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Lin JF, Chang KL, Hsieh BS, Hu YC, Huang ES, Yu HS. Development of validated sandwich ELISA for detecting peanut allergen Ara h 3 in food. Food Chem 2024; 445:138757. [PMID: 38367563 DOI: 10.1016/j.foodchem.2024.138757] [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: 10/26/2023] [Revised: 02/01/2024] [Accepted: 02/13/2024] [Indexed: 02/19/2024]
Abstract
Peanut is an important food that can cause food allergies, often leading to moderate and severe allergic symptoms such as skin rashes, asthma, and even anaphylactic shock.Research indicates that Ara h 3 is one of the major peanut allergen. In order to establish a simple analytical method for detecting Ara h 3, we developed a sandwich enzyme-linked immunosorbent assay (ELISA) with antibodies that were induced from purified Ara h 3. The experimental results showed that the purified Ara h 3 had good purity, and we successfully prepared capture and detection antibodies. The method established in this study exhibited high specificity and did not cross-react with soybeans, cashew nuts, and sesame. For validation, including precision, recovery and sensitivity were in good condition. We also detected the Ara h 3 in peanut related foods. Overall, the ELISA developed in this study is a reliable method for Ara h 3 detection.
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Affiliation(s)
- Jia-Fong Lin
- Department of Food Science, National Pingtung University of Science and Technology, Pingtung 912, Taiwan.
| | - Kee-Lung Chang
- Graduate Institute of Medicine, College of Medicine, Kaohsiung Medical University, Kaohsiung 807, Taiwan; Department of Biochemistry, College of Medicine, Kaohsiung Medical University, Kaohsiung 807, Taiwan.
| | - Bau-Shan Hsieh
- Graduate Institute of Medicine, College of Medicine, Kaohsiung Medical University, Kaohsiung 807, Taiwan.
| | - Yu-Chen Hu
- Department of Biochemistry, College of Medicine, Kaohsiung Medical University, Kaohsiung 807, Taiwan.
| | - Edward S Huang
- Department of Gastroenterology, Palo Alto Medical Foundation, Mountain View, CA 94040, USA.
| | - Hsu-Sheng Yu
- Department of Food Science, National Pingtung University of Science and Technology, Pingtung 912, Taiwan.
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2
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Yao C, Hu Y, Liu Q, Liu JM, Ji X, Lv H, Wang S. Nanobody mediated dual-mode immunoassay for detection of peanut allergen Ara h 3. Food Chem 2024; 436:137679. [PMID: 37826894 DOI: 10.1016/j.foodchem.2023.137679] [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: 05/31/2023] [Revised: 09/26/2023] [Accepted: 10/04/2023] [Indexed: 10/14/2023]
Abstract
To improve the performance of peanut allergen Ara h 3 detection, depending on boron and nitrogen carbon dots (B/N-CDs), a nanobody (Nb) mediated dual-mode immunoassay was established, which combines the dominance of colorimetry with ratiometric fluorescence techniques. With the catalysis of Horseradish peroxidase (HRP), the oxidization of o-phenylenediamine (o-PD) in the presence of H2O2, leading to the production of yellow 2,3-diaminophenolazine (DAP) with an absorption peak at 431 nm. Owing to inner filter effect (IFE), DAP quenched the fluorescence of B/N-CDs at 426 nm, and it emerged a new emission peak at 549 nm. The fluorescence intensity ratio and absorption intensity can be utilized for quantitative analysis of Ara h 3 concentration. Under optimal conditions, the detection limits were 6.61 and 9.79 ng·mL-1, respectively. The dual-mode immunoassay was assessed containing specificity, stability, reproducibility, and practicability. This method paved the way for sensitive detection of Ara h 3 without background Interference.
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Affiliation(s)
- Chixuan Yao
- Tianjin Key Laboratory of Food Science and Health, School of Medicine, Nankai University, Tianjin 300071, China
| | - Yaozhong Hu
- Tianjin Key Laboratory of Food Science and Health, School of Medicine, Nankai University, Tianjin 300071, China
| | - Qisijing Liu
- Tianjin Key Laboratory of Food Science and Health, School of Medicine, Nankai University, Tianjin 300071, China
| | - Jing-Min Liu
- Tianjin Key Laboratory of Food Science and Health, School of Medicine, Nankai University, Tianjin 300071, China
| | - Xuemeng Ji
- Tianjin Key Laboratory of Food Science and Health, School of Medicine, Nankai University, Tianjin 300071, China
| | - Huan Lv
- Tianjin Key Laboratory of Food Science and Health, School of Medicine, Nankai University, Tianjin 300071, China
| | - Shuo Wang
- Tianjin Key Laboratory of Food Science and Health, School of Medicine, Nankai University, Tianjin 300071, China.
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3
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Yan Y, Li L, Long C, Dong Y, Li J, Shen C, Zhao Y, Zhao J, Wang J, Xiong A, Li X, Chen H, He S. A novel IgE epitope-specific antibodies-based sandwich ELISA for sensitive measurement of immunoreactivity changes of peanut allergen Ara h 2 in processed foods. Front Nutr 2024; 11:1323553. [PMID: 38439921 PMCID: PMC10910080 DOI: 10.3389/fnut.2024.1323553] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2023] [Accepted: 02/05/2024] [Indexed: 03/06/2024] Open
Abstract
Background Peanut is an important source of dietary protein for human beings, but it is also recognized as one of the eight major food allergens. Binding of IgE antibodies to specific epitopes in peanut allergens plays important roles in initiating peanut-allergic reactions, and Ara h 2 is widely considered as the most potent peanut allergen and the best predictor of peanut allergy. Therefore, Ara h 2 IgE epitopes can serve as useful biomarkers for prediction of IgE-binding variations of Ara h 2 and peanut in foods. This study aimed to develop and validate an IgE epitope-specific antibodies (IgE-EsAbs)-based sandwich ELISA (sELISA) for detection of Ara h 2 and measurement of Ara h 2 IgE-immunoreactivity changes in foods. Methods DEAE-Sepharose Fast Flow anion-exchange chromatography combining with SDS-PAGE gel extraction were applied to purify Ara h 2 from raw peanut. Hybridoma and epitope vaccine techniques were employed to generate a monoclonal antibody against a major IgE epitope of Ara h 2 and a polyclonal antibody against 12 IgE epitopes of Ara h 2, respectively. ELISA was carried out to evaluate the target binding and specificity of the generated IgE-EsAbs. Subsequently, IgE-EsAbs-based sELISA was developed to detect Ara h 2 and its allergenic residues in food samples. The IgE-binding capacity of Ara h 2 and peanut in foods was determined by competitive ELISA. The dose-effect relationship between the Ara h 2 IgE epitope content and Ara h 2 (or peanut) IgE-binding ability was further established to validate the reliability of the developed sELISA in measuring IgE-binding variations of Ara h 2 and peanut in foods. Results The obtained Ara h 2 had a purity of 94.44%. Antibody characterization revealed that the IgE-EsAbs recognized the target IgE epitope(s) of Ara h 2 and exhibited high specificity. Accordingly, an IgE-EsAbs-based sELISA using these antibodies was able to detect Ara h 2 and its allergenic residues in food samples, with high sensitivity (a limit of detection of 0.98 ng/mL), accuracy (a mean bias of 0.88%), precision (relative standard deviation < 16.50%), specificity, and recovery (an average recovery of 98.28%). Moreover, the developed sELISA could predict IgE-binding variations of Ara h 2 and peanut in foods, as verified by using sera IgE derived from peanut-allergic individuals. Conclusion This novel immunoassay could be a user-friendly method to monitor low level of Ara h 2 and to preliminary predict in vitro potential allergenicity of Ara h 2 and peanut in processed foods.
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Affiliation(s)
- Yan Yan
- School of Public Health and Health Management, Gannan Medical University, Ganzhou, China
| | - Liming Li
- Department of Dermatology, First Affiliated Hospital of Gannan Medical University, Ganzhou, China
| | - Caiyun Long
- Department of Laboratory, Ganzhou Center for Disease Control and Prevention, Ganzhou, China
| | - Yaping Dong
- School of Public Health and Health Management, Gannan Medical University, Ganzhou, China
| | - Jinyu Li
- Department of Dermatology, First Affiliated Hospital of Gannan Medical University, Ganzhou, China
| | - Caiyi Shen
- School of Public Health and Health Management, Gannan Medical University, Ganzhou, China
| | - Yiqian Zhao
- School of Public Health and Health Management, Gannan Medical University, Ganzhou, China
| | - Jiangqiang Zhao
- School of Public Health and Health Management, Gannan Medical University, Ganzhou, China
| | - Jianbin Wang
- School of Public Health and Health Management, Gannan Medical University, Ganzhou, China
| | - Anqi Xiong
- School of Public Health and Health Management, Gannan Medical University, Ganzhou, China
| | - Xin Li
- State Key Laboratory of Food Science and Resources, Nanchang University, Nanchang, China
| | - Hongbing Chen
- State Key Laboratory of Food Science and Resources, Nanchang University, Nanchang, China
| | - Shengfa He
- School of Public Health and Health Management, Gannan Medical University, Ganzhou, China
- Key Laboratory of Environment and Health of Ganzhou, Gannan Medical University, Ganzhou, China
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4
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Xiao C, Ross G, Nielen MWF, Eriksson J, Salentijn GI, Mak WC. A portable smartphone-based imaging surface plasmon resonance biosensor for allergen detection in plant-based milks. Talanta 2023; 257:124366. [PMID: 36863294 DOI: 10.1016/j.talanta.2023.124366] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2022] [Revised: 11/23/2022] [Accepted: 02/13/2023] [Indexed: 02/22/2023]
Abstract
Food allergies are hypersensitivity immune responses triggered by (traces of) allergenic compounds in foods and drinks. The recent trend towards plant-based and lactose-free diets has driven an increased consumption of plant-based milks (PBMs) with the risk of cross-contamination of various allergenic plant-based proteins during the food manufacturing process. Conventional allergen screening is usually performed in the laboratory, but portable biosensors for on-site screening of food allergens at the production site could improve quality control and food safety. Here, we developed a portable smartphone imaging surface plasmon resonance (iSPR) biosensor composed of a 3D-printed microfluidic SPR chip for the detection of total hazelnut protein (THP) in commercial PBMs and compared its instrumentation and analytical performance with a conventional benchtop SPR. The smartphone iSPR shows similar characteristic sensorgrams compared with the benchtop SPR and enables the detection of trace levels of THP in spiked PBMs with the lowest tested concentration of 0.625 μg/mL THP. The smartphone iSPR achieved LoDs of 0.53, 0.16, 0.14, 0.06, and 0.04 μg/mL THP in 10x-diluted soy, oat, rice, coconut, and almond PBMs, respectively, with good correlation with the conventional benchtop SPR system (R2 0.950-0.991). The portability and miniaturized characteristics of the smartphone iSPR biosensor platform make it promising for the future on-site detection of food allergens by food producers.
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Affiliation(s)
- Chi Xiao
- Division of Sensor and Actuator Systems, IFM - Linköping University, S58183, Linköping, Sweden
| | - Georgina Ross
- Wageningen Food Safety Research (WFSR), Wageningen University & Research, P.O. Box 230, 6700, AE, Wageningen, the Netherlands; Laboratory of Organic Chemistry, Wageningen University, Helix Building 124, Stippeneng 4, 6708 WE, Wageningen, the Netherlands
| | - Michel W F Nielen
- Wageningen Food Safety Research (WFSR), Wageningen University & Research, P.O. Box 230, 6700, AE, Wageningen, the Netherlands; Laboratory of Organic Chemistry, Wageningen University, Helix Building 124, Stippeneng 4, 6708 WE, Wageningen, the Netherlands
| | - Jens Eriksson
- Division of Sensor and Actuator Systems, IFM - Linköping University, S58183, Linköping, Sweden
| | - Gert Ij Salentijn
- Wageningen Food Safety Research (WFSR), Wageningen University & Research, P.O. Box 230, 6700, AE, Wageningen, the Netherlands; Laboratory of Organic Chemistry, Wageningen University, Helix Building 124, Stippeneng 4, 6708 WE, Wageningen, the Netherlands.
| | - Wing Cheung Mak
- Division of Sensor and Actuator Systems, IFM - Linköping University, S58183, Linköping, Sweden; Department of Biomedical Engineering, The Chinese University of Hong Kong, Shatin, Hong Kong, China.
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Sensitive and selective detection of peanut allergen Ara h 1 by ELISA and lateral flow immunoassay. Food Chem 2022; 396:133657. [PMID: 35843000 DOI: 10.1016/j.foodchem.2022.133657] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2021] [Revised: 06/17/2022] [Accepted: 07/06/2022] [Indexed: 11/20/2022]
Abstract
The Ara h1 protein is a peanut allergen and it provides a useful biomarker for the detection of peanut protein. In this manuscript, we describe the generation of monoclonal antibodies (MAbs) against the Ara h1 protein and their development into sensitive and selective immunoassays for peanut detection. Our enzyme-linked immunosorbent assay (sELISA) detects a peanut meal standard with a sensitivity of 10 ng/mL and 500 ng/mL by lateral flow immunoassay (LFIA). MAb Ara h1 binding epitopes were identified, and immunoassay detection was limited to peanut meal varieties irrespective of thermal treatment. No binding was observed from tree nut meals (100-0.4 µg/mL). Peanut allergen detection during food manufacturing can limit the incidence of product recall resulting from cross-contact contamination or improper labeling of finished food products. Detection of Ara h1 by immunoassay can provide a cost-effective method for rapid surveillance of peanut during food production and prior to consumption.
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Kontopodi E, Hettinga K, Stahl B, van Goudoever JB, M van Elburg R. Testing the effects of processing on donor human Milk: Analytical methods. Food Chem 2022; 373:131413. [PMID: 34700038 DOI: 10.1016/j.foodchem.2021.131413] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2021] [Revised: 10/12/2021] [Accepted: 10/13/2021] [Indexed: 01/01/2023]
Abstract
Holder pasteurization is the current recommended method for donor human milk treatment. This method effectively eliminates most life-threatening contaminants in donor milk, but it also greatly reduces some of its biological properties. Consequently, there is a growing interest for developing novel processing methods that can ensure both microbial inactivation and a higher retention of the functional components of donor milk. Our aim was to offer a comprehensive overview of the analytical techniques available for the evaluation of such methods. To suggest an efficient workflow for the analysis of processed donor milk, a safety analytical panel as well as a nutritional value and functionality analytical panel are discussed, together with the principles, benefits, and drawbacks of the available techniques. Concluding on the suitability of a novel method requires a multifactorial approach which can be achieved by a combination of analytical targets and by using complementary assays to cross-validate the obtained results.
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Affiliation(s)
- Eva Kontopodi
- Amsterdam UMC, University of Amsterdam, Vrije Universiteit, Emma Children's Hospital, Human Milk Bank, Amsterdam, the Netherlands; Food Quality and Design Group, Wageningen University & Research, the Netherlands.
| | - Kasper Hettinga
- Food Quality and Design Group, Wageningen University & Research, the Netherlands
| | - Bernd Stahl
- Department of Chemical Biology & Drug Discovery, Utrecht Institute for Pharmaceutical Sciences, Utrecht University, Utrecht, the Netherlands; Danone Nutricia Research, Utrecht, the Netherlands
| | - Johannes B van Goudoever
- Amsterdam UMC, University of Amsterdam, Vrije Universiteit, Emma Children's Hospital, Human Milk Bank, Amsterdam, the Netherlands
| | - Ruurd M van Elburg
- Amsterdam UMC, University of Amsterdam, Vrije Universiteit, Emma Children's Hospital, Human Milk Bank, Amsterdam, the Netherlands
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7
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Detection of Peanut Traces in Food by an Official Food Safety Laboratory. Foods 2022; 11:foods11050643. [PMID: 35267276 PMCID: PMC8909111 DOI: 10.3390/foods11050643] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2022] [Revised: 02/16/2022] [Accepted: 02/19/2022] [Indexed: 02/04/2023] Open
Abstract
Food safety laboratories rely on validated methods that detect hidden allergens in food to ensure the safety and health of allergic consumers. Here we present test results for the validation and accreditation of a real-time PCR assay for the detection of peanut traces in food products. The method was tested on five classes of food matrices: bakery and pastry products, meats, ready-to-eat and dairy products, and grains and milling products. Blank samples were spiked starting with the peanut samples (Arachis hypogaea) at a concentration of 1000 ppm. Serial dilutions were then prepared with the DNA extracted from the blank samples to a final concentration of 0.5 ppm. The limit of detection in grains and milling products, ready-to-eat, meats, bakery and pastry products was 0.5 ppm (range, Ct 27–34) and 2.5 ppm in dairy products (range, Ct 25–34). In order to determine the exclusivity parameter of the method, the ragù matrix was contaminated with Prunus dulcis (almonds), Glycine max (soy), Sinapis alba (mustard), Apium graveolens (celery), Allium cepa (onion), Pisum sativum (peas), Daucus carota (carrots), and Theobroma cacao (cocoa); no cross-reactions were observed. The method was rated satisfactory for sensitivity (98%), specificity (100%), robustness, and repeatability and it was fully validated and accredited.
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Kim D, Jin B, Kim SA, Choi W, Shin S, Park J, Shim WB, Kim K, Lee JS. An Ultrasensitive Silicon-Based Electrolyte-Gated Transistor for the Detection of Peanut Allergens. BIOSENSORS 2022; 12:bios12010024. [PMID: 35049652 PMCID: PMC8773534 DOI: 10.3390/bios12010024] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/03/2021] [Revised: 12/31/2021] [Accepted: 12/31/2021] [Indexed: 11/28/2022]
Abstract
The highly sensitive detection of peanut allergens (PAs) using silicon-based electrolyte-gated transistors (Si-EGTs) was demonstrated. The Si-EGT was made using a top-down technique. The fabricated Si-EGT showed excellent intrinsic electrical characteristics, including a low threshold voltage of 0.7 V, low subthreshold swing of <70 mV/dec, and low gate leakage of <10 pA. Surface functionalization and immobilization of antibodies were performed for the selective detection of PAs. The voltage-related sensitivity (SV) showed a constant behavior from the subthreshold regime to the linear regime. The current-related sensitivity (SI) was high in the subthreshold regime and then significantly decreased as the drain current increased. The limit of detection (LOD) was calculated to be as low as 25 pg/mL based on SI characteristics, which is the lowest value reported to date in the literature for various sensor methodologies. The Si-EGT showed selective detection of PA through a non-specific control test. These results confirm that Si-EGT is a high-sensitivity and low-power biosensor for PA detection.
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Affiliation(s)
- Donghoon Kim
- Department of Electrical Engineering, Pohang University of Science and Technology (POSTECH), Pohang 37673, Korea; (D.K.); (B.J.); (W.C.); (S.S.); (J.P.)
| | - Bo Jin
- Department of Electrical Engineering, Pohang University of Science and Technology (POSTECH), Pohang 37673, Korea; (D.K.); (B.J.); (W.C.); (S.S.); (J.P.)
- Research and Development Department, Innovative General Electronic Sensor Technology Co., Itd. (IGEST), Pohang 37673, Korea
| | - Sol-A Kim
- Division of Applied Life Science, Graduate School, Gyeongsang National University, Jinju 52828, Korea;
| | - Wonyeong Choi
- Department of Electrical Engineering, Pohang University of Science and Technology (POSTECH), Pohang 37673, Korea; (D.K.); (B.J.); (W.C.); (S.S.); (J.P.)
| | - Seonghwan Shin
- Department of Electrical Engineering, Pohang University of Science and Technology (POSTECH), Pohang 37673, Korea; (D.K.); (B.J.); (W.C.); (S.S.); (J.P.)
| | - Jiwon Park
- Department of Electrical Engineering, Pohang University of Science and Technology (POSTECH), Pohang 37673, Korea; (D.K.); (B.J.); (W.C.); (S.S.); (J.P.)
| | - Won-Bo Shim
- Department of Food Science and Technology, Gyeongsang National University, Jinju 52828, Korea;
| | - Kihyun Kim
- Division of Electronics Engineering, Jeonbuk National University, Jeonju 54896, Korea
- Future Semiconductor Convergence Technology Research Center and ICT Convergence Research Center, Jeonbuk National University, Jeonju 54896, Korea
- Correspondence: (K.K.); (J.-S.L.)
| | - Jeong-Soo Lee
- Department of Electrical Engineering, Pohang University of Science and Technology (POSTECH), Pohang 37673, Korea; (D.K.); (B.J.); (W.C.); (S.S.); (J.P.)
- Correspondence: (K.K.); (J.-S.L.)
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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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Sinha P, Bajaj P, Pazhamala LT, Nayak SN, Pandey MK, Chitikineni A, Huai D, Khan AW, Desai A, Jiang H, Zhuang W, Guo B, Liao B, Varshney RK. Arachis hypogaea gene expression atlas for fastigiata subspecies of cultivated groundnut to accelerate functional and translational genomics applications. PLANT BIOTECHNOLOGY JOURNAL 2020; 18:2187-2200. [PMID: 32167667 PMCID: PMC7589347 DOI: 10.1111/pbi.13374] [Citation(s) in RCA: 25] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/04/2019] [Accepted: 02/26/2020] [Indexed: 05/05/2023]
Abstract
Spatio-temporal and developmental stage-specific transcriptome analysis plays a crucial role in systems biology-based improvement of any species. In this context, we report here the Arachis hypogaea gene expression atlas (AhGEA) for the world's widest cultivated subsp. fastigiata based on RNA-seq data using 20 diverse tissues across five key developmental stages. Approximately 480 million paired-end filtered reads were generated followed by identification of 81 901 transcripts from an early-maturing, high-yielding, drought-tolerant groundnut variety, ICGV 91114. Further, 57 344 genome-wide transcripts were identified with ≥1 FPKM across different tissues and stages. Our in-depth analysis of the global transcriptome sheds light into complex regulatory networks namely gravitropism and photomorphogenesis, seed development, allergens and oil biosynthesis in groundnut. Importantly, interesting insights into molecular basis of seed development and nodulation have immense potential for translational genomics research. We have also identified a set of stable expressing transcripts across the selected tissues, which could be utilized as internal controls in groundnut functional genomics studies. The AhGEA revealed potential transcripts associated with allergens, which upon appropriate validation could be deployed in the coming years to develop consumer-friendly groundnut varieties. Taken together, the AhGEA touches upon various important and key features of cultivated groundnut and provides a reference for further functional, comparative and translational genomics research for various economically important traits.
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Affiliation(s)
- Pallavi Sinha
- Center of Excellence in Genomics and Systems Biology (CEGSB)International Crops Research Institute for the Semi‐Arid Tropics (ICRISAT)HyderabadIndia
| | - Prasad Bajaj
- Center of Excellence in Genomics and Systems Biology (CEGSB)International Crops Research Institute for the Semi‐Arid Tropics (ICRISAT)HyderabadIndia
| | - Lekha T. Pazhamala
- Center of Excellence in Genomics and Systems Biology (CEGSB)International Crops Research Institute for the Semi‐Arid Tropics (ICRISAT)HyderabadIndia
| | - Spurthi N. Nayak
- Center of Excellence in Genomics and Systems Biology (CEGSB)International Crops Research Institute for the Semi‐Arid Tropics (ICRISAT)HyderabadIndia
- Department of BiotechnologyUniversity of Agricultural Sciences (UAS)DharwadIndia
| | - Manish K. Pandey
- Center of Excellence in Genomics and Systems Biology (CEGSB)International Crops Research Institute for the Semi‐Arid Tropics (ICRISAT)HyderabadIndia
| | - Annapurna Chitikineni
- Center of Excellence in Genomics and Systems Biology (CEGSB)International Crops Research Institute for the Semi‐Arid Tropics (ICRISAT)HyderabadIndia
| | - Dongxin Huai
- Oil Crop Research Institute (OCRI)Chinese Academy of Agricultural Science (CAAS)WuhanChina
| | - Aamir W. Khan
- Center of Excellence in Genomics and Systems Biology (CEGSB)International Crops Research Institute for the Semi‐Arid Tropics (ICRISAT)HyderabadIndia
| | - Aarthi Desai
- Center of Excellence in Genomics and Systems Biology (CEGSB)International Crops Research Institute for the Semi‐Arid Tropics (ICRISAT)HyderabadIndia
| | - Huifang Jiang
- Oil Crop Research Institute (OCRI)Chinese Academy of Agricultural Science (CAAS)WuhanChina
| | - Weijian Zhuang
- College of Plant ProtectionFujian Agriculture and Forestry University (FAFU)FuzhouChina
| | - Baozhu Guo
- USDA‐ARS Crop Protection and Management Research Unit (CPMRU)TiftonGAUSA
| | - Boshou Liao
- Oil Crop Research Institute (OCRI)Chinese Academy of Agricultural Science (CAAS)WuhanChina
| | - Rajeev K. Varshney
- Center of Excellence in Genomics and Systems Biology (CEGSB)International Crops Research Institute for the Semi‐Arid Tropics (ICRISAT)HyderabadIndia
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Liu Y, Fang X, Sun X, Niu B, Chen Q. Detection of Allergen Genes in Peanut and Soybean by Circular Fluorescence Probe-Mediated Isothermal Amplification. FOOD ANAL METHOD 2020. [DOI: 10.1007/s12161-020-01883-4] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
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12
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Pandey MK, Pandey AK, Kumar R, Nwosu CV, Guo B, Wright GC, Bhat RS, Chen X, Bera SK, Yuan M, Jiang H, Faye I, Radhakrishnan T, Wang X, Liang X, Liao B, Zhang X, Varshney RK, Zhuang W. Translational genomics for achieving higher genetic gains in groundnut. TAG. THEORETICAL AND APPLIED GENETICS. THEORETISCHE UND ANGEWANDTE GENETIK 2020; 133:1679-1702. [PMID: 32328677 PMCID: PMC7214508 DOI: 10.1007/s00122-020-03592-2] [Citation(s) in RCA: 38] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/05/2019] [Accepted: 04/01/2020] [Indexed: 05/13/2023]
Abstract
KEY MESSAGE Groundnut has entered now in post-genome era enriched with optimum genomic and genetic resources to facilitate faster trait dissection, gene discovery and accelerated genetic improvement for developing climate-smart varieties. Cultivated groundnut or peanut (Arachis hypogaea), an allopolyploid oilseed crop with a large and complex genome, is one of the most nutritious food. This crop is grown in more than 100 countries, and the low productivity has remained the biggest challenge in the semiarid tropics. Recently, the groundnut research community has witnessed fast progress and achieved several key milestones in genomics research including genome sequence assemblies of wild diploid progenitors, wild tetraploid and both the subspecies of cultivated tetraploids, resequencing of diverse germplasm lines, genome-wide transcriptome atlas and cost-effective high and low-density genotyping assays. These genomic resources have enabled high-resolution trait mapping by using germplasm diversity panels and multi-parent genetic populations leading to precise gene discovery and diagnostic marker development. Furthermore, development and deployment of diagnostic markers have facilitated screening early generation populations as well as marker-assisted backcrossing breeding leading to development and commercialization of some molecