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Zhao G, Wang YF, Chen J, Yao Y. Predominant Mycotoxins, Pathogenesis, Control Measures, and Detection Methods in Fermented Pastes. Toxins (Basel) 2020; 12:E78. [PMID: 31979410 PMCID: PMC7076863 DOI: 10.3390/toxins12020078] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/02/2020] [Revised: 01/12/2020] [Accepted: 01/21/2020] [Indexed: 12/19/2022] Open
Abstract
Fermented pastes are some of the most popular traditional products in China. Many studies reported a strong possibility that fermented pastes promote exposure to mycotoxins, including aflatoxins, ochratoxins, and cereulide, which were proven to be carcinogenic and neurotoxic to humans. The primary mechanism of pathogenicity is by inhibiting protein synthesis and inducing oxidative stress using cytochrome P450 (CYP) enzymes. The level of mycotoxin production is dependent on the pre-harvest or post-harvest stage. It is possible to implement methods to control mycotoxins by using appropriate antagonistic microorganisms, such as Aspergillus niger, Lactobacillus plantarum, and Saccharomyces cerevisiae isolated from ordinary foods. Also, drying products as soon as possible to avoid condensation or moisture absorption in order to reduce the water activity to lower than 0.82 during storage is also effective. Furthermore, organic acid treatment during the soaking process reduces toxins by more than 90%. Some novel detection technologies based on magnetic adsorption, aptamer probes, and molecular-based methods were applied to rapidly and accurately detect mycotoxins in fermented pastes.
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Affiliation(s)
- Guozhong Zhao
- State Key Laboratory of Food Nutrition and Safety, Key Laboratory of Food Nutrition and Safety, Ministry of Education, College of Food Science and Engineering, Tianjin University of Science & Technology, 300457 Tianjin, China; (G.Z.); (Y.-F.W.)
| | - Yi-Fei Wang
- State Key Laboratory of Food Nutrition and Safety, Key Laboratory of Food Nutrition and Safety, Ministry of Education, College of Food Science and Engineering, Tianjin University of Science & Technology, 300457 Tianjin, China; (G.Z.); (Y.-F.W.)
| | - Junling Chen
- College of Food and Bioengineering, Henan University of Science and Technology, 471023 Luoyang, China;
| | - Yunping Yao
- State Key Laboratory of Food Nutrition and Safety, Key Laboratory of Food Nutrition and Safety, Ministry of Education, College of Food Science and Engineering, Tianjin University of Science & Technology, 300457 Tianjin, China; (G.Z.); (Y.-F.W.)
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52
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Hao L, Wang W, Shen X, Wang S, Li Q, An F, Wu S. A Fluorescent DNA Hydrogel Aptasensor Based on the Self-Assembly of Rolling Circle Amplification Products for Sensitive Detection of Ochratoxin A. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2020; 68:369-375. [PMID: 31829586 DOI: 10.1021/acs.jafc.9b06021] [Citation(s) in RCA: 59] [Impact Index Per Article: 14.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
A sensitive fluorescent DNA hydrogel aptasensor based on the self-assembly of rolling circle amplification (RCA) products was developed for ochratoxin A (OTA) detection in beer. A competitive binding mode of aptamer, complementary sequence, and target was integrated into the DNA hydrogel for OTA detection. The OTA aptamer first combined with the primer to form the hybridized product. Then, in the presence of OTA, the aptamer combined with OTA, which released the primer. The released primer hybridized with the padlock probe to form a circular template, and the RCA reaction was initiated by adding ligase, polymerase, and dNTPs. The fluorescent DNA hydrogel was obtained by adding Cy3-dUTP together with dNTPs, and the fluorescence (FL) intensity of the DNA hydrogel was positively correlated with OTA concentration. Under the optimal experimental conditions, the linear range of the relationship varied from 0.05 ng/mL to 100 ng/mL with a detection limit for OTA of 0.01 ng/mL. The fluorescent DNA hydrogel aptasensor showed good specificity and stability in beer samples. Therefore, the fabricated DNA hydrogel aptasensor shows considerable potential applications in detecting OTA for food safety.
