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Tan H, Qiu Y, Chen S, Chen X, Wu Y, He S, Li X, Chen H. A rapid immunomagnetic beads-based sELISA method for the detection of bovine αs1-casein based on specific epitopes. Food Chem 2024; 444:138565. [PMID: 38340505 DOI: 10.1016/j.foodchem.2024.138565] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2023] [Revised: 01/15/2024] [Accepted: 01/22/2024] [Indexed: 02/12/2024]
Abstract
Although αs1-casein poses significant health risks to individuals with milk allergies, the availability of quantification methods for this allergen remains limited. In this study, we developed an immunomagnetic beads-based immunoassay (IMBs-ELISA) for the precise quantitative detection of bovine αs1-CN, specifically targeting epitope AA173-194. No cross-reactivity was observed with the other 7 food allergens including milk allergen. The linear detection range of the established IMBs-ELISA method was 0.125 μg/mL-2.000 μg/mL, with a limit of detection of 0.099 μg/mL. The accuracy of this method was 1.048 %, and the intra-plate and inter-plate precision achieved 4.100 % and 6.777 %, respectively. Notably, the entire IMBs-ELISA process could be completed within 75 min, representing a substantial time-saving advantage over traditional ELISA methods. These results proved the reliability and rapidity of the IMBs-ELISA method for detecting αs1-CN in real food.
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Affiliation(s)
- Hongkai Tan
- State Key Laboratory of Food Science and Resources, Nanchang University, Nanchang 330047, PR China; School of Food Science and Technology, Nanchang University, Nanchang 330047, PR China
| | - Yu Qiu
- State Key Laboratory of Food Science and Resources, Nanchang University, Nanchang 330047, PR China; School of Food Science and Technology, Nanchang University, Nanchang 330047, PR China
| | - Siyi Chen
- State Key Laboratory of Food Science and Resources, Nanchang University, Nanchang 330047, PR China; School of Food Science and Technology, Nanchang University, Nanchang 330047, PR China
| | - Xintong Chen
- State Key Laboratory of Food Science and Resources, Nanchang University, Nanchang 330047, PR China; School of Food Science and Technology, Nanchang University, Nanchang 330047, PR China
| | - Yong Wu
- State Key Laboratory of Food Science and Resources, Nanchang University, Nanchang 330047, PR China; Sino-German Joint Research Institute, Nanchang University, Nanchang 330047, PR China; Jiangxi Provincial Key Laboratory of Food Allergy, Nanchang University, Nanchang 330047, PR China
| | - Shengfa He
- School of Public Health and Health Management, Gannan Medical University, Ganzhou 341000, PR China
| | - Xin Li
- State Key Laboratory of Food Science and Resources, Nanchang University, Nanchang 330047, PR China; School of Food Science and Technology, Nanchang University, Nanchang 330047, PR China; Jiangxi Provincial Key Laboratory of Food Allergy, Nanchang University, Nanchang 330047, PR China.
| | - Hongbing Chen
- State Key Laboratory of Food Science and Resources, Nanchang University, Nanchang 330047, PR China; Sino-German Joint Research Institute, Nanchang University, Nanchang 330047, PR China; Jiangxi Provincial Key Laboratory of Food Allergy, Nanchang University, Nanchang 330047, PR China
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2
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Jennings CC, Freidenberger M, Christensen SA, Conlin J, Freidenberger O, Kenealey JD. Thermal characterization and separation of whey proteins by differential scanning calorimetry. Food Chem 2024; 441:138347. [PMID: 38183724 DOI: 10.1016/j.foodchem.2023.138347] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2023] [Revised: 12/16/2023] [Accepted: 12/30/2023] [Indexed: 01/08/2024]
Abstract
Most commercially available whey products contain a mixture of 6-7 whey proteins; however, there is an increased focus on using the individual whey proteins for their unique biological activities. Before extracting individual whey proteins for use, it is important to quantify how much of a particular protein is present in whey mixtures as well as if the protein is still structurally folded. We first characterized the denaturation temperature and enthalpy values for the six purified whey proteins at six pHs (3-9) and under ion chelation using a nano-differential scanning calorimeter (DSC). From the individual protein scans, we determined the optimal condition for detecting all 6 proteins on a single DSC scan was whey in an EDTA MOPs pH 6.7 buffer.
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Affiliation(s)
- Charity C Jennings
- Department of Nutrition, Dietetics, and Food Science, Brigham Young University, UT 84606, United States
| | - McCall Freidenberger
- Department of Nutrition, Dietetics, and Food Science, Brigham Young University, UT 84606, United States
| | - Shawn A Christensen
- Department of Nutrition, Dietetics, and Food Science, Brigham Young University, UT 84606, United States
| | - Joy Conlin
- Department of Nutrition, Dietetics, and Food Science, Brigham Young University, UT 84606, United States
| | - Olivia Freidenberger
- Department of Nutrition, Dietetics, and Food Science, Brigham Young University, UT 84606, United States
| | - Jason D Kenealey
- Department of Nutrition, Dietetics, and Food Science, Brigham Young University, UT 84606, United States.
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3
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Ansari MA. Nanotechnology in Food and Plant Science: Challenges and Future Prospects. PLANTS (BASEL, SWITZERLAND) 2023; 12:2565. [PMID: 37447126 DOI: 10.3390/plants12132565] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/06/2023] [Revised: 06/24/2023] [Accepted: 06/29/2023] [Indexed: 07/15/2023]
Abstract
Globally, food safety and security are receiving a lot of attention to ensure a steady supply of nutrient-rich and safe food. Nanotechnology is used in a wide range of technical processes, including the development of new materials and the enhancement of food safety and security. Nanomaterials are used to improve the protective effects of food and help detect microbial contamination, hazardous chemicals, and pesticides. Nanosensors are used to detect pathogens and allergens in food. Food processing is enhanced further by nanocapsulation, which allows for the delivery of bioactive compounds, increases food bioavailability, and extends food shelf life. Various forms of nanomaterials have been developed to improve food safety and enhance agricultural productivity, including nanometals, nanorods, nanofilms, nanotubes, nanofibers, nanolayers, and nanosheets. Such materials are used for developing nanofertilizers, nanopesticides, and nanomaterials to induce plant growth, genome modification, and transgene expression in plants. Nanomaterials have antimicrobial properties, promote plants' innate immunity, and act as delivery agents for active ingredients. Nanocomposites offer good acid-resistance capabilities, effective recyclability, significant thermostability, and enhanced storage stability. Nanomaterials have been extensively used for the targeted delivery and release of genes and proteins into plant cells. In this review article, we discuss the role of nanotechnology in food safety and security. Furthermore, we include a partial literature survey on the use of nanotechnology in food packaging, food safety, food preservation using smart nanocarriers, the detection of food-borne pathogens and allergens using nanosensors, and crop growth and yield improvement; however, extensive research on nanotechnology is warranted.
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Affiliation(s)
- Mohammad Azam Ansari
- Department of Epidemic Disease Research, Institute for Research and Medical Consultations (IRMC), Imam Abdulrahman Bin Faisal University, P.O. Box 1982, Dammam 31441, Saudi Arabia
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4
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Site-specific labeling of antibodies with quantum dots could promote to retain the antigen binding capacity of antibodies. Food Chem 2023; 413:135655. [PMID: 36796266 DOI: 10.1016/j.foodchem.2023.135655] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2022] [Revised: 01/20/2023] [Accepted: 02/06/2023] [Indexed: 02/10/2023]
Abstract
A major concern with antibody labeling is the decreased antigen affinity binding capacity of antibodies, owing mainly to the randomly oriented binding of the marker. Herein, a universal approach for site-specific photocrosslinking of quantum dots (QDs) to the Fc-terminal of antibodies was investigated utilizing antibody Fc-terminal affinity proteins. Results showed that the QDs only bound to the heavy chain of the antibody. Further comparative tests confirmed that the site-specific directed labeling approach maximizes the retention of the antigen-binding capacity of the natural antibody. Compared with the commonly employed random orientation labeling approach, the directional labeling approach allows the labeled antibody showed 6 times greater binding affinity to antigen. QDs-labeled monoclonal antibodies were applied to fluorescent immunochromatographic test strips for the detection of shrimp tropomyosin (TM). The established procedure has a detection limit of 0.054 μg/mL. Thus, the site-specific labeling approach significantly improves the antigen binding capacity of the labeled antibody.
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5
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Au@Ag-labeled SERS lateral flow assay for highly sensitive detection of allergens in milk. FOOD SCIENCE AND HUMAN WELLNESS 2023. [DOI: 10.1016/j.fshw.2022.09.027] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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6
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Li R, Zhang Y, Zhao J, Wang Y, Wang H, Zhang Z, Lin H, Li Z. Quantum-dot-based sandwich lateral flow immunoassay for the rapid detection of shrimp major allergen tropomyosin. J Food Compost Anal 2022. [DOI: 10.1016/j.jfca.2022.104776] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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7
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Liu R, Zhang F, Shi M, Sang Y, Wang X. In vitro selection and optimization of high-affinity aptamer for milk allergen α-lactalbumin and its application in dual-mode detection. Front Nutr 2022; 9:1005230. [PMID: 36267907 PMCID: PMC9577226 DOI: 10.3389/fnut.2022.1005230] [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: 07/28/2022] [Accepted: 09/14/2022] [Indexed: 11/13/2022] Open
Abstract
Milk is one of the most common sources of protein in people’s daily lives, and it is also recognized by the World Health Organization (WHO) as one of the eight categories of food allergies to human beings. α-lactalbumin (α-La) is the main cause of milk allergy. In this study, a single-stranded DNA aptamer with high binding affinity to α-La were selected using systematic evolution of ligands by exponential enrichment (SELEX) method. Compared with the full-length sequence, the binding affinity of the truncated aptamer LA-1t for α-La was increased six times using fluorescence analysis. Circular dichroism (CD) indicated that the secondary structure of LA-1t contained a typical hairpin structure. Through the docking simulation of LA-1t and α-La, these experimental results were further explained theoretically, and the recognition mechanism was explained. Finally, the colorimetric and fluorescence signal of boron nitride quantum dots anchored to porous CeO2 nanorods (BNQDs/CeO2) were modulated by FAM-labeled LA-1t to achieve highly selective and sensitive determination of α-La. This dual-mode sensing strategy displayed sensitive recognition for α-La in a linear range of 5–4,000 ng/ml with the LOD was 3.32 ng/ml (colorimetry) and 0.71 ng/ml (fluorescence), respectively. Simultaneously, the colorimetry/fluorescence dual-mode sensing strategy was applied for detecting α-La in spiked real samples and demonstrated good stability and reliability.
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8
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Zhang X, Li G, Liu J, Su Z. Bio-inspired Nanoenzyme Synthesis and Its Application in A Portable Immunoassay for Food Allergy Proteins. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2021; 69:14751-14760. [PMID: 34523915 DOI: 10.1021/acs.jafc.1c04309] [Citation(s) in RCA: 23] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Nanozymes as a cost-effective and robust enzyme mimic have attracted widespread attention in the development of novel analytical methods. Herein, a new nanozyme-enhanced surface-enhanced Raman scattering (SERS) immunoassay platform was successfully developed using a peroxidase-mimicking nanozyme to replace the natural enzymes as a catalytic label of the enzyme-linked immunosorbent assay for the detection of allergy proteins. In this platform, the peroxidase-mimicking nanozymes as a catalytic label could catalyze the oxidation of the Raman-inactive reporter [i.e., leucomalachite green (LMG)] to generate Raman-active malachite green (MG) with H2O2. Moreover, the produced MG Raman signal was further enhanced by the formed Raman "hot spot" through MG-induced gold nanoparticle aggregation, which could be recorded by a portable Raman spectrometer. On this basis, the established nanozyme-enhanced SERS immunoassay showed improved accuracy, high sensitivity, and good selectivity and was used for accurate quantification of α-lactalbumin (α-LA). With this method, α-LA could be detected with a limit of detection as low as 0.01 ng/mL. Moreover, the method was also verified by performing in food samples and showed satisfactory recoveries and high reliability. This study not only provides insight into the use of a nanozyme to establish new analytical methods but also broadens the applications of nanozymes in a food safety assay.
