1
|
Chen F, Chen D, Deng T, Li J. Combination of alkaline phosphatase/graphene oxide nanoconjugates and D-glucose-6-phosphate–functionalized gold nanoparticles for the rapid colorimetric assay of pathogenic bacteria. Biosens Bioelectron 2022; 216:114611. [DOI: 10.1016/j.bios.2022.114611] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2022] [Revised: 07/26/2022] [Accepted: 07/28/2022] [Indexed: 11/15/2022]
|
2
|
Wu P, Xue F, Zuo W, Yang J, Liu X, Jiang H, Dai J, Ju Y. A Universal Bacterial Catcher Au-PMBA-Nanocrab-Based Lateral Flow Immunoassay for Rapid Pathogens Detection. Anal Chem 2022; 94:4277-4285. [PMID: 35244383 DOI: 10.1021/acs.analchem.1c04909] [Citation(s) in RCA: 36] [Impact Index Per Article: 18.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
In traditional lateral flow immunoassays (LFIA) for pathogens detection, capture antibody (CA) is necessary and usually conjugated to Au nanoparticles (NPs) in order to label the target analyte. However, the acquisition process of the Au-CA nanoprobe is relatively complicated and costly, which will limit the application of LFIA. Herein, p-mercaptophenylboronic acid-modified Au NPs (namely Au-PMBA nanocrabs), were synthesized and applied for a new CA-independent LFIA method. The stable Au-PMBA nanocrabs showed outstanding capability to capture both Gram-negative bacteria and Gram-positive bacteria through covalent bonding. The acquired Au-PMBA-bacteria complexes were dropped onto the strip, and then captured by the detection antibody on the test line (T-line). Take Escherichia coli O157:H7 as an example, the gray value of T-line was proportional to the bacteria concentration and the linear range was 103-107 cfu·mL-1. This CA-independent strategy exhibited higher sensitivity than the traditional CA-dependent double antibody sandwich method, because detection limit of the former one was 103 cfu·mL-1 only by visual observation, which was reduced by 3 orders of magnitude. Besides, this platform successfully screened E. coli O157:H7 in four food samples with recoveries ranging from 90.25% to 107.25%. This CA-independent LFIA showed great advantages and satisfactory potential for rapid foodborne pathogens detection in real samples.
Collapse
Affiliation(s)
- Pengcheng Wu
- College of Pharmacy, China Pharmaceutical University, Nanjing 211198, China
| | - Feng Xue
- MOE Joint International Research Laboratory of Animal Health and Food Safety, Key Laboratory of Animal Bacteriology, Ministry of Agriculture, College of Veterinary Medicine, Nanjing Agricultural University, Nanjing 210095, China
| | - Wanchao Zuo
- College of Pharmacy, China Pharmaceutical University, Nanjing 211198, China
| | - Jun Yang
- Nanjing Institute for Food and Drug Control, Nanjing 210038, China
| | - Xinmei Liu
- Nanjing Institute for Food and Drug Control, Nanjing 210038, China
| | - Hui Jiang
- Nanjing Institute for Food and Drug Control, Nanjing 210038, China
| | - Jianjun Dai
- College of Pharmacy, China Pharmaceutical University, Nanjing 211198, China.,MOE Joint International Research Laboratory of Animal Health and Food Safety, Key Laboratory of Animal Bacteriology, Ministry of Agriculture, College of Veterinary Medicine, Nanjing Agricultural University, Nanjing 210095, China
| | - Yanmin Ju
- College of Pharmacy, China Pharmaceutical University, Nanjing 211198, China
| |
Collapse
|
3
|
Lin L, Zheng Q, Lin J, Yuk HG, Guo L. Immuno- and nucleic acid-based current technique for Salmonella detection in food. Eur Food Res Technol 2020. [DOI: 10.1007/s00217-019-03423-9] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
|
4
|
Heller NC, Garrett AM, Merkley ED, Cendrowski SR, Melville AM, Arce JS, Jenson SC, Wahl KL, Jarman KH. Probabilistic Limit of Detection for Ricin Identification Using a Shotgun Proteomics Assay. Anal Chem 2019; 91:12399-12406. [PMID: 31490662 DOI: 10.1021/acs.analchem.9b02721] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
Robust and highly specific methods for the detection of the protein toxin ricin are of interest to the law enforcement community. In previous studies, methods based on liquid chromatography-tandem mass spectrometry shotgun proteomics have been proposed. The successful implementation of this approach relies on specific data evaluation criteria addressing (1) the quality of the mass spectrometric data, (2) the confidence of peptide identifications (peptide-spectrum matches), and (3) the number and sequence specificity of peptides detected. We present such data evaluation criteria and use a novel approach to establish the limit of detection for this ricin assay. Specifically, we use logistic regression to determine the probability of detection for individual ricin peptides at different concentrations. We then apply basic rules from probability theory, combining these individual peptide probabilities into an overall assay limit of detection. This procedure yields an assay limit of detection for ricin at 42.5 ng on column or 21.25 ng/μL for a 2-μL injection. We also show that, despite the conventional wisdom that detergents are deleterious to mass spectrometric analyses, the presence of Tween-20 did not prevent detection of ricin peptides, and indeed assays performed in buffers that included Tween-20 gave better results than assays performed using other buffer formulations with or without detergent removal.