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Affiliation(s)
- Liling Hao
- School of Biotechnology , East China University of Science and Technology , Shanghai 200237 , China
| | - Wei Wang
- School of Biotechnology , East China University of Science and Technology , Shanghai 200237 , China
| | - Xueqing Shen
- School of Biotechnology , East China University of Science and Technology , Shanghai 200237 , China
| | - Shuliu Wang
- School of Biotechnology , East China University of Science and Technology , Shanghai 200237 , China
| | | | - Faliang An
- School of Biotechnology , East China University of Science and Technology , Shanghai 200237 , China
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53
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Wei M, Xin L, Feng S, Liu Y. Simultaneous electrochemical determination of ochratoxin A and fumonisin B1 with an aptasensor based on the use of a Y-shaped DNA structure on gold nanorods. Mikrochim Acta 2020; 187:102. [PMID: 31912309 DOI: 10.1007/s00604-019-4089-y] [Citation(s) in RCA: 26] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2019] [Accepted: 12/17/2019] [Indexed: 01/06/2023]
Abstract
A complementary DNA (cDNA) was designed to simultaneously hybridize with the ochratoxin A (OTA) aptamer and the fumonisin B1 (FB1) aptamer to form a unique Y-shaped DNA structure and to achieve simultaneous detection. Gold nanorods (AuNRs) were used to immobilize thionine (Th), thiolated ferrocene (Fc), thiolated OTA aptamer (Apt1), and thiolated FB1 aptamer (Apt2), to form an amplified signal element and a recognition element. The Apt1-AuNRs-Th complex and the Apt2-AuNRs-Fc complex hybridize with cDNA to form a unique Y-DNA structure on a gold electrode. This produces two initial electrochemical signals [with 177 μΑ cm-2 near -0.2 V, and 3121 μΑ cm-2 near +0.46 V (vs. Ag/AgCl)] by differential pulse voltammetry. Upon addition of 0.1 ng mL-1 OTA and 0.1 ng mL-1 FB1, the aptamers bind the two toxins. This results in the release of Apt1-AuNRs-Th and Apt2-AuNRs-Fc, so the peak currents densities decrease to 115 μΑ cm-2 and 209 μΑ cm-2. The assay allows simultaneous determination of OTA and FB1 in the 1.0 pg·mL-1 to 100 ng·mL-1 concentration ranges, with LODs of 0.47 and 0.26 pg·mL-1. The assay is reproducible, stable and specific. It was applied to the determination of OTA and FB1 in spiked beer, with recoveries between 89.0% and 102.0%. Graphical abstractSchematic representation of OTA and FB1 detection based on Apt2-AuNRs-Fc/Apt1-AuNRs-Th/cDNA/AuE. (AuNRs: Gold nanorods; Th: thionine; Fc: ferrocene; SH: thiol; BSA: Bovine serum albumin; cDNA: Complementary DNA; Apt1: Aptamer1; Apt2: Aptamer2; OTA: Ochratoxin A; FB1: Fumonisin B1).
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Affiliation(s)
- Min Wei
- College of Food Science and Technology, Henan Key Laboratory of Cereal and Oil Food Safety Inspection and Control, Henan University of Technology, No.100 Lianhua Street, Zhengzhou, Henan Province, 450001, People's Republic of China.
| | - Lingkun Xin
- College of Food Science and Technology, Henan Key Laboratory of Cereal and Oil Food Safety Inspection and Control, Henan University of Technology, No.100 Lianhua Street, Zhengzhou, Henan Province, 450001, People's Republic of China
| | - Shuo Feng
- College of Food Science and Technology, Henan Key Laboratory of Cereal and Oil Food Safety Inspection and Control, Henan University of Technology, No.100 Lianhua Street, Zhengzhou, Henan Province, 450001, People's Republic of China
| | - Yong Liu
- College of Chemistry and Chemical Engineering, Henan University, Jin Ming Avenue, Kaifeng, Henan Province, 475004, People's Republic of China
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54
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Shen X, Liu D, Zhu C, Li Y, Liu Y, You T. Photoelectrochemical and electrochemical ratiometric aptasensing: A case study of streptomycin. Electrochem commun 2020. [DOI: 10.1016/j.elecom.2019.106637] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022] Open
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55
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Husain RA, Barman SR, Chatterjee S, Khan I, Lin ZH. Enhanced biosensing strategies using electrogenerated chemiluminescence: recent progress and future prospects. J Mater Chem B 2020; 8:3192-3212. [DOI: 10.1039/c9tb02578b] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
An overview of enhancement strategies for highly sensitive ECL-based sensing of bioanalytes enabling early detection of cancer.
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Affiliation(s)
- Rashaad A. Husain
- Institute of Biomedical Engineering
- National Tsing Hua University
- Hsinchu 30013
- Taiwan
| | - Snigdha Roy Barman
- Institute of Biomedical Engineering
- National Tsing Hua University
- Hsinchu 30013
- Taiwan
| | - Subhodeep Chatterjee
- Department of Power Mechanical Engineering
- National Tsing Hua University
- Hsinchu 30013
- Taiwan
| | - Imran Khan
- Institute of NanoEngineering and MicroSystems
- National Tsing Hua University
- Hsinchu 30013
- Taiwan
| | - Zong-Hong Lin
- Institute of Biomedical Engineering
- National Tsing Hua University
- Hsinchu 30013
- Taiwan
- Department of Power Mechanical Engineering
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56
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Lu HJ, Xu JJ, Zhou H, Chen HY. Recent advances in electrochemiluminescence resonance energy transfer for bioanalysis: Fundamentals and applications. Trends Analyt Chem 2020. [DOI: 10.1016/j.trac.2019.115746] [Citation(s) in RCA: 29] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
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57
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Fu Y, Zou K, Liu M, Zhang X, Du C, Chen J. Highly Selective and Sensitive Photoelectrochemical Sensing Platform for VEGF165 Assay Based on the Switching of Photocurrent Polarity of CdS QDs by Porous Cu 2O-CuO Flower. Anal Chem 2019; 92:1189-1196. [PMID: 31769654 DOI: 10.1021/acs.analchem.9b04319] [Citation(s) in RCA: 70] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Herein, a highly selective and sensitive photoelectrochemical (PEC) sensing platform was developed for vascular endothelial growth factor 165 (VEGF165) assay based on the porous Cu2O-CuO flower-induced photocurrent-polarity switching of the CdS quantum dots (QDs) modified indium-tin oxide (ITO) electrode. The porous Cu2O-CuO flower with uniform size and large surface area was successfully synthesized by taking Cu-MOF (HKUST-1) as the precursor. Through VEGF165-triggered catalytic hairpin assembly process, the porous Cu2O-CuO flower was introduced to the surface of the CdS QDs/ITO electrode, resulting in the switching of the photocurrent polarity from anodic current to cathodic current. Based on the uniform particle size, high specific surface area, good photoelectric conversion efficiency, and photocurrent polarity switching ability of porous Cu2O-CuO flower, the proposed sensing platform showed excellent assay performance for VEGF165 with a linear response range from 1 to 3000 fM, a detection limit of 0.3 fM, and high selectivity. By changing the specific aptamer, the proposed sensing platform could be easily extended to detect other proteins, and may have a promising application in bioanalysis and early disease diagnosis.
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Affiliation(s)
- Yamin Fu
- State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Chemistry and Chemical Engineering , Hunan University , Changsha , 410082 , P.R. China
| | - Kang Zou
- State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Chemistry and Chemical Engineering , Hunan University , Changsha , 410082 , P.R. China
| | - Mengyue Liu
- State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Chemistry and Chemical Engineering , Hunan University , Changsha , 410082 , P.R. China
| | - Xiaohua Zhang
- State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Chemistry and Chemical Engineering , Hunan University , Changsha , 410082 , P.R. China
| | - Cuicui Du
- State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Chemistry and Chemical Engineering , Hunan University , Changsha , 410082 , P.R. China
| | - Jinhua Chen
- State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Chemistry and Chemical Engineering , Hunan University , Changsha , 410082 , P.R. China
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Xiong X, Li Y, Yuan W, Lu Y, Xiong X, Li Y, Chen X, Liu Y. Screen printed bipolar electrode for sensitive electrochemiluminescence detection of aflatoxin B1 in agricultural products. Biosens Bioelectron 2019; 150:111873. [PMID: 31748193 DOI: 10.1016/j.bios.2019.111873] [Citation(s) in RCA: 28] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2019] [Revised: 11/10/2019] [Accepted: 11/11/2019] [Indexed: 12/20/2022]
Abstract
In order to avoid the occurrence of false positives and false negatives caused by improper pretreatment during the detection of aflatoxin B1 by enzyme linked immunosorbent assay (ELISA). In this paper, we developed a screen printed bipolar electrode (BPE) for sensitive electrochemiluminescence (ECL) detection of aflatoxin B1 in agricultural products. The sensor uses a cathode of closed BPE as a functional sensing interface and an anode as a signal collection interface. In this way, the analyte does not need to participate in the ECL reaction of the anode. It avoids direct contact of photoactive molecules with complex reaction systems and greatly broadens the range of applications for ECL. After mixing the test sample with a known fixed concentration of horseradish peroxidase-labeled AFB1 (HRP-AFB1), they compete for binding to monoclonal antibodies. HRP catalyzes the polymerization of aniline to form polyaniline (PANI). Thereby causing a change in the oxidation-reduction potential and the ECL intensity in the electrochemical system, and then achieve the purpose of detecting the AFB1 concentration in the sample. As a result, the sensor has a good analytical performance for AFB1 with a linear range of 0.1-100 ng mL-1 and a detection limit of 0.033 ng mL-1. The sensor avoids the direct contact between the reaction system and the signal measurement system. In recovery experiment for six grains, the results demonstrate that the recovery rate and accuracy of this sensor is better than that of ELISA. This method provides a new idea for the detection of other mycotoxins in grains.
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Affiliation(s)
- Xiaohui Xiong
- Coll Food Sci & Light Ind, Nanjing Tech University, Nanjing, 211816, China
| | - Yafei Li
- Coll Food Sci & Light Ind, Nanjing Tech University, Nanjing, 211816, China
| | - Wei Yuan
- Coll Food Sci & Light Ind, Nanjing Tech University, Nanjing, 211816, China
| | - Yichen Lu
- Coll Food Sci & Light Ind, Nanjing Tech University, Nanjing, 211816, China
| | - Xiong Xiong
- Coll Food Sci & Light Ind, Nanjing Tech University, Nanjing, 211816, China
| | - Yi Li
- Coll Food Sci & Light Ind, Nanjing Tech University, Nanjing, 211816, China
| | - Xiaoye Chen
- Coll Food Sci & Light Ind, Nanjing Tech University, Nanjing, 211816, China.
| | - Yuanjian Liu
- Coll Food Sci & Light Ind, Nanjing Tech University, Nanjing, 211816, China.
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59
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Chen J, Luo Z, Sun C, Huang Z, Zhou C, Yin S, Duan Y, Li Y. Research progress of DNA walker and its recent applications in biosensor. Trends Analyt Chem 2019. [DOI: 10.1016/j.trac.2019.115626] [Citation(s) in RCA: 61] [Impact Index Per Article: 12.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
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60
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Gan H, Wu J, Ju H. Proximity hybridization-induced on particle DNA walker for ultrasensitive protein detection. Anal Chim Acta 2019; 1074:142-149. [PMID: 31159934 DOI: 10.1016/j.aca.2019.05.013] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2019] [Revised: 04/18/2019] [Accepted: 05/05/2019] [Indexed: 11/15/2022]
Abstract
A simple proximity hybridization-induced on particle DNA walker was designed for ultrasensitive detection of proteins, for example platelet-derived growth factor (PDGF-BB) secreted by cancer cells, in which the DNA walker was activated by specific target binding and powered by an enzymatic cleavage to produce amplified signal. High-density FAM-labeled hairpin oligonucleotides (FAM-DNA1) were functionalized on AuNPs to construct three-dimensional (3D) DNA tracks. The specific binding of PDGF-BB with two aptamer probes (DNA3 and DNA4) led to the proximity hybridization-induced DNA displacement and the free of DNA walker (DNA2) to perform movement on the 3D tracks by an enzymatic cleavage, resulting in the release of massive FAM-DNA1 fragments from the AuNPs and the generation of fluorescent signal. This DNA walker based sensing strategy could detect PDGF-BB in a concentration range of 4 orders of magnitude with a detection limit down to sub-pM level. The practical applicability of the assay was demonstrated by detecting PDGF-BB secreted from MCF-7 cells with satisfactory results. The proposed DNA walker based assay could conveniently detect PDGF-BB with high sensitivity and good accuracy, along with the good extensibility of the assay, showing promise for practical diagnosis.
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Affiliation(s)
- Haiying Gan
- State Key Laboratory of Analytical Chemistry for Life Science, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing, 210023, PR China
| | - Jie Wu
- State Key Laboratory of Analytical Chemistry for Life Science, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing, 210023, PR China.
| | - Huangxian Ju
- State Key Laboratory of Analytical Chemistry for Life Science, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing, 210023, PR China
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61
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Wang C, Huang X, Tian X, Zhang X, Yu S, Chang X, Ren Y, Qian J. A multiplexed FRET aptasensor for the simultaneous detection of mycotoxins with magnetically controlled graphene oxide/Fe3O4 as a single energy acceptor. Analyst 2019; 144:6004-6010. [DOI: 10.1039/c9an01593k] [Citation(s) in RCA: 29] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
A multiplexed FRET aptasensor was developed for the simultaneous detection of AFB1 and FB1 with magnetically controlled GO/Fe3O4 as a single energy acceptor.
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Affiliation(s)
- Chengquan Wang
- School of Food and Biological Engineering
- Jiangsu University
- Zhenjiang 212013
- PR China
| | - Xingyi Huang
- School of Food and Biological Engineering
- Jiangsu University
- Zhenjiang 212013
- PR China
| | - Xiaoyu Tian
- School of Food and Biological Engineering
- Jiangsu University
- Zhenjiang 212013
- PR China
| | - Xiaorui Zhang
- School of Food and Biological Engineering
- Jiangsu University
- Zhenjiang 212013
- PR China
| | - Shanshan Yu
- School of Food and Biological Engineering
- Jiangsu University
- Zhenjiang 212013
- PR China
| | - Xianhui Chang
- School of Food and Biological Engineering
- Jiangsu University
- Zhenjiang 212013
- PR China
| | - Yi Ren
- School of Food and Biological Engineering
- Jiangsu University
- Zhenjiang 212013
- PR China
| | - Jing Qian
- School of Chemistry and Chemical Engineering
- Jiangsu University
- Zhenjiang 212013
- PR China
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