A homogeneous magnetic bead-based impedance immunosensor for highly sensitive detection of Escherichia coli O157:H7 | |
Wang, Shujun1; Sun, Chongyun2; Hu, Qiushi1; Li, Shuang1; Wang, Chengbin3; Wang, Peng4; Zhou, Lei1 | |
刊名 | BIOCHEMICAL ENGINEERING JOURNAL |
2020-04-15 | |
卷号 | 156页码:6 |
关键词 | Impedance Immunosensor Magnetic Bead Escherichia Coli O157:H7 |
ISSN号 | 1369-703X |
DOI | 10.1016/j.bej.2020.107513 |
英文摘要 | As foodborne pathogen contamination has become a threat to human health worldwide, early detection of pathogen is significant. Traditional electrochemical immunosensors for pathogen detection involve electrode modification or samples adsorption on the electrode which affect the detection sensitivity and electrode reproducibility, thereby limiting their further application in POCT (point of care testing). We established a homogeneous magnetic bead-based electrochemical impedance system using interdigitated gold electrodes as sensing elements for high sensitivity detection of Escherichia coli. (E. coli) O157:H7. The system avoided electrode modification and sample matrix adsorption, and greatly improved detection sensitivity. The detection limit of this method for E.coli O157:H7 was 10(2) colony-forming units per milliliter (CFU mL(-1)), coefficient of variation (CV) < 10 % (n = 3), which was three orders of magnitude lower than the traditional ELISA method, and the linearity detection range was 10(2) CFU mL(-1) to 10(6) CFU mL(-1). This magnetic bead-based impedance method is expected to be used for a wider range of pathogen targets analysis. |
资助项目 | Beijing Nova Program[Z151100000315086] ; Innovation Program of National Defense Science and Technology[17-163-12-ZT-005-029-01] ; National Key Research and Development Program[2016YFC1202502] |
WOS关键词 | Ultrasensitive Electrochemical Immunoassay ; Rapid Detection ; Biosensors ; Nanomaterials ; Bacteria ; Cells ; Water ; Milk ; Food ; Tool |
WOS研究方向 | Biotechnology & Applied Microbiology ; Engineering |
语种 | 英语 |
出版者 | ELSEVIER |
WOS记录号 | WOS:000518151700011 |
资助机构 | Beijing Nova Program ; Innovation Program of National Defense Science and Technology ; National Key Research and Development Program |
内容类型 | 期刊论文 |
源URL | [http://ir.ipe.ac.cn/handle/122111/39482] |
专题 | 中国科学院过程工程研究所 |
通讯作者 | Wang, Chengbin; Wang, Peng; Zhou, Lei |
作者单位 | 1.Chinese Acad Sci, Inst Proc Engn, Natl Key Lab Biochem Engn, PLA Key Lab Biopharmaceut Prod & Formulat Engn, Beijing 100190, Peoples R China 2.Beijing Red Cross Blood Ctr, Blood Grouping Lab, Beijing 100088, Peoples R China 3.Chinese Peoples Liberat Army Gen Hosp, Dept Clin Lab, Beijing 100853, Peoples R China 4.Tsinghua Univ, Dept Precis Instrument, State Key Lab Precis Measurements, Beijing 100084, Peoples R China |
推荐引用方式 GB/T 7714 | Wang, Shujun,Sun, Chongyun,Hu, Qiushi,et al. A homogeneous magnetic bead-based impedance immunosensor for highly sensitive detection of Escherichia coli O157:H7[J]. BIOCHEMICAL ENGINEERING JOURNAL,2020,156:6. |
APA | Wang, Shujun.,Sun, Chongyun.,Hu, Qiushi.,Li, Shuang.,Wang, Chengbin.,...&Zhou, Lei.(2020).A homogeneous magnetic bead-based impedance immunosensor for highly sensitive detection of Escherichia coli O157:H7.BIOCHEMICAL ENGINEERING JOURNAL,156,6. |
MLA | Wang, Shujun,et al."A homogeneous magnetic bead-based impedance immunosensor for highly sensitive detection of Escherichia coli O157:H7".BIOCHEMICAL ENGINEERING JOURNAL 156(2020):6. |
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