongsheng.,Xie, Zongli.,...&Zheng, Xinyu.(2021).Combination of bacitracin-based flocculant and surface enhanced Raman scattering labels for flocculation, identification and sterilization of multiple bacteria in water treatment.JOURNAL OF HAZARDOUS MATERIALS,407,-. |
| MLA | Zhang, Shixin,et al."Combination of bacitracin-based flocculant and surface enhanced Raman scattering labels for flocculation, identification and sterilization of multiple bacteria in water treatment".JOURNAL OF HAZARDOUS MATERIALS 407(2021):-. |
入库方式： OAI收割
来源：生态环境研究中心
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