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Yang N, Ding N, Qi S, Shang Z, Ma P, Khan IM, Wang Z, Xia Y, Zhang Y, Zhang L. High-affinity truncated aptamers for detection of Cronobacter spp with magnetic separation-assisted DNAzyme-driven 3D DNA walker. Mikrochim Acta 2024; 191:130. [PMID: 38351361 DOI: 10.1007/s00604-024-06199-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2023] [Accepted: 01/07/2024] [Indexed: 02/16/2024]
Abstract
After optimizing the original aptamer sequence by truncation strategy, a magnetic separation-assisted DNAzyme-driven 3D DNA walker fluorescent aptasensor was developed for detecting the food-borne pathogen Cronobacter species. Iron oxide magnetic nanoparticles (MNPs) modified with a hybrid of truncated aptamer probe and DNAzyme strand (AP-E1) denoted as MNPs@AP-E1, were employed as capture probes. Simultaneously, a DNAzyme-driven 3D-DNA walker was utilized as the signal amplification element. The substrate strand (Sub) was conjugated with the gold nanoparticles (AuNPs), resulting in the formation of AuNPs@Sub, which served as a 3D walking track. In the presence of the target bacteria and Mg2+, E1-DNAzyme was activated and moved along AuNPs@Sub, continuously releasing the signal probe. Under optimized conditions, a strong linear correlation was observed for Cronobacter sakazakii (C. sakazakii) in the concentration range 101 to 106 CFU mL-1, with a low detection limit of 2 CFU mL-1. The fluorescence signal responses for different Cronobacter species exhibited insignificant differences, with a relative standard deviation of 3.6%. Moreover, the aptasensor was successfully applied to determine C. sakazakii in real samples with recoveries of 92.86%-108.33%. Therefore, the novel method could be a good candidate for ultra-sensitive and selective detection of Cronobacter species without complex manipulation.
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Affiliation(s)
- Ningru Yang
- State Key Laboratory of Food Science and Resources, School of Food Science and Technology, International Joint Laboratory On Food Safety, Jiangnan University, Wuxi, 214122, China
| | - Ning Ding
- State Key Laboratory of Food Science and Resources, School of Food Science and Technology, International Joint Laboratory On Food Safety, Jiangnan University, Wuxi, 214122, China
| | - Shuo Qi
- State Key Laboratory of Food Science and Resources, School of Food Science and Technology, International Joint Laboratory On Food Safety, Jiangnan University, Wuxi, 214122, China
| | - Zixuan Shang
- State Key Laboratory of Food Science and Resources, School of Food Science and Technology, International Joint Laboratory On Food Safety, Jiangnan University, Wuxi, 214122, China
| | - Pengfei Ma
- State Key Laboratory of Food Science and Resources, School of Food Science and Technology, International Joint Laboratory On Food Safety, Jiangnan University, Wuxi, 214122, China
| | - Imran Mahmood Khan
- State Key Laboratory of Food Science and Resources, School of Food Science and Technology, International Joint Laboratory On Food Safety, Jiangnan University, Wuxi, 214122, China
- College of Ocean Food and Biological Engineering, Jimmie University, Jimei University, Jimei District, Xiamen City, 361021, Fujian Province, China
| | - Zhouping Wang
- State Key Laboratory of Food Science and Resources, School of Food Science and Technology, International Joint Laboratory On Food Safety, Jiangnan University, Wuxi, 214122, China.
- Key Laboratory of Meat Processing of Sichuan, Chengdu University, Chengdu, 610106, China.
- Collaborative Innovation Center of Food Safety and Quality Control in Jiangsu Province, National Engineering Research Center for Functional Food, Jiangnan University, Wuxi, 214122, China.
| | - Yu Xia
- State Key Laboratory of Food Science and Resources, School of Food Science and Technology, International Joint Laboratory On Food Safety, Jiangnan University, Wuxi, 214122, China
| | - Yin Zhang
- Key Laboratory of Meat Processing of Sichuan, Chengdu University, Chengdu, 610106, China
| | - Lili Zhang
- Key Laboratory of Food Quality and Safety of Jiangsu Province-State Key Laboratory Breeding Base, Institute of Food Safety and Nutrition, Jiangsu Academy of Agricultural Sciences, Nanjing, 210014, China
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2
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Wang L, Ke Y, Li Y, Li Y, Yan Y, Song Y, Yang R, Gao B, Han Y. Preparation of polyclonal antibody against a universal bacterial antigen OmpA deduced by bioinformatic analysis and preliminary evaluation of concentration effects on foodborne pathogens. Heliyon 2023; 9:e16353. [PMID: 37251856 PMCID: PMC10208919 DOI: 10.1016/j.heliyon.2023.e16353] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2022] [Revised: 04/21/2023] [Accepted: 05/12/2023] [Indexed: 05/31/2023] Open
Abstract
Rapid and ultrasensitive microbial detection in actual samples have challenges because of target pathogen diversity and low abundance. In this study, we attempted to capture and concentrate multiple pathogens by combining magnetic beads with polyclonal antibodies against a universal antigen of ompA, LAMOA-1, before further detection. A protein sequence consisting of 241 amino acids with spatial conformation similar to E. coli ompA was identified and expressed as a recombinant protein in prokaryotes according to the results of sequence alignment among 432 sequences of ompA belonging to intestinal bacteria from gram-negative bacteria. Purified from immunized rabbits, the anti-LAMOA-1 antibody was shown to effectively recognize 12 foodborne bacterial species. Antibody-conjugated beads were used to concentrate the bacteria when the bacterial concentration in artificially contaminated samples is between 10 and 100 CFU/mL, which shortens detection duration by 8-24 h. The enrichment strategy is potentially beneficial for detection of foodborne pathogens.
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Affiliation(s)
- Lei Wang
- State Key Laboratory of Pathogen and Biosecurity, Beijing Institute of Microbiology and Epidemiology, Beijing 100071, China
- No 32277 Military of PLA, Hami, Xinjiang, 839108, China
| | - Yuehua Ke
- Center for Disease Control and Prevention of Chinese People's Liberation Army, Beijing 10071, China
| | - Ye Li
- State Key Laboratory of Pathogen and Biosecurity, Beijing Institute of Microbiology and Epidemiology, Beijing 100071, China
| | - Yixuan Li
- State Key Laboratory of Pathogen and Biosecurity, Beijing Institute of Microbiology and Epidemiology, Beijing 100071, China
| | - Yanfeng Yan
- State Key Laboratory of Pathogen and Biosecurity, Beijing Institute of Microbiology and Epidemiology, Beijing 100071, China
| | - Yajun Song
- State Key Laboratory of Pathogen and Biosecurity, Beijing Institute of Microbiology and Epidemiology, Beijing 100071, China
| | - Ruifu Yang
- State Key Laboratory of Pathogen and Biosecurity, Beijing Institute of Microbiology and Epidemiology, Beijing 100071, China
| | - Bo Gao
- State Key Laboratory of Pathogen and Biosecurity, Beijing Institute of Microbiology and Epidemiology, Beijing 100071, China
| | - Yanping Han
- State Key Laboratory of Pathogen and Biosecurity, Beijing Institute of Microbiology and Epidemiology, Beijing 100071, China
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3
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Yin M, Wang Z, Xie P, Han L, Li L, Wang H, Qiao X, Deng Q. Fluorescence sensing platform for Cronobacter sakazakii based on the cationic metal-organic frameworks modified upconversion nanoparticles. Food Control 2023. [DOI: 10.1016/j.foodcont.2022.109443] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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4
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Wang S, Liu S, Hao G, Zhao L, Lü X, Wang H, Wang L, Zhang J, Ge W. Antimicrobial activity and mechanism of isothiocyanate from Moringa oleifera seeds against Bacillus cereus and Cronobacter sakazakii and its application in goat milk. Food Control 2022. [DOI: 10.1016/j.foodcont.2022.109067] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
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5
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Yi M, He P, Li J, Zhang J, Lin L, Wang L, Zhao L. A portable toolbox based on time-resolved fluoroimmunoassay and immunomagnetic separation for Cronobacter sakazakii on-site detection in dairy. Int Dairy J 2022. [DOI: 10.1016/j.idairyj.2022.105425] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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6
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Xu X, Zhu L, Wang X, Lan X, Chu H, Tian H, Xu W. Sandwich capture ultrasensitive sensor based on biohybrid interface for the detection of Cronobacter sakazakii. Appl Microbiol Biotechnol 2022; 106:4287-4296. [PMID: 35616722 DOI: 10.1007/s00253-022-11978-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2022] [Revised: 05/04/2022] [Accepted: 05/10/2022] [Indexed: 11/29/2022]
Abstract
A simple, rapid and ultrasensitive visual sensing method for the detection of Cronobacter sakazakii (C. sakazakii) based on a biohybrid interface was established. During the entire sensing process, quadruple-cascade amplification showed its superior sensing performance. First, the prepared immunomagnetic beads (IMB) were used to isolate and enrich specific targets from the food matrix. After adding the fusion aptamer, the aptamer sequence specifically recognized the target and formed the immune sandwich structure of antibody-target-fusion aptamer. In addition, the fusion aptamer also included the template sequence of exponential amplification reaction (EXPAR), which contained the antisense sequence of the G-rich sequence. Therefore, a large number of G-rich sequences can be generated after EXPAR can be triggered in the presence of Bst. DNA polymerase, nicking endonuclease, cDNA, and dNTP. They were self-assembled into G-quadruplex structures and then combined with hemin to form G4/hemin DNAzyme, resulting in visible coloration and measuring absorbance at 450 nm for quantitative detection. The assay showed a limit of detection (LOD) of 2 CFU/mL in pure culture and 12 CFU/g in milk powder in optimal conditions. This method provides a promising strategy for rapid and point-of-care testing (POCT) since it does not require DNA extraction, medium culturing, and expensive instrumentation. KEY POINTS: •Single-cell level detection of C. sakazakii with ultrasensitive and rapidness •The fusion aptamer integrated recognition and amplification •Sensing analysis of C. sakazakii based on cascade amplification of biohybrid interface.
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Affiliation(s)
- Xiuyuan Xu
- College of Food Science and Technology, Hebei Agricultural University, Baoding, Hebei, 071001, People's Republic of China
| | - Longjiao Zhu
- Key Laboratory of Precision Nutrition and Food Quality, Department of Nutrition and Health (Institute of Nutrition and Health), China Agricultural University, Tianxiu Road 10, Beijing, 100083, People's Republic of China
| | - Xinxin Wang
- College of Food Science and Technology, Hebei Agricultural University, Baoding, Hebei, 071001, People's Republic of China
| | - Xinyue Lan
- Key Laboratory of Precision Nutrition and Food Quality, Department of Nutrition and Health (Institute of Nutrition and Health), China Agricultural University, Tianxiu Road 10, Beijing, 100083, People's Republic of China
| | - Huashuo Chu
- Key Laboratory of Safety Assessment of Genetically Modified Organism (Food Safety) (MOA), Beijing Laboratory for Food Quality and Safety, College of Food Science & Nutritional Engineering, Beijing, 100083, People's Republic of China
| | - Hongtao Tian
- College of Food Science and Technology, Hebei Agricultural University, Baoding, Hebei, 071001, People's Republic of China.
| | - Wentao Xu
- Key Laboratory of Precision Nutrition and Food Quality, Department of Nutrition and Health (Institute of Nutrition and Health), China Agricultural University, Tianxiu Road 10, Beijing, 100083, People's Republic of China. .,Key Laboratory of Safety Assessment of Genetically Modified Organism (Food Safety) (MOA), Beijing Laboratory for Food Quality and Safety, College of Food Science & Nutritional Engineering, Beijing, 100083, People's Republic of China.
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Evaluation of the Membrane Damage Mechanism of Chlorogenic Acid against Yersinia enterocolitica and Enterobacter sakazakii and Its Application in the Preservation of Raw Pork and Skim Milk. Molecules 2021; 26:molecules26216748. [PMID: 34771154 PMCID: PMC8587693 DOI: 10.3390/molecules26216748] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2021] [Revised: 11/02/2021] [Accepted: 11/05/2021] [Indexed: 11/17/2022] Open
Abstract
Plant-derived antimicrobial agents have adequate antimicrobial effects on food-borne pathogens, which can be used as food preservatives. The purpose of this study was to evaluate the antibacterial mechanism of chlorogenic acid (CA) against Yersinia enterocolitica and Enterobacter sakazakii. The minimum inhibitory concentration (MIC) of CA was determined by employing the broth microdilution method. Then, the cell function and morphological changes of Y. enterocolitica and E. sakazakii treated with CA were characterized. Finally, the growth inhibition models of Y. enterocolitica in raw pork and E. sakazakii in skim milk were constructed through the response surface methodology. The results demonstrated that CA has a satisfactory inhibitory effect against Y. enterocolitica and E. sakazakii with a MIC of 2.5 mg/mL. In addition, CA inhibited the growth of Y. enterocolitica and E. sakazakii via cell membrane damage, such as depolarization of the cell membrane, reduction in intracellular adenosine triphosphate (ATP) and pH levels, and destruction of cell morphology. Moreover, CA reduced two log cycles of Y. enterocolitica in raw pork and E. sakazakii in skim milk at a certain temperature. According to the corresponding findings, CA has the potential to be developed as an effective preservative to control Y. enterocolitica and E. sakazakii-associated foodborne diseases.
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Yang J, Liang G, Xiang T, Situ W. Effect of crosslinking processing on the chemical structure and biocompatibility of a chitosan-based hydrogel. Food Chem 2021; 354:129476. [PMID: 33752114 DOI: 10.1016/j.foodchem.2021.129476] [Citation(s) in RCA: 21] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2020] [Revised: 01/26/2021] [Accepted: 02/22/2021] [Indexed: 01/08/2023]
Abstract
Chitosan (CS)-based hydrogels with different structures were prepared to ensure the bioavailability of bioactive components. With the electrostatic interaction between CS and anionic crosslinkers, the structure of the CS-based hydrogel changed and influenced the swelling ability, which was beneficial for maintaining bioactive ingredients in the hydrogel. Compared with sodium hexametaphosphate, hydrogels crosslinked by sodium tripolyphosphate (STPP) had a higher swelling capacity and more stable release profile (no more than 10% BSA in the upper gastrointestinal tract), which could deliver bioactive ingredients to the colon. Moreover, due to electrostatic interactions, the surface of the CS-based hydrogel became hydrophilic, which helped Caco2 cells to grow on it. 118.86%-147.22% cell viability was found on the CS-based hydrogel. Furthermore, with different crosslinkers and concentrations in the crosslinking process, the release properties and safety of the hydrogels were varied, but the STPP-crosslinked CS hydrogel presented good cell adhesivity for bioactive components to the colon.
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Affiliation(s)
- Jingwen Yang
- College of Food Science, South China Agricultural University, Guangzhou 510642, China
| | - Gangqiang Liang
- College of Food Science, South China Agricultural University, Guangzhou 510642, China
| | - Tuo Xiang
- College of Food Science, South China Agricultural University, Guangzhou 510642, China
| | - Wenbei Situ
- College of Food Science, South China Agricultural University, Guangzhou 510642, China.
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9
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Labchip-based diagnosis system for on-site application: Sensitive and easy-to-implement detection of single recoverable Cronobacter in infant formula without post-enrichment treatment. Int J Food Microbiol 2020; 327:108659. [PMID: 32413591 DOI: 10.1016/j.ijfoodmicro.2020.108659] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2020] [Revised: 05/06/2020] [Accepted: 05/07/2020] [Indexed: 11/20/2022]
Abstract
Microfluidic labchips have achieved much advancement in the molecular diagnosis of foodborne pathogens. Whereas difficulties in the flow control during the transportation of liquid fluids can occur and should be overcome. Manipulations of reaction temperature and the complex procedures from sample pre-treatment to analysis in a single chip device are major obstacles for the on-site application. Thus, the efficient temperature control of samples without any flow of reaction fluids in microfluidic channels of plastic chip and the simplest protocol omitting post-enrichment processing steps may overcome these limitations represented by the stability and the complexity, respectively. This study aims to develop a novel type of labchip and thermocycler specialized for the gene amplification in microfluidic channels and to evaluate the detectability by sensing the minimum recoverable level of Cronobacter in powdered infant formula (PIF). We developed a thermocycling device accelerating reactions through dual heating-blocks optimized to control temperatures of samples in microfluidic-channels by direct contact with labchip sequentially and repetitively. The structural design of microfluidic channels was to eliminate interference factors associated with the optical detection of fluorescent signals (without distortion due to air bubbles in the reaction chamber). To improve the applicability, a portable device and simplified operation to allow direct loading of samples in the chip without post-enrichment procedures were also adopted. Detection performance was evaluated by a sensitivity/specificity tests using 50 isolates of Cronobacter. Cross-reactivity tests for non-Cronobacter organisms and gDNA [human, raw materials of PIF (cow, soybean)] showed that there was no interference-factor causing false-positive results. In terms of the applied research conducted by using PIF, the enrichment of samples without broth medium (distilled water) displayed outstanding performance and 12 h of incubation facilitated detecting target at concentration as low as 1 CFU/300 g PIF (as initial contamination level) without post-enrichment treatment. Validation of the operation conditions using 30 commercial PIF products was also consistent. The present study presents a novel approach of microfluidic technology with perspective to not only the performance and the practicability [easy-to-implement protocol, portable materials, cost-effectiveness (the use of a miniaturized plastic chip requires a minimum level of materials)] for on-site diagnosis.
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10
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Antibody-biotin-streptavidin-horseradish peroxidase (HRP) sensor for rapid and ultra-sensitive detection of fumonisins. Food Chem 2020; 316:126356. [DOI: 10.1016/j.foodchem.2020.126356] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2019] [Revised: 01/15/2020] [Accepted: 02/03/2020] [Indexed: 12/19/2022]
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11
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Chen J, Tan Z, Wu H, Peng J, Zhai Y, Guo M. Selective enrichment and quantification of okadaic acid in shellfish using an immunomagnetic-bead-based liquid chromatography with tandem mass spectrometry assay. J Sep Sci 2019; 42:1423-1431. [PMID: 30667151 DOI: 10.1002/jssc.201800875] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2018] [Revised: 01/17/2019] [Accepted: 01/17/2019] [Indexed: 11/10/2022]
Abstract
Okadaic acid is a marine biotoxin that primarily occurs in shellfish and can cause diarrheic shellfish poisoning in humans. When analyzing biological samples using liquid chromatography with tandem mass spectrometry, the presence of complex matrices is a major issue. Thus, it is crucial to selectively and simply extract the target analyte from samples and minimize matrix effects simultaneously. To meet this need, an immunomagnetic-bead-based liquid chromatography with tandem mass spectrometry method was developed to detect okadaic acid in shellfish. Magnetic beads bound to monoclonal antibody against okadaic acid were used as affinity probes to specifically enrich okadaic acid in samples, which effectively eliminated matrix effects. A magnetic separator was used to aggregate and separate magnetic particles from sample matrices, and methanol was used to elute okadaic acid from the magnetic beads. Standard solution prepared with methanol was employed directly for quantitative analysis. Several experimental conditions were optimized to improve performance. The method is of interest as a rapid (10 min) sample clean-up and selective enrichment tool, and it showed good linearity and sensitivity, with reported limits of detection and quantitation of 3 and 10 μg/kg, respectively. Fifty-three shellfish samples from an aquatic products market were tested using this method, and four samples positive for okadaic acid were found.
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Affiliation(s)
- Jiaqi Chen
- Key Laboratory of Testing and Evaluation for Aquatic Product Safety and Quality, Ministry of Agriculture and Rural Affairs, Yellow Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Qingdao, P. R. China.,College of Food Science and Engineering, Ocean University of China, Qingdao, P. R. China
| | - Zhijun Tan
- Key Laboratory of Testing and Evaluation for Aquatic Product Safety and Quality, Ministry of Agriculture and Rural Affairs, Yellow Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Qingdao, P. R. China
| | - Haiyan Wu
- Key Laboratory of Testing and Evaluation for Aquatic Product Safety and Quality, Ministry of Agriculture and Rural Affairs, Yellow Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Qingdao, P. R. China
| | - Jixing Peng
- Key Laboratory of Testing and Evaluation for Aquatic Product Safety and Quality, Ministry of Agriculture and Rural Affairs, Yellow Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Qingdao, P. R. China
| | - Yuxiu Zhai
- Key Laboratory of Testing and Evaluation for Aquatic Product Safety and Quality, Ministry of Agriculture and Rural Affairs, Yellow Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Qingdao, P. R. China
| | - Mengmeng Guo
- Key Laboratory of Testing and Evaluation for Aquatic Product Safety and Quality, Ministry of Agriculture and Rural Affairs, Yellow Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Qingdao, P. R. China
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Li J, Wang X, Shan Y, Huang H, Jian D, Xue L, Wang S, Liu F. Handheld Inkjet Printing Paper Chip Based Smart Tetracycline Detector. MICROMACHINES 2019; 10:E27. [PMID: 30609683 PMCID: PMC6356201 DOI: 10.3390/mi10010027] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/25/2018] [Revised: 12/20/2018] [Accepted: 12/27/2018] [Indexed: 12/12/2022]
Abstract
Tetracycline is widely used as medicine for disease treatments and additives in animal feeding. Unfortunately, the abuse of tetracycline inevitably causes tetracycline residue in animal-origin foods. Though classical methods can detect tetracycline in high sensitivity and precision, they often rely on huge and expensive setups as well as complicated and time-consuming operations, limiting their applications in rapid and on-site detection. Here, we propose a handheld inkjet printing paper chip based smart tetracycline detector: tetracycline can be determined by inkjet printing prepared paper chip based enzyme-linked immunosorbent assay (ELISA) with the advantages of high sensitivity, excellent specificity and low cost; moreover, a smartphone based paper chip reader and application is designed for automatically determining tetracycline with simple operations, high precision and fast speed. The smart tetracycline detector with a compact size of 154 mm × 80 mm × 50 mm and self-supplied internal power can reach a rather low detection limit of ~0.05 ng/mL, as proved by practical measurements. It is believed the proposed handheld inkjet printing paper chip based smart tetracycline detector is a potential tool in antibiotic sensing for routine uses at home and on-site detection in the field.
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Affiliation(s)
- Jiahao Li
- Joint International Research Laboratory of Animal Health and Food Safety of Ministry of Education & Single Molecule Nanometry Laboratory (Sinmolab), Nanjing Agricultural University, Nanjing 210095, Jiangsu, China.
| | - Xin Wang
- Joint International Research Laboratory of Animal Health and Food Safety of Ministry of Education & Single Molecule Nanometry Laboratory (Sinmolab), Nanjing Agricultural University, Nanjing 210095, Jiangsu, China.
| | - Yanke Shan
- Joint International Research Laboratory of Animal Health and Food Safety of Ministry of Education & Single Molecule Nanometry Laboratory (Sinmolab), Nanjing Agricultural University, Nanjing 210095, Jiangsu, China.
| | - Huachuan Huang
- School of Manufacturing Science and Engineering, Southwest University of Science and Technology, Mianyang 621010, Sichuan, China.
| | - Dan Jian
- Computational Optics Laboratory, School of Science, Jiangnan University, Wuxi 214122, Jiangsu, China.
| | - Liang Xue
- College of Electronics and Information Engineering, Shanghai University of Electric Power, Shanghai 200090, China.
| | - Shouyu Wang
- Joint International Research Laboratory of Animal Health and Food Safety of Ministry of Education & Single Molecule Nanometry Laboratory (Sinmolab), Nanjing Agricultural University, Nanjing 210095, Jiangsu, China.