Collapse
Affiliation(s)
| | - Alaine M Garrett
- National Biodefense Analysis and Countermeasures Center , Operated by BNBI for the U.S. Department of Homeland Security Science and Technology Directorate , Frederick , Maryland , United States
| | | | - Stephen R Cendrowski
- National Biodefense Analysis and Countermeasures Center , Operated by BNBI for the U.S. Department of Homeland Security Science and Technology Directorate , Frederick , Maryland , United States
| | | | | | | | | | | |
Collapse
|
5
|
Bu T, Huang Q, Yan L, Zhang W, Dou L, Huang L, Yang Q, Zhao B, Yang B, Li T, Wang J, Zhang D. Applicability of biological dye tracer in strip biosensor for ultrasensitive detection of pathogenic bacteria. Food Chem 2019; 274:816-821. [DOI: 10.1016/j.foodchem.2018.09.066] [Citation(s) in RCA: 29] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2018] [Revised: 08/08/2018] [Accepted: 09/10/2018] [Indexed: 12/27/2022]
|
6
|
Bu T, Huang Q, Yan L, Huang L, Zhang M, Yang Q, Yang B, Wang J, Zhang D. Ultra technically-simple and sensitive detection for Salmonella Enteritidis by immunochromatographic assay based on gold growth. Food Control 2018. [DOI: 10.1016/j.foodcont.2017.08.036] [Citation(s) in RCA: 52] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
|
7
|
Garrido-Maestu A, Chapela MJ, Peñaranda E, Cabado AG. Re-evaluation of Enhanced qPCR Prevalidated Method for Next-day Detection ofSalmonellaspp.,Shigellaspp.,Escherichia coliO157 andListeria monocytogenes. FOOD BIOTECHNOL 2015. [DOI: 10.1080/08905436.2015.1091977] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
|
8
|
Liu K, Yan X, Mao B, Wang S, Deng L. Aptamer-based detection of Salmonella enteritidis using double signal amplification by Klenow fragment and dual fluorescence. Mikrochim Acta 2015. [DOI: 10.1007/s00604-015-1692-4] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
|
9
|
Ramirez-Martinez ML, Olmos-Ortiz LM, Barajas-Mendiola MA, Giono Cerezo S, Avila EE, Cuellar-Mata P. A PCR procedure for the detection of Giardia intestinalis cysts and Escherichia coli in lettuce. Lett Appl Microbiol 2015; 60:517-23. [PMID: 25689035 DOI: 10.1111/lam.12402] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2014] [Revised: 01/30/2015] [Accepted: 02/01/2015] [Indexed: 11/28/2022]
Abstract
Giardia intestinalis is a pathogen associated with foodborne outbreaks and Escherichia coli is commonly used as a marker of faecal contamination. Implementation of routine identification methods of G. intestinalis is difficult for the analysis of vegetables and the microbiological detection of E. coli requires several days. This study proposes a PCR-based assay for the detection of E. coli and G. intestinalis cysts using crude DNA isolated from artificially contaminated lettuce. The G. intestinalis and E. coli PCR assays targeted the β-giardin and uidA genes, respectively, and were 100% specific. Forty lettuces from local markets were analysed by both PCR and light microscopy and no cysts were detected, the calculated detection limit was 20 cysts per gram of lettuce; however, by PCR, E. coli was detected in eight of ten randomly selected samples of lettuce. These data highlight the need to validate procedures for routine quality assurance. These PCR-based assays can be employed as alternative methods for the detection of G. intestinalis and E. coli and have the potential to allow for the automation and simultaneous detection of protozoa and bacterial pathogens in multiple samples. Significance and impact of the study: There are few studies for Giardia intestinalis detection in food because methods for its identification are difficult for routine implementation. Here, we developed a PCR-based method as an alternative to the direct observation of cysts in lettuce by light microscopy. Additionally, Escherichia coli was detected by PCR and the sanitary quality of lettuce was evaluated using molecular and standard microbiological methods. Using PCR, the detection probability of Giardia cysts inoculated onto samples of lettuce was improved compared to light microscopy, with the advantage of easy automation. These methods may be employed to perform timely and affordable detection of foodborne pathogens.
Collapse
Affiliation(s)
- M L Ramirez-Martinez
- Departamento de Biologia, Division de Ciencias Naturales y Exactas, Universidad de Guanajuato, Guanajuato, Mexico
| | - L M Olmos-Ortiz
- Departamento de Biologia, Division de Ciencias Naturales y Exactas, Universidad de Guanajuato, Guanajuato, Mexico
| | - M A Barajas-Mendiola
- Departamento de Biologia, Division de Ciencias Naturales y Exactas, Universidad de Guanajuato, Guanajuato, Mexico
| | - S Giono Cerezo
- Departamento de Microbiologia, Escuela Nacional de Ciencias Biologicas, Instituto Politecnico Nacional, Delegacion Miguel Hidalgo, DF, Mexico
| | - E E Avila
- Departamento de Biologia, Division de Ciencias Naturales y Exactas, Universidad de Guanajuato, Guanajuato, Mexico
| | - P Cuellar-Mata
- Departamento de Biologia, Division de Ciencias Naturales y Exactas, Universidad de Guanajuato, Guanajuato, Mexico
| |
Collapse
|
10
|
Wang BB, Wang Q, Jin YG, Ma MH, Cai ZX. Two-color quantum dots-based fluorescence resonance energy transfer for rapid and sensitive detection of Salmonella on eggshells. J Photochem Photobiol A Chem 2015. [DOI: 10.1016/j.jphotochem.2014.10.020] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
|
11
|
Erdősi O, Szakmár K, Reichart O, Szili Z, László N, Székely Körmöczy P, Laczay P. Rapid detection of Listeria monocytogenes in raw milk and soft cheese by a redox potential measurement based method combined with real-time PCR. Acta Vet Hung 2014; 62:304-16. [PMID: 25038948 DOI: 10.1556/avet.2014.013] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
The incidence of outbreaks of foodborne listeriosis has indicated the need for a reliable and rapid detection of the microbe in different foodstuffs. A method combining redox potential measurement and real-time polymerase chain reaction (PCR) was developed to detect Listeria monocytogenes in artificially contaminated raw milk and soft cheese. Food samples of 25 g or 25 ml were homogenised in 225 ml of Listeria Enrichment Broth (LEB) with Oxford supplement, and the redox potential measurement technique was applied. For Listeria species the measuring time was maximum 34 h. The absence of L. monocytogenes could reliably be proven by the redox potential measurement method, but Listeria innocua and Bacillus subtilis could not be differentiated from L. monocytogenes on the basis of the redox curves. The presence of L. monocytogenes had to be confirmed by real-time PCR. The combination of these two methods proved to detect < 10 cfu/g of L. monocytogenes in a cost- and time-effective manner. This method can potentially be used as an alternative to the standard nutrient method for the rapid detection of L. monocytogenes in food.
Collapse
Affiliation(s)
- Orsolya Erdősi
- 1 Szent István University Department of Food Hygiene, Faculty of Veterinary Science István u. 2 H-1078 Budapest Hungary
| | - Katalin Szakmár
- 1 Szent István University Department of Food Hygiene, Faculty of Veterinary Science István u. 2 H-1078 Budapest Hungary
| | - Olivér Reichart
- 1 Szent István University Department of Food Hygiene, Faculty of Veterinary Science István u. 2 H-1078 Budapest Hungary
| | - Zsuzsanna Szili
- 1 Szent István University Department of Food Hygiene, Faculty of Veterinary Science István u. 2 H-1078 Budapest Hungary
| | - Noémi László
- 1 Szent István University Department of Food Hygiene, Faculty of Veterinary Science István u. 2 H-1078 Budapest Hungary
| | - Péter Székely Körmöczy
- 1 Szent István University Department of Food Hygiene, Faculty of Veterinary Science István u. 2 H-1078 Budapest Hungary
| | - Péter Laczay
- 1 Szent István University Department of Food Hygiene, Faculty of Veterinary Science István u. 2 H-1078 Budapest Hungary
| |
Collapse
|
12
|
Wang B, Huang X, Ma M, Shi Q, Cai Z. A simple quantum dot-based fluoroimmunoassay method for selective capturing and rapid detection of Salmonella Enteritidis on eggs. Food Control 2014. [DOI: 10.1016/j.foodcont.2013.06.025] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
|
13
|
Garrido A, Chapela MJ, Román B, Fajardo P, Vieites JM, Cabado AG. In-house validation of a multiplex real-time PCR method for simultaneous detection of Salmonella spp., Escherichia coli O157 and Listeria monocytogenes. Int J Food Microbiol 2013; 164:92-8. [PMID: 23624537 DOI: 10.1016/j.ijfoodmicro.2013.03.024] [Citation(s) in RCA: 44] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2012] [Revised: 02/24/2013] [Accepted: 03/26/2013] [Indexed: 10/27/2022]
Abstract
A wide variety of qPCR methods currently exist for Salmonella spp., Escherichia coli O157 and Listeria monocytogenes detection. These methods target several genes and use different detection chemistries, either in simplex or in multiplex formats. However, the majority of these methods have not been carefully validated, and the number of validated methods that use multiplex qPCR is even lower. The aim of the present study was to develop and validate a multiplex qPCR method from previously validated simplex qPCR primers and probes. A modified broth medium was selected and primary and secondary enrichment times were further optimized. Efficiency of the newly combined qPCR system was comprised between 91% and 108%, for simplex and multiplex analyses. A total of 152 food and environmental, natural and spiked samples, were analyzed for the evaluation of the method obtaining values above 91% that were reached for all the quality parameters analyzed. A very low limit of detection (5 cfu/25 g after enrichment) for simultaneous identification of these 3 pathogens was obtained.
Collapse
Affiliation(s)
- Alejandro Garrido
- Microbiology and Toxins Area, ANFACO-CECOPESCA, Campus Univ. 16, 36310 Vigo PO, Spain
| | | | | | | | | | | |
Collapse
|