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Guo M, Yi Z, Li H, Liu Y, Ding L, Babailov SP, Xiong C, Huang G, Zhang J. NMR Immunosensor Based on a Targeted Gadolinium Nanoprobe for Detecting Salmonella in Milk. Anal Chem 2024; 96:11334-11342. [PMID: 38943569 DOI: 10.1021/acs.analchem.4c01265] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/01/2024]
Abstract
Detecting harmful pathogens in food is not only a crucial aspect of food quality management but also an effective way to ensure public health. In this paper, a complete nuclear magnetic resonance biosensor based on a novel gadolinium (Gd)-targeting molecular probe was developed for the detection of Salmonella in milk. First, streptavidin was conjugated to the activated macromolecular polyaspartic acid (PASP) via an amide reaction to generate SA-PASP. Subsequently, the strong chelating and adsorption properties of PASP toward the lanthanide metal gadolinium ions were exploited to generate the magnetic complex (SA-PASP-Gd). Finally, the magnetic complex was linked to biotinylated antibodies to obtain the bioprobe and achieve the capture of Salmonella. Under optimal experimental conditions, the sensor we have constructed can achieve a rapid detection of Salmonella within 1.5 h, with a detection limit of 7.1 × 103 cfu mL-1.
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Affiliation(s)
- Mengdi Guo
- State Key Laboratory of Food Science and Technology, Nanchang University, Nanchang 330047, P. R. China
| | - Zhibin Yi
- State Key Laboratory of Food Science and Technology, Nanchang University, Nanchang 330047, P. R. China
| | - Huo Li
- State Key Laboratory of Food Science and Technology, Nanchang University, Nanchang 330047, P. R. China
| | - Yang Liu
- State Key Laboratory of Food Science and Technology, Nanchang University, Nanchang 330047, P. R. China
| | - Liping Ding
- State Key Laboratory of Food Science and Technology, Nanchang University, Nanchang 330047, P. R. China
| | - Sergey P Babailov
- A.V. Nikolaev Institute of Inorganic Chemistry, Siberian Branch of the Russian Academy of Sciences, Avenue Lavrentyev 3, Novosibirsk 630090, Russian Federation
| | - Chunhong Xiong
- State Key Laboratory of Food Science and Technology, Nanchang University, Nanchang 330047, P. R. China
| | - Ganhui Huang
- State Key Laboratory of Food Science and Technology, Nanchang University, Nanchang 330047, P. R. China
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Zhou C, Zhao Y, Guo B, Yang M, Xu Q, Lei C, Wang H. Establishment of a Simple, Sensitive, and Specific Salmonella Detection Method Based on Recombinase-Aided Amplification Combined with dsDNA-Specific Nucleases. Foods 2024; 13:1380. [PMID: 38731750 PMCID: PMC11083397 DOI: 10.3390/foods13091380] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2024] [Revised: 04/22/2024] [Accepted: 04/26/2024] [Indexed: 05/13/2024] Open
Abstract
Salmonella is a common foodborne pathogen that can cause food poisoning, posing a serious threat to human health. Therefore, quickly, sensitively, and accurately detecting Salmonella is crucial to ensuring food safety. For the Salmonella hilA gene, we designed Recombinase-aided amplification (RAA) primers and dsDNA-specific nuclease (DNase) probes. The ideal primer and probe combination was found when conditions were optimized. Under UV light, a visual Salmonella detection technique (RAA-dsDNase) was developed. Additionally, the RAA-dsDNase was modified to further reduce pollution hazards and simplify operations. One-pot RAA-dsDNase-UV or one-pot RAA-dsDNase-LFD was developed as a Salmonella detection method, using UV or a lateral flow dipstick (LFD) for result observation. Among them, one-pot RAA-dsDNase and one-pot RAA-dsDNase-LFD had detection times of 50 min and 60 min, respectively, for detecting Salmonella genomic DNA. One-pot RAA-dsDNase-UV had a detection limit of 101 copies/μL and 101 CFU/mL, while one-pot RAA-dsDNase-LFD had a sensitivity of 102 copies/μL and 102 CFU/mL. One-pot RAA-dsDNase-UV and one-pot RAA-dsDNase-LFD assays may identify 17 specific Salmonella serovars witho ut causing a cross-reaction with the remaining 8 bacteria, which include E. coli. Furthermore, Salmonella in tissue and milk samples has been reliably detected using both approaches. Overall, the detection method developed in this study can quickly, sensitively, and accurately detect Salmonella, and it is expected to become an important detection tool for the prevention and control of Salmonella in the future.
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Affiliation(s)
- Changyu Zhou
- Key Laboratory of Bio-Resource and Eco-Environment of Ministry of Education, College of Life Sciences, Sichuan University, Chengdu 610017, China; (C.Z.); (Y.Z.); (B.G.)
- Animal Disease Prevention and Food Safety Key Laboratory of Sichuan Province, Chengdu 610064, China
| | - Yu Zhao
- Key Laboratory of Bio-Resource and Eco-Environment of Ministry of Education, College of Life Sciences, Sichuan University, Chengdu 610017, China; (C.Z.); (Y.Z.); (B.G.)
- Animal Disease Prevention and Food Safety Key Laboratory of Sichuan Province, Chengdu 610064, China
| | - Boyan Guo
- Key Laboratory of Bio-Resource and Eco-Environment of Ministry of Education, College of Life Sciences, Sichuan University, Chengdu 610017, China; (C.Z.); (Y.Z.); (B.G.)
- Animal Disease Prevention and Food Safety Key Laboratory of Sichuan Province, Chengdu 610064, China
| | - Ming Yang
- Key Laboratory of Bio-Resource and Eco-Environment of Ministry of Education, College of Life Sciences, Sichuan University, Chengdu 610017, China; (C.Z.); (Y.Z.); (B.G.)
- Animal Disease Prevention and Food Safety Key Laboratory of Sichuan Province, Chengdu 610064, China
| | - Qiang Xu
- Key Laboratory of Bio-Resource and Eco-Environment of Ministry of Education, College of Life Sciences, Sichuan University, Chengdu 610017, China; (C.Z.); (Y.Z.); (B.G.)
- Animal Disease Prevention and Food Safety Key Laboratory of Sichuan Province, Chengdu 610064, China
| | - Changwei Lei
- Key Laboratory of Bio-Resource and Eco-Environment of Ministry of Education, College of Life Sciences, Sichuan University, Chengdu 610017, China; (C.Z.); (Y.Z.); (B.G.)
- Animal Disease Prevention and Food Safety Key Laboratory of Sichuan Province, Chengdu 610064, China
| | - Hongning Wang
- Key Laboratory of Bio-Resource and Eco-Environment of Ministry of Education, College of Life Sciences, Sichuan University, Chengdu 610017, China; (C.Z.); (Y.Z.); (B.G.)
- Animal Disease Prevention and Food Safety Key Laboratory of Sichuan Province, Chengdu 610064, China
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Song D, Su Q, Jia A, Fu S, Ma X, Li T, Man C, Yang X, Jiang Y. A Method to Directly Identify Cronobacter sakazakii in Liquid Medium by MALDI-TOF MS. Foods 2023; 12:foods12101981. [PMID: 37238798 DOI: 10.3390/foods12101981] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2023] [Revised: 04/11/2023] [Accepted: 05/11/2023] [Indexed: 05/28/2023] Open
Abstract
Matrix-assisted laser desorption ionization time-of-flight mass spectrometry has been widely used as an emerging technology for the rapid identification of microorganisms. Cronobacter sakazakii (C. sakazakii) is a food-borne pathogen of particular importance to the powdered infant formula (PIF) processing environment due to its high lethality in infants. However, the traditional solid spotting detection method of pretreating samples for MALDI-TOF MS leads only to qualitative detection of C. sakazakii. We developed a new, low-cost, robust liquid spotting pretreatment method and used a response surface methodology to optimize its parameters. The applicability, accuracy, and quantitative potential were measured for different types of samples. The optimal parameters of this method were as follows: a volume of 70% formic acid of 25 μL, treatment with ultrasound at 350 W for 3 min, and a volume of acetonitrile added of 75 μL. These conditions led to the highest identification score for C. sakazakii (1926.42 ± 48.497). This method was found to detect bacteria accurately and reproducibly. When 70 strains of C. sakazakii isolates were analyzed with this method, the identification accuracy was 100%. The detection limit of C. sakazakii in environmental and PIF samples was 4.1 × 101 cfu/mL and 2.72 × 103 cfu/mL, respectively.
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Affiliation(s)
- Danliangmin Song
- Department of Food Science, Northeast Agricultural University, Harbin 150038, China
| | - Qunchao Su
- Department of Food Science, Northeast Agricultural University, Harbin 150038, China
| | - Ai Jia
- Department of Food Science, Northeast Agricultural University, Harbin 150038, China
| | - Shiqian Fu
- Key Laboratory of Animal Protein Food Deep Processing Technology of Zhejiang Province, College of Food and Pharmaceutical Sciences, Ningbo University, Ningbo 315800, China
| | - Xiaoming Ma
- Department of Food Science, Northeast Agricultural University, Harbin 150038, China
| | - Tiantian Li
- Department of Food Science, Northeast Agricultural University, Harbin 150038, China
| | - Chaoxin Man
- Department of Food Science, Northeast Agricultural University, Harbin 150038, China
| | - Xinyan Yang
- Key Laboratory of Dairy Science, Ministry of Education, Harbin 150030, China
| | - Yujun Jiang
- Department of Food Science, Northeast Agricultural University, Harbin 150038, China
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Lv X, Cao W, Zhang H, Zhang Y, Shi L, Ye L. CE-RAA-CRISPR Assay: A Rapid and Sensitive Method for Detecting Vibrio parahaemolyticus in Seafood. Foods 2022; 11:foods11121681. [PMID: 35741880 PMCID: PMC9223090 DOI: 10.3390/foods11121681] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2022] [Revised: 05/28/2022] [Accepted: 05/31/2022] [Indexed: 01/27/2023] Open
Abstract
Vibrio parahaemolyticus is one of the major pathogenic Vibrio species that contaminate seafood. Rapid and accurate detection is crucial for avoiding foodborne diseases caused by pathogens and is important for food safety management and mariculture. In this study, we established a system that combines chemically enhanced clustered regularly interspaced short palindromic repeats (CRISPR) and recombinase-aided amplification (RAA) (CE–RAA–CRISPR) for detecting V. parahaemolyticus in seafood. The method combines RAA with CRISPR-associated protein 12a (Cas12a) for rapid detection in a one-pot reaction, effectively reducing the risk of aerosol contamination during DNA amplifier transfer. We optimized the primers for V. parahaemolyticus, determined the optimal crRNA/Cas12a ratio, and demonstrated that chemical additives (bovine serum albumin and L-proline) could enhance the detection capacity of Cas12a. The limit of detection (at optimal conditions) was as low as 6.7 × 101 CFU/mL in pure cultures and 7.3 × 101 CFU/g in shrimp. Moreover, this method exhibited no cross-reactivity with other microbial pathogens. The CE–RAA–CRISPR assay was compared with the quantitative polymerase chain reaction assay using actual food samples, and it showed 100% diagnostic agreement.
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Affiliation(s)
- Xinrui Lv
- Institute of Food Safety and Nutrition, Jinan University, Guangzhou 510632, China; (X.L.); (H.Z.); (Y.Z.); (L.S.)
| | - Weiwei Cao
- College of Food and Bioengineering, Guangdong Polytechnic of Science and Trade, Guangzhou 510640, China;
| | - Huang Zhang
- Institute of Food Safety and Nutrition, Jinan University, Guangzhou 510632, China; (X.L.); (H.Z.); (Y.Z.); (L.S.)
| | - Yilin Zhang
- Institute of Food Safety and Nutrition, Jinan University, Guangzhou 510632, China; (X.L.); (H.Z.); (Y.Z.); (L.S.)
| | - Lei Shi
- Institute of Food Safety and Nutrition, Jinan University, Guangzhou 510632, China; (X.L.); (H.Z.); (Y.Z.); (L.S.)
| | - Lei Ye
- Institute of Food Safety and Nutrition, Jinan University, Guangzhou 510632, China; (X.L.); (H.Z.); (Y.Z.); (L.S.)
- Correspondence:
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Gao S, Sun C, Hong H, Gooneratne R, Mutukumira A, Wu X. Rapid detection of viable Cronobacter sakazakii in powdered infant formula using improved propidium monoazide (PMAxx) and quantitative recombinase polymerase amplification (qRPA) assay. Food Control 2021. [DOI: 10.1016/j.foodcont.2021.107899] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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Xie X, Liu Z. Simultaneous enumeration of Cronobacter sakazakii and Staphylococcus aureus in powdered infant foods through duplex TaqMan real-time PCR. Int Dairy J 2021. [DOI: 10.1016/j.idairyj.2021.105019] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
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Ren Y, Gao P, Song Y, Yang X, Yang T, Chen S, Fu S, Qin X, Shao M, Man C, Jiang Y. An aptamer-exonuclease III (Exo III)-assisted amplification-based lateral flow assay for sensitive detection of Escherichia coli O157:H7 in milk. J Dairy Sci 2021; 104:8517-8529. [PMID: 33896635 DOI: 10.3168/jds.2020-19939] [Citation(s) in RCA: 25] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2020] [Accepted: 03/22/2021] [Indexed: 01/02/2023]
Abstract
Escherichia coli O157:H7 (E. coli O157:H7), one of the most widespread foodborne pathogens, can cause a series of diseases and even lead to death. In this study, a highly sensitive method was developed by combining aptamer-exonuclease III (Exo III)-assisted amplification with lateral flow assay (LFA) based on gold nanoparticles (AuNP). The compound of single-stranded (ss) DNA-anti-E. coli O157:H7 aptamer (ssDNA-aptamer) was formed by hybridization between designed target ssDNA and aptamer. When E. coli O157:H7 was present, target bacteria were bound with the aptamer, and the free target ssDNA was hybridized with the probes of the designed hairpin (HP) structure. Exo III digests the 3' double-stranded blunt end of the complex and releases the enzyme product. Because the remaining sequence of the HP of the designed enzyme product was the same as the target ssDNA sequence, the target ssDNA could be amplified. Finally, the enhanced target ssDNA was combined with AuNP-LFA to achieve visual detection of E. coli O157:H7. The quantitative ability of this platform for E. coli O157:H7 was 7.6 × 101 cfu/mL in pure culture, and the detection limit in milk was 8.35 × 102 cfu/mL. This LFA was highly specific to E. coli O157:H7, and the time for detection of E. coli O157:H7 in milk was 4 h. Hence, this system has important application prospects in the detection of pathogenic bacteria in dairy products.
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Affiliation(s)
- Yuwei Ren
- Key Laboratory of Dairy Science, Ministry of Education, College of Food Science, Northeast Agricultural University, Harbin, China, 150030
| | - Pingping Gao
- Key Laboratory of Dairy Science, Ministry of Education, College of Food Science, Northeast Agricultural University, Harbin, China, 150030
| | - Yang Song
- Key Laboratory of Dairy Science, Ministry of Education, College of Food Science, Northeast Agricultural University, Harbin, China, 150030
| | - Xinyan Yang
- Key Laboratory of Dairy Science, Ministry of Education, College of Food Science, Northeast Agricultural University, Harbin, China, 150030
| | - Tao Yang
- Key Laboratory of Dairy Science, Ministry of Education, College of Food Science, Northeast Agricultural University, Harbin, China, 150030
| | - Sihan Chen
- Key Laboratory of Dairy Science, Ministry of Education, College of Food Science, Northeast Agricultural University, Harbin, China, 150030
| | - Shiqian Fu
- Key Laboratory of Dairy Science, Ministry of Education, College of Food Science, Northeast Agricultural University, Harbin, China, 150030
| | - Xue Qin
- Key Laboratory of Dairy Science, Ministry of Education, College of Food Science, Northeast Agricultural University, Harbin, China, 150030
| | - Meili Shao
- Key Laboratory of Dairy Science, Ministry of Education, College of Food Science, Northeast Agricultural University, Harbin, China, 150030
| | - Chaoxin Man
- Key Laboratory of Dairy Science, Ministry of Education, College of Food Science, Northeast Agricultural University, Harbin, China, 150030.
| | - Yujun Jiang
- Key Laboratory of Dairy Science, Ministry of Education, College of Food Science, Northeast Agricultural University, Harbin, China, 150030.
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Zhao L, Wang J, Sun XX, Wang J, Chen Z, Xu X, Dong M, Guo YN, Wang Y, Chen P, Gao W, Geng Y. Development and Evaluation of the Rapid and Sensitive RPA Assays for Specific Detection of Salmonella spp. in Food Samples. Front Cell Infect Microbiol 2021; 11:631921. [PMID: 33718280 PMCID: PMC7946851 DOI: 10.3389/fcimb.2021.631921] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2020] [Accepted: 01/19/2021] [Indexed: 11/16/2022] Open
Abstract
Salmonella spp. is among the main foodborne pathogens which cause serious foodborne diseases. An isothermal real-time recombinase polymerase amplification (RPA) and lateral flow strip detection (LFS RPA) were used to detect Salmonella spp. targeting the conserved sequence of invasion protein A (invA). The Real-time RPA was performed in a portable florescence scanner at 39°C for 20 min. The LFS RPA was performed in an incubator block at 39°C for 15 min, under the same condition that the amplifications could be inspected by the naked eyes on the LFS within 5 min. The detection limit of Salmonella spp. DNA using real-time RPA was 1.1 × 101 fg, which was the same with real-time PCR but 10 times higher than that of LFS RPA assay. Moreover, the practicality of discovering Salmonella spp. was validated with artificially contaminated lamb, chicken, and broccoli samples. The analyzing time dropped from 60 min to proximately 5–12 min on the basis of the real-time and LFS RPA assays compared with the real-time PCR assay. Real-time and LFS RPA assays’ results were equally reliable. There was no cross-reactivity with other pathogens in both assays. In addition, the assays had good stability. All of these helped to show that the developed RPA assays were simple, rapid, sensitive, credible, and could be a potential point-of-need (PON) test required mere resources.
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Affiliation(s)
- Liwei Zhao
- Heibei Key Laboratory of Chinese Medicine Research on Cardiocerebrovascular Disease, Hebei University of Chinese Medicine, Shijiazhuang, China
| | - Jianchang Wang
- Food Microbiology and Animal Quarantine Laboratory, Technology Center of Shijiazhuang Customs, Shijiazhuang, China
| | - Xiao Xia Sun
- Food Microbiology and Animal Quarantine Laboratory, Technology Center of Shijiazhuang Customs, Shijiazhuang, China
| | - Jinfeng Wang
- Food Microbiology and Animal Quarantine Laboratory, Technology Center of Shijiazhuang Customs, Shijiazhuang, China
| | - Zhimin Chen
- Food Microbiology and Animal Quarantine Laboratory, Technology Center of Shijiazhuang Customs, Shijiazhuang, China
| | - Xiangdong Xu
- School of Public Health, Key Laboratory of Environment and Human Health, Hebei Medical University, Shijiazhuang, China
| | - Mengyuan Dong
- Heibei Key Laboratory of Chinese Medicine Research on Cardiocerebrovascular Disease, Hebei University of Chinese Medicine, Shijiazhuang, China
| | - Ya-Nan Guo
- Heibei Key Laboratory of Chinese Medicine Research on Cardiocerebrovascular Disease, Hebei University of Chinese Medicine, Shijiazhuang, China
| | - Yuanyuan Wang
- Heibei Key Laboratory of Chinese Medicine Research on Cardiocerebrovascular Disease, Hebei University of Chinese Medicine, Shijiazhuang, China
| | - Pingping Chen
- Heibei Key Laboratory of Chinese Medicine Research on Cardiocerebrovascular Disease, Hebei University of Chinese Medicine, Shijiazhuang, China
| | - Weijuan Gao
- Heibei Key Laboratory of Chinese Medicine Research on Cardiocerebrovascular Disease, Hebei University of Chinese Medicine, Shijiazhuang, China
| | - Yunyun Geng
- Heibei Key Laboratory of Chinese Medicine Research on Cardiocerebrovascular Disease, Hebei University of Chinese Medicine, Shijiazhuang, China
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