- Computational Optics Laboratory, School of Science, Jiangnan University, Wuxi 214122, Jiangsu, China.
| | - Fei Liu
- Joint International Research Laboratory of Animal Health and Food Safety of Ministry of Education & Single Molecule Nanometry Laboratory (Sinmolab), Nanjing Agricultural University, Nanjing 210095, Jiangsu, China.
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Liang P, An R, Li R, Wang D. Comparison of La3+ and mixed rare earths-loaded magnetic chitosan beads for fluoride adsorption. Int J Biol Macromol 2018; 111:255-263. [DOI: 10.1016/j.ijbiomac.2017.12.151] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2017] [Revised: 10/08/2017] [Accepted: 12/28/2017] [Indexed: 10/18/2022]
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14
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Su S, Liu Q, Liu J, Zhang H, Li R, Jing X, Wang J. Enhancing adsorption of U(VI) onto EDTA modified L. cylindrica using epichlorohydrin and ethylenediamine as a bridge. Sci Rep 2017; 7:44156. [PMID: 28272435 PMCID: PMC5341152 DOI: 10.1038/srep44156] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2016] [Accepted: 02/02/2017] [Indexed: 11/08/2022] Open
Abstract
Benefiting from strong coordination ability and unique vascular structure, EDTA modified L. cylindrica opens up an alternative way for uranium recovery from seawater. However, limitations, such as poor adsorption capacity and slow adsorption rate due to low graft ratio of EDTA via one-step esterification block its practical application. Here, a strategy for increasing the graft ratio is proposed in order to improve the adsorption performance. The strategy initially involves immobilization of epichlorohydrin (EPI) onto L. cylindrica and then ethylenediamine (EDA) is introduced via facile ring-opening reaction. EPI and EDA serve as a bridge between L. cylindrica and EDTA. The graft ratio is promoted (15.01 to 21.44%) contributing to the smaller steric hindrance of EPI and EDA than EDTA and improvement in adsorption performance. In addition, the adsorbent prepared by the new strategy exhibits excellent adsorption properties in simulated seawater.
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Affiliation(s)
- Shouzheng Su
- Key Laboratory of Superlight Material and Surface Technology, Ministry of Education, Harbin Engineering University, 150001, P. R. China
| | - Qi Liu
- Institute of Advanced Marine Materials, Harbin Engineering University, 150001, P. R. China
- Harbin Shipbuilding Engineering Design & Research Academy, Harbin, China
| | - Jingyuan Liu
- Key Laboratory of Superlight Material and Surface Technology, Ministry of Education, Harbin Engineering University, 150001, P. R. China
| | - Hongsen Zhang
- Modern Analysis, Test and Research Center, Heilongjiang University of Science and Technology, Harbin 150027, P. R. China
| | - Rumin Li
- Key Laboratory of Superlight Material and Surface Technology, Ministry of Education, Harbin Engineering University, 150001, P. R. China
| | - Xiaoyan Jing
- Key Laboratory of Superlight Material and Surface Technology, Ministry of Education, Harbin Engineering University, 150001, P. R. China
| | - Jun Wang
- Key Laboratory of Superlight Material and Surface Technology, Ministry of Education, Harbin Engineering University, 150001, P. R. China
- Institute of Advanced Marine Materials, Harbin Engineering University, 150001, P. R. China
- Harbin Shipbuilding Engineering Design & Research Academy, Harbin, China
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