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Affiliation(s)
- Xianlong Zhang
- School of Food and Biological Engineering, Shaanxi University of Science and Technology, Xi'an, Shaanxi 710021, People's Republic of China
| | - Guoliang Li
- School of Food and Biological Engineering, Shaanxi University of Science and Technology, Xi'an, Shaanxi 710021, People's Republic of China
| | - Jianghua Liu
- School of Food and Biological Engineering, Shaanxi University of Science and Technology, Xi'an, Shaanxi 710021, People's Republic of China
| | - Zhuoqun Su
- School of Food and Biological Engineering, Shaanxi University of Science and Technology, Xi'an, Shaanxi 710021, People's Republic of China
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9
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Aptamer-Based Fluorescent Biosensor for the Rapid and Sensitive Detection of Allergens in Food Matrices. Foods 2021; 10:foods10112598. [PMID: 34828878 PMCID: PMC8623274 DOI: 10.3390/foods10112598] [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: 09/30/2021] [Revised: 10/20/2021] [Accepted: 10/22/2021] [Indexed: 02/07/2023] Open
Abstract
Food allergies have seriously affected the life quality of some people and even endangered their lives. At present, there is still no effective cure for food allergies. Avoiding the intake of allergenic food is still the most effective way to prevent allergic diseases. Therefore, it is necessary to develop rapid, accurate, sensitive, and reliable analysis methods to detect food allergens from different sources. Aptamers are oligonucleotide sequences that can bind to a variety of targets with high specificity and selectivity, and they are often combined with different transduction technologies, thereby constructing various types of aptamer sensors. In recent years, with the development of technology and the application of new materials, the sensitivity, portability, and cost of fluorescence sensing technology have been greatly improved. Therefore, aptamer-based fluorescence sensing technology has been widely developed and applied in the specific recognition of food allergens. In this paper, the classification of major allergens and their characteristics in animal and plant foods were comprehensively reviewed, and the preparation principles and practical applications of aptamer-based fluorescence biosensors are summarized. In addition, we hope that this article can provide some strategies for the rapid and sensitive detection of allergens in food matrices.
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10
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Khan MU, Lin H, Ahmed I, Chen Y, Zhao J, Hang T, Dasanayaka BP, Li Z. Whey allergens: Influence of nonthermal processing treatments and their detection methods. Compr Rev Food Sci Food Saf 2021; 20:4480-4510. [PMID: 34288394 DOI: 10.1111/1541-4337.12793] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2021] [Revised: 06/02/2021] [Accepted: 06/06/2021] [Indexed: 12/16/2022]
Abstract
Whey and its components are recognized as value-added ingredients in infant formulas, beverages, sports nutritious foods, and other food products. Whey offers opportunities for the food industrial sector to develop functional foods with potential health benefits due to its unique physiological and functional attributes. Despite all the above importance, the consumption of whey protein (WP) can trigger hypersensitive reactions and is a constant threat for sensitive individuals. Although avoiding such food products is the most successful approach, there is still a chance of incorrect labeling and cross-contamination during food processing. As whey allergens in food products are cross-reactive, the phenomenon of homologous milk proteins of various species may escalate to a more serious problem. In this review, nonthermal processing technologies used to prevent and eliminate WP allergies are presented and discussed in detail. These processing technologies can either enhance or mitigate the impact of potential allergenicity. Therefore, the development of highly precise analytical technologies to detect and quantify the existence of whey allergens is of considerable importance. The present review is an attempt to cover all the updated approaches used for the detection of whey allergens in processed food products. Immunological and DNA-based assays are generally used for detecting allergenic proteins in processed food products. In addition, mass spectrometry is also employed as a preliminary technique for detection. We also highlighted the latest improvements in allergen detection toward biosensing strategies particularly immunosensors and aptasensors.
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Affiliation(s)
- Mati Ullah Khan
- College of Food Science and Engineering, Ocean University of China, 5# Yushan Road, Qingdao, 266003, China
| | - Hong Lin
- College of Food Science and Engineering, Ocean University of China, 5# Yushan Road, Qingdao, 266003, China
| | - Ishfaq Ahmed
- College of Food Science and Engineering, Ocean University of China, 5# Yushan Road, Qingdao, 266003, China
| | - Yan Chen
- NHC Key Laboratory of Food Safety Risk Assessment, Chinese Academy of Medical Science Research Unit (No. 2019RU014), China National Center for Food Safety Risk Assessment, No. 7 Panjiayuan Nanli, Beijing, Chaoyang, 100021, China
| | - Jinlong Zhao
- College of Food Science and Engineering, Ocean University of China, 5# Yushan Road, Qingdao, 266003, China
| | - Tian Hang
- College of Food Science and Engineering, Ocean University of China, 5# Yushan Road, Qingdao, 266003, China
| | | | - Zhenxing Li
- College of Food Science and Engineering, Ocean University of China, 5# Yushan Road, Qingdao, 266003, China
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11
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Camarca A, Varriale A, Capo A, Pennacchio A, Calabrese A, Giannattasio C, Murillo Almuzara C, D’Auria S, Staiano M. Emergent Biosensing Technologies Based on Fluorescence Spectroscopy and Surface Plasmon Resonance. SENSORS (BASEL, SWITZERLAND) 2021; 21:906. [PMID: 33572812 PMCID: PMC7866296 DOI: 10.3390/s21030906] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/24/2020] [Revised: 01/22/2021] [Accepted: 01/25/2021] [Indexed: 12/23/2022]
Abstract
The purpose of this work is to provide an exhaustive overview of the emerging biosensor technologies for the detection of analytes of interest for food, environment, security, and health. Over the years, biosensors have acquired increasing importance in a wide range of applications due to synergistic studies of various scientific disciplines, determining their great commercial potential and revealing how nanotechnology and biotechnology can be strictly connected. In the present scenario, biosensors have increased their detection limit and sensitivity unthinkable until a few years ago. The most widely used biosensors are optical-based devices such as surface plasmon resonance (SPR)-based biosensors and fluorescence-based biosensors. Here, we will review them by highlighting how the progress in their design and development could impact our daily life.
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Affiliation(s)
- Alessandra Camarca
- Institute of Food Science, CNR Italy, 83100 Avellino, Italy; (A.C.); (A.V.); (A.C.); (A.P.); (A.C.); (C.G.); (C.M.A.); (M.S.)
| | - Antonio Varriale
- Institute of Food Science, CNR Italy, 83100 Avellino, Italy; (A.C.); (A.V.); (A.C.); (A.P.); (A.C.); (C.G.); (C.M.A.); (M.S.)
- URT-ISA at Department of Biology, University of Naples Federico II, 80126 Napoli, Italy
| | - Alessandro Capo
- Institute of Food Science, CNR Italy, 83100 Avellino, Italy; (A.C.); (A.V.); (A.C.); (A.P.); (A.C.); (C.G.); (C.M.A.); (M.S.)
| | - Angela Pennacchio
- Institute of Food Science, CNR Italy, 83100 Avellino, Italy; (A.C.); (A.V.); (A.C.); (A.P.); (A.C.); (C.G.); (C.M.A.); (M.S.)
| | - Alessia Calabrese
- Institute of Food Science, CNR Italy, 83100 Avellino, Italy; (A.C.); (A.V.); (A.C.); (A.P.); (A.C.); (C.G.); (C.M.A.); (M.S.)
| | - Cristina Giannattasio
- Institute of Food Science, CNR Italy, 83100 Avellino, Italy; (A.C.); (A.V.); (A.C.); (A.P.); (A.C.); (C.G.); (C.M.A.); (M.S.)
| | - Carlos Murillo Almuzara
- Institute of Food Science, CNR Italy, 83100 Avellino, Italy; (A.C.); (A.V.); (A.C.); (A.P.); (A.C.); (C.G.); (C.M.A.); (M.S.)
| | - Sabato D’Auria
- Institute of Food Science, CNR Italy, 83100 Avellino, Italy; (A.C.); (A.V.); (A.C.); (A.P.); (A.C.); (C.G.); (C.M.A.); (M.S.)
| | - Maria Staiano
- Institute of Food Science, CNR Italy, 83100 Avellino, Italy; (A.C.); (A.V.); (A.C.); (A.P.); (A.C.); (C.G.); (C.M.A.); (M.S.)
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12
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Fu L, Qian Y, Zhou J, Zheng L, Wang Y. Fluorescence-based quantitative platform for ultrasensitive food allergen detection: From immunoassays to DNA sensors. Compr Rev Food Sci Food Saf 2020; 19:3343-3364. [PMID: 33337031 DOI: 10.1111/1541-4337.12641] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2020] [Revised: 08/12/2020] [Accepted: 09/01/2020] [Indexed: 01/10/2023]
Abstract
Food allergies are global health issue with an increasing prevalence that affect food safety; hence, food allergen detection, labeling, and management are considered to be important priorities in the food industry. In this critical review, we provide a comprehensive overview of several fluorescence-based platforms based on different biorecognition ligands, such as antibodies, DNA, aptamers, and cells, for food allergen quantification. Traditional analytical methods are generally unsuitable for food manufacturers to accomplish the real-time identification of food allergens in food products. Therefore, it is important to develop simple, rapid, inexpensive, accurate, and sensitive methods to improve user accessibility. A fluorescence-based quantitative platform provides an excellent detection platform for food allergens because of its high sensitivity. This review summarizes the traditional antibody-based fluorescent techniques for food allergen detection, such as the time-resolved fluoroimmunoassay , immunofluorescence imaging, fluorescence enzyme-linked immune sorbent assay, flow injection fluoroimmunoassay, and fluorescence immunosensors. However, these methods suffer from disadvantages such as the significant rate of false-positive and false-negative results due to antibody cross-reactivity with nontarget food components in the complex food matrix and epitope degradation during food processing. Hence, different types of fluorescence-based immunoassays are suitable for standardization and quantification of allergens in fresh foods. In addition, we summarize new fluorescence-based quantitative platforms, including fluorescence genosensors, fluorescence cell sensors, and fluorescence aptamer sensors. With the advantages of high sensitivity and simple operation, fluorescence biosensors will have great potential in the future and could provide portable methods for multiallergen real-time detection in complex food systems.
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Affiliation(s)
- Linglin Fu
- Food Safety Key Laboratory of Zhejiang Province, School of Food Science and Biotechnology, Zhejiang Gongshang University, Hangzhou, People's Republic of China
| | - Yifan Qian
- Food Safety Key Laboratory of Zhejiang Province, School of Food Science and Biotechnology, Zhejiang Gongshang University, Hangzhou, People's Republic of China
| | - Jinru Zhou
- Food Safety Key Laboratory of Zhejiang Province, School of Food Science and Biotechnology, Zhejiang Gongshang University, Hangzhou, People's Republic of China
| | - Lei Zheng
- School of Food Science and Engineering, Hefei University of Technology, Hefei, People's Republic of China
| | - Yanbo Wang
- Food Safety Key Laboratory of Zhejiang Province, School of Food Science and Biotechnology, Zhejiang Gongshang University, Hangzhou, People's Republic of China
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13
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Milk Allergen Detection: Sensitive Label-Free Voltammetric Immunosensor Based on Electropolymerization. BIONANOSCIENCE 2020. [DOI: 10.1007/s12668-020-00730-4] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
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14
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Kalčáková L, Tremlová B, Pospiech M, Hostovský M, Dordević D, Javůrková Z, Běhalová H, Bartlová M. Use of IHF-QD Microscopic Analysis for the Detection of Food Allergenic Components: Peanuts and Wheat Protein. Foods 2020; 9:foods9020239. [PMID: 32102221 PMCID: PMC7074483 DOI: 10.3390/foods9020239] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2020] [Revised: 02/19/2020] [Accepted: 02/20/2020] [Indexed: 12/19/2022] Open
Abstract
The aim of the study was to analytically evaluate quantum dots in immunohistofluorescence (IHF-QD) microscopic imaging as detectors of food allergens—peanut and wheat. The experiment was designed as two in silico experiments or simulations: (a) models of pastry samples were prepared with the addition of allergenic components (peanut and wheat protein components) and without the addition of allergenic components, and (b) positive and negative commercial samples underwent food allergen detection. The samples from both simulations were tested by the ELISA and IHF-QD microscopic methods. The primary antibodies (secondary antibodies to a rabbit Fc fragment with labeled CdSe/ZnS QD) were labelled at 525, 585, and 655 nm emissions. The use of quantum dots (QDs) has expanded to many science areas and they are also finding use in food allergen detection, as shown in the study. The study indicated that differences between the ELISA and IHF-QD microscopic methods were not observable among experimentally produced pastry samples with and without allergenic components, although differences were observed among commercial samples. The important value of the study is certainly the differences found in the application of different QD conjugates (525, 585, and 655). The highest contrast was found in the application of 585 QD conjugates that can serve for the possible quantification of present food allergens—peanuts and wheat. The study clearly emphasized that QD can be used for the qualitative detection of food allergens and can represent a reliable analytical method for food allergen detection in different food matrixes.
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Affiliation(s)
- Ludmila Kalčáková
- Department of Plant Origin Foodstuffs Hygiene and Technology, Faculty of Veterinary Hygiene and Ecology, University of Veterinary and Pharmaceutical Sciences Brno, Palackého 1946/1, 612 42 Brno, Czech Republic; (L.K.); (M.P.); (D.D.); (Z.J.); (H.B.); (M.B.)
| | - Bohuslava Tremlová
- Department of Plant Origin Foodstuffs Hygiene and Technology, Faculty of Veterinary Hygiene and Ecology, University of Veterinary and Pharmaceutical Sciences Brno, Palackého 1946/1, 612 42 Brno, Czech Republic; (L.K.); (M.P.); (D.D.); (Z.J.); (H.B.); (M.B.)
- Correspondence:
| | - Matej Pospiech
- Department of Plant Origin Foodstuffs Hygiene and Technology, Faculty of Veterinary Hygiene and Ecology, University of Veterinary and Pharmaceutical Sciences Brno, Palackého 1946/1, 612 42 Brno, Czech Republic; (L.K.); (M.P.); (D.D.); (Z.J.); (H.B.); (M.B.)
| | - Martin Hostovský
- Department of Biology and Wildlife Diseases, Faculty of Veterinary Hygiene and Ecology, University of Veterinary and Pharmaceutical Sciences Brno, Palackého 1946/1, 612 42 Brno, Czech Republic;
| | - Dani Dordević
- Department of Plant Origin Foodstuffs Hygiene and Technology, Faculty of Veterinary Hygiene and Ecology, University of Veterinary and Pharmaceutical Sciences Brno, Palackého 1946/1, 612 42 Brno, Czech Republic; (L.K.); (M.P.); (D.D.); (Z.J.); (H.B.); (M.B.)
- Department of Technology and Organization of Public Catering, South Ural State University, Lenin Prospect 76, 454080 Chelyabinsk, Russia
| | - Zdeňka Javůrková
- Department of Plant Origin Foodstuffs Hygiene and Technology, Faculty of Veterinary Hygiene and Ecology, University of Veterinary and Pharmaceutical Sciences Brno, Palackého 1946/1, 612 42 Brno, Czech Republic; (L.K.); (M.P.); (D.D.); (Z.J.); (H.B.); (M.B.)
| | - Hana Běhalová
- Department of Plant Origin Foodstuffs Hygiene and Technology, Faculty of Veterinary Hygiene and Ecology, University of Veterinary and Pharmaceutical Sciences Brno, Palackého 1946/1, 612 42 Brno, Czech Republic; (L.K.); (M.P.); (D.D.); (Z.J.); (H.B.); (M.B.)
| | - Marie Bartlová
- Department of Plant Origin Foodstuffs Hygiene and Technology, Faculty of Veterinary Hygiene and Ecology, University of Veterinary and Pharmaceutical Sciences Brno, Palackého 1946/1, 612 42 Brno, Czech Republic; (L.K.); (M.P.); (D.D.); (Z.J.); (H.B.); (M.B.)
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15
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Ruan Y, Xu H, Yu J, Chen Q, Gu L, Guo A. A fluorescence immunoassay based on CdTe : Zn/ZnS quantum dots for the rapid detection of bacteria, taking Delftia tsuruhatensis CM’13 as an example. RSC Adv 2020; 10:1042-1049. [PMID: 35494437 PMCID: PMC9049142 DOI: 10.1039/c9ra08651j] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2019] [Accepted: 11/09/2019] [Indexed: 11/21/2022] Open
Abstract
A fluorescence immunoassay has been widely applied in different fields due to its high sensitivity, simple operations, and high accuracy.
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Affiliation(s)
- Yao Ruan
- National Research and Development Center for Egg Processing
- Huazhong Agriculture University
- Wuhan 430070
- China
| | - Huanhuan Xu
- Key Laboratory of Environment Correlative Dietology (Huazhong Agricultural University)
- Ministry of Education
- Wuhan 430070
- China
| | - Jinlu Yu
- Key Laboratory of Environment Correlative Dietology (Huazhong Agricultural University)
- Ministry of Education
- Wuhan 430070
- China
| | - Qian Chen
- National Research and Development Center for Egg Processing
- Huazhong Agriculture University
- Wuhan 430070
- China
| | - Lihong Gu
- National Research and Development Center for Egg Processing
- Huazhong Agriculture University
- Wuhan 430070
- China
| | - Ailing Guo
- National Research and Development Center for Egg Processing
- Huazhong Agriculture University
- Wuhan 430070
- China
- Key Laboratory of Environment Correlative Dietology (Huazhong Agricultural University)
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16
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Nehra M, Lettieri M, Dilbaghi N, Kumar S, Marrazza G. Nano-Biosensing Platforms for Detection of Cow's Milk Allergens: An Overview. SENSORS (BASEL, SWITZERLAND) 2019; 20:E32. [PMID: 31861555 PMCID: PMC6982970 DOI: 10.3390/s20010032] [Citation(s) in RCA: 28] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/31/2019] [Revised: 12/07/2019] [Accepted: 12/16/2019] [Indexed: 12/16/2022]
Abstract
Among prevalent food allergies, cow milk allergy (CMA) is most common and may persist throughout the life. The allergic individuals are exposed to a constant threat due to milk proteins' presence in uncounted food products like yogurt, cheese, and bakery items. The problem can be more severe due to cross-reactivity of the milk allergens in the food products due to homologous milk proteins of diverse species. This problem can be overcome by proper and reliable food labeling in order to ensure the life quality of allergic persons. Therefore, highly sensitive and accurate analytical techniques should be developed to detect the food allergens. Here, significant research advances in biosensors (specifically immunosensors and aptasensors) are reviewed for detection of the milk allergens. Different allergic proteins of cow milk are described here along with the analytical standard methods for their detection. Additionally, the commercial status of biosensors is also discussed in comparison to conventional techniques like enzyme-linked immunosorbent assay (ELISA). The development of novel biosensing mechanisms/kits for milk allergens detection is imperative from the perspective of enforcement of labeling regulations and directives keeping in view the sensitive individuals.
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Affiliation(s)
- Monika Nehra
- Department of Bio and Nano Technology, Guru Jambheshwar University of Science and Technology, Hisar-Haryana 125001, India; (M.N.)
| | - Mariagrazia Lettieri
- Department of Chemistry “Ugo Schiff”, University of Florence, Via della Lastruccia, 350019 Sesto Fiorentino (Fi), Italy;
| | - Neeraj Dilbaghi
- Department of Bio and Nano Technology, Guru Jambheshwar University of Science and Technology, Hisar-Haryana 125001, India; (M.N.)
| | - Sandeep Kumar
- Department of Bio and Nano Technology, Guru Jambheshwar University of Science and Technology, Hisar-Haryana 125001, India; (M.N.)
| | - Giovanna Marrazza
- Department of Chemistry “Ugo Schiff”, University of Florence, Via della Lastruccia, 350019 Sesto Fiorentino (Fi), Italy;
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17
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Wang Y, Li Z, Lin H, Siddanakoppalu PN, Zhou J, Chen G, Yu Z. Quantum-dot-based lateral flow immunoassay for the rapid detection of crustacean major allergen tropomyosin. Food Control 2019. [DOI: 10.1016/j.foodcont.2019.106714] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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18
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Electrochemical determination of β-lactoglobulin in whey proteins. JOURNAL OF FOOD MEASUREMENT AND CHARACTERIZATION 2019. [DOI: 10.1007/s11694-019-00262-w] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
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19
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Mars A, Ben jaafar S, Gaied ABAE, Raouafi N. Electrochemical immunoassay for lactalbumin based on the use of ferrocene-modified gold nanoparticles and lysozyme-modified magnetic beads. Mikrochim Acta 2018; 185:449. [DOI: 10.1007/s00604-018-2986-0] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2018] [Accepted: 08/29/2018] [Indexed: 11/27/2022]
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20
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Gómez-Arribas LN, Benito-Peña E, Hurtado-Sánchez MDC, Moreno-Bondi MC. Biosensing Based on Nanoparticles for Food Allergens Detection. SENSORS 2018; 18:s18041087. [PMID: 29617319 PMCID: PMC5948517 DOI: 10.3390/s18041087] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/26/2018] [Revised: 03/16/2018] [Accepted: 04/02/2018] [Indexed: 12/13/2022]
Abstract
Food allergy is one of the major health threats for sensitized individuals all over the world and, over the years, the food industry has made significant efforts and investments to offer safe foods for allergic consumers. The analysis of the concentration of food allergen residues in processing equipment, in raw materials or in the final product, provides analytical information that can be used for risk assessment as well as to ensure that food-allergic consumers get accurate and useful information to make their food choices and purchasing decisions. The development of biosensors based on nanomaterials for applications in food analysis is a challenging area of growing interest in the last years. Research in this field requires the combined efforts of experts in very different areas including food chemistry, biotechnology or materials science. However, the outcome of such collaboration can be of significant impact on the food industry as well as for consumer’s safety. These nanobiosensing devices allow the rapid, selective, sensitive, cost-effective and, in some cases, in-field, online and real-time detection of a wide range of compounds, even in complex matrices. Moreover, they can also enable the design of novel allergen detection strategies. Herein we review the main advances in the use of nanoparticles for the development of biosensors and bioassays for allergen detection, in food samples, over the past few years. Research in this area is still in its infancy in comparison, for instance, to the application of nanobiosensors for clinical analysis. However, it will be of interest for the development of new technologies that reduce the gap between laboratory research and industrial applications.
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Affiliation(s)
- Lidia Nazaret Gómez-Arribas
- Departamento de Química Analítica, Facultad de Ciencias Químicas, Universidad Complutense de Madrid, 28040 Madrid, Spain.
| | - Elena Benito-Peña
- Departamento de Química Analítica, Facultad de Ciencias Químicas, Universidad Complutense de Madrid, 28040 Madrid, Spain.
| | | | - María Cruz Moreno-Bondi
- Departamento de Química Analítica, Facultad de Ciencias Químicas, Universidad Complutense de Madrid, 28040 Madrid, Spain.
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21
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Neethirajan S, Weng X, Tah A, Cordero J, Ragavan K. Nano-biosensor platforms for detecting food allergens – New trends. SENSING AND BIO-SENSING RESEARCH 2018. [DOI: 10.1016/j.sbsr.2018.02.005] [Citation(s) in RCA: 33] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/14/2022] Open
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22
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Li Z, Wen F, Li Z, Zheng N, Jiang J, Xu D. Simultaneous detection of α-Lactoalbumin, β-Lactoglobulin and Lactoferrin in milk by Visualized Microarray. BMC Biotechnol 2017; 17:72. [PMID: 28899371 PMCID: PMC5596914 DOI: 10.1186/s12896-017-0387-9] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2017] [Accepted: 08/01/2017] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND α-Lactalbumin (a-LA), β-lactoglobulin (β-LG) and lactoferrin (LF) are of high nutritional value which have made ingredients of choice in the formulation of modern foods and beverages. There remains an urgent need to develop novel biosensing methods for quantification featuring reduced cost, improved sensitivity, selectivity and more rapid response, especially for simultaneous detection of multiple whey proteins. RESULTS A novel visualized microarray method was developed for the determination of a-LA, β-LG and LF in milk samples without the need for complex or time-consuming pre-treatment steps. The measurement principle was based on the competitive immunological reaction and silver enhancement technique. In this case, a visible array dots as the detectable signals were further amplified and developed by the silver enhancement reagents. The microarray could be assayed by the microarray scanner. The detection limits (S/N = 3) were estimated to be 40 ng/mL (α-LA), 50 ng/mL (β-LG), 30 ng/mL (LF) (n = 6). CONCLUSIONS The method could be used to simultaneously analyze the whey protein contents of various raw milk samples and ultra-high temperature treated (UHT) milk samples including skimmed milk and high calcium milk. The analytical results were in good agreement with that of the high performance liquid chromatography. The presented visualized microarray has showed its advantages such as high-throughput, specificity, sensitivity and cost-effective for analysis of various milk samples.
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Affiliation(s)
- Zhoumin Li
- State Key Laboratory of Analytical Chemistry for Life Science, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing, 210093, China.,School of Chemistry and Biological Science, Nanjing University Jingling College, Nanjing, 210089, China
| | - Fang Wen
- Ministry of Agriculture-Key Laboratory of Quality & Safety Control for Milk and Dairy Products, Institute of Animal Science, Chinese Academy of Agricultural Sciences, Beijing, 100193, People's Republic of China
| | - Zhonghui Li
- State Key Laboratory of Analytical Chemistry for Life Science, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing, 210093, China
| | - Nan Zheng
- Ministry of Agriculture-Key Laboratory of Quality & Safety Control for Milk and Dairy Products, Institute of Animal Science, Chinese Academy of Agricultural Sciences, Beijing, 100193, People's Republic of China.
| | - Jindou Jiang
- Ministry of Agriculture Dairy Quality Supervision and Testing Center, Harbin, 150090, China
| | - Danke Xu
- State Key Laboratory of Analytical Chemistry for Life Science, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing, 210093, China.
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23
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A printed SWCNT electrode modified with polycatechol and lysozyme for capacitive detection of α-lactalbumin. Mikrochim Acta 2017. [DOI: 10.1007/s00604-017-2481-z] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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24
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A Novel Fluoroimmunoassay for Detecting Ruscogenin with Monoclonal Antibodies Conjugated with CdSe/ZnS Quantum Dots. Molecules 2017; 22:molecules22081250. [PMID: 28933731 PMCID: PMC6152124 DOI: 10.3390/molecules22081250] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2017] [Revised: 07/20/2017] [Accepted: 07/23/2017] [Indexed: 11/18/2022] Open
Abstract
Ruscogenin (RUS) is a steroidal sapogenin found in Ruscus aculeatus and Ophiopogon japonicus with several pharmacological activities. In the work reported herein, a novel method termed competitive fluorescence-linked immunosorbent assay (cFLISA) based on monoclonal antibodies (mAbs) coupled with quantum dots (QDs) was developed for the quick and sensitive determination of RUS in biological samples. The mAbs against RUS were conjugated with CdSe/ZnS QDs by the crossing-linking reagents and an indirect cFLISA method was developed. There was a good linear relationship between inhibition efficiency and logarithm concentration of RUS which was varied from 0.1 to 1000 ng/mL. The IC50 and limit of detection (LOD) were 9.59 ng/mL and 0.016 ng/mL respectively, which much lower than the enzyme-linked immunosorbent assay (ELISA) method. The recoveries in plasma and tissues were ranged from 82.3% to 107.0% and the intra- and inter-day precision values were below 15%. The developed cFLISA has been successfully applied to the measurement of the concentrations of RUS in biological samples of rats, and showed great potential for the tissue distribution study of RUS. The cFLISA method may provide a valuable tool for the analysis of small molecules in biological samples and such an approach could be applied to other natural products.
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25
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Zimmer J, Vieths S, Kaul S. Standardization and Regulation of Allergen Products in the European Union. Curr Allergy Asthma Rep 2016; 16:21. [PMID: 26874849 DOI: 10.1007/s11882-016-0599-4] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Product-specific standardization is of prime importance to ensure persistent quality, safety, and efficacy of allergen products. The regulatory framework in the EU has induced great advancements in the field in the last years although national implementation still remains heterogeneous. Scores of methods for quantification of individual allergen molecules are developed each year and also the challenging characterization of chemically modified allergen products is progressing. However, despite the unquestionable increase in knowledge and the subsequent improvements in control of quality parameters of allergen products, an important aim has not been reached yet, namely cross-product comparability. Still, comparison of allergen product potency, either based on total allergenic activity or individual allergen molecule content, is not possible due to a lack of standard reference preparations in conjunction with validated standard methods. This review aims at presenting the most recent developments in product-specific standardization as well as activities to facilitate cross-product comparability in the EU.
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Affiliation(s)
- Julia Zimmer
- Division of Allergology, Paul-Ehrlich-Institut, Paul-Ehrlich-Str. 51-59, 63225, Langen, Germany.
| | - Stefan Vieths
- Division of Allergology, Paul-Ehrlich-Institut, Paul-Ehrlich-Str. 51-59, 63225, Langen, Germany.
| | - Susanne Kaul
- Division of Allergology, Paul-Ehrlich-Institut, Paul-Ehrlich-Str. 51-59, 63225, Langen, Germany.
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26
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Liang Y, Huang X, Yu R, Zhou Y, Xiong Y. Fluorescence ELISA for sensitive detection of ochratoxin A based on glucose oxidase-mediated fluorescence quenching of CdTe QDs. Anal Chim Acta 2016; 936:195-201. [PMID: 27566355 DOI: 10.1016/j.aca.2016.06.018] [Citation(s) in RCA: 45] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2016] [Revised: 06/11/2016] [Accepted: 06/13/2016] [Indexed: 10/21/2022]
Abstract
The present study described a novel fluorescence enzyme-linked immunosorbent assay (ELISA) used to detect ochratoxin A (OTA) by using the glucose oxidase (GOx)-mediated fluorescence quenching of mercaptopropionic acid-capped CdTe quantum dots (MPA-QDs), in which GOx was used as an alternative to horseradish peroxidase (HRP) for the oxidization of glucose into hydrogen peroxide (H2O2) and gluconic acid. The MPA-QDs were used as a fluorescent signal output, whose fluorescence variation was extremely sensitive to the presence of H2O2 or hydrogen ions in the solution. Under the optimized conditions, the proposed fluorescence ELISA demonstrated a good linear detection of OTA in corn extract from 2.4 pg mL(-1) to 625 pg mL(-1) with a limit of detection of 2.2 pg mL(-1), which was approximately 15-fold lower than that of conventional HRP-based ELISA. Our developed fluorescence immunoassay was also similar to HRP-based ELISA in terms of selectivity, accuracy, and reproducibility. In summary, this study was the first to use the GOx-mediated fluorescence quenching of QDs in immunoassay to detect OTA, offering a new possibility for the analysis of other mycotoxins and biomolecules.
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Affiliation(s)
- Yi Liang
- State Key Laboratory of Food Science and Technology, Nanchang University, Nanchang, 330047, PR China; Jiangxi-OAI Joint Research Institute, Nanchang University, Nanchang 330047, PR China
| | - Xiaolin Huang
- State Key Laboratory of Food Science and Technology, Nanchang University, Nanchang, 330047, PR China
| | - Ruijin Yu
- College of Science, Northwest A&F University, Yangling, Shaanxi 712100, PR China
| | - Yaofeng Zhou
- State Key Laboratory of Food Science and Technology, Nanchang University, Nanchang, 330047, PR China
| | - Yonghua Xiong
- State Key Laboratory of Food Science and Technology, Nanchang University, Nanchang, 330047, PR China; Jiangxi-OAI Joint Research Institute, Nanchang University, Nanchang 330047, PR China.
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27
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Boken J, Soni SK, Kumar D. Microfluidic Synthesis of Nanoparticles and their Biosensing Applications. Crit Rev Anal Chem 2016; 46:538-61. [DOI: 10.1080/10408347.2016.1169912] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
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28
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Zhang H, Peng S, Xu S, Chen Z. Bifunctional nanocapsules for magnetic resonance imaging and photodynamic therapy. RSC Adv 2016. [DOI: 10.1039/c6ra22831c] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
A bifunctional protein nanospheres was successfully constructed through self-assembly of hydrolysed α-lactalbumin for magnetic resonance imaging and photodynamic therapy.
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Affiliation(s)
- Hecheng Zhang
- School of Medicine
- Tsinghua University
- Beijing 100084
- P. R. China
- Department of Radiology
| | - Shan Peng
- Beijing University of Chemical Technology
- Beijing 100029
- P. R. China
| | - Suying Xu
- Beijing University of Chemical Technology
- Beijing 100029
- P. R. China
| | - Zhengguang Chen
- Department of Radiology
- Dongzhimen Hospital Affiliated to Beijing University of Chinese Medicine
- Beijing 100700
- P. R. China
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29
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Ultrasensitive immunoassays based on biotin–streptavidin amplified system for quantitative determination of family zearalenones. Food Control 2015. [DOI: 10.1016/j.foodcont.2015.03.049] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
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30
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Abdelhamid HN, Wu HF. Synthesis of a highly dispersive sinapinic acid@graphene oxide (SA@GO) and its applications as a novel surface assisted laser desorption/ionization mass spectrometry for proteomics and pathogenic bacteria biosensing. Analyst 2015; 140:1555-65. [DOI: 10.1039/c4an02158d] [Citation(s) in RCA: 39] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
GO-modified sinapinic acid was synthesized and characterized; it was then investigated for use in SALDI-MS for proteomics and pathogenic bacterial biosensing.
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Affiliation(s)
- Hani Nasser Abdelhamid
- Department of Chemistry
- National Sun Yat-Sen University
- Kaohsiung
- Taiwan
- Department of Chemistry
| | - Hui-Fen Wu
- Department of Chemistry
- National Sun Yat-Sen University
- Kaohsiung
- Taiwan
- School of Pharmacy
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31
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Cadmium telluride quantum dots (CdTe-QDs) and enhanced ultraviolet-B (UV-B) radiation trigger antioxidant enzyme metabolism and programmed cell death in wheat seedlings. PLoS One 2014; 9:e110400. [PMID: 25329900 PMCID: PMC4203795 DOI: 10.1371/journal.pone.0110400] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2014] [Accepted: 09/21/2014] [Indexed: 11/25/2022] Open
Abstract
Nanoparticles (NPs) are becoming increasingly widespread in the environment. Free cadmium ions released from commonly used NPs under ultraviolet-B (UV-B) radiation are potentially toxic to living organisms. With increasing levels of UV-B radiation at the Earth’s surface due to the depletion of the ozone layer, the potential additive effect of NPs and UV-B radiation on plants is of concern. In this study, we investigated the synergistic effect of CdTe quantum dots (CdTe-QDs), a common form of NP, and UV-B radiation on wheat seedlings. Graded doses of CdTe-QDs and UV-B radiation were tested, either alone or in combination, based on physical characteristics of 5-day-old seedlings. Treatments of wheat seedlings with either CdTe-QDs (200 mg/L) or UV-B radiation (10 KJ/m2/d) induced the activation of wheat antioxidant enzymes. CdTe-QDs accumulation in plant root cells resulted in programmed cell death as detected by DNA laddering. CdTe-QDs and UV-B radiation inhibited root and shoot growth, respectively. Additive inhibitory effects were observed in the combined treatment group. This research described the effects of UV-B and CdTe-QDs on plant growth. Furthermore, the finding that CdTe-QDs accumulate during the life cycle of plants highlights the need for sustained assessments of these interactions.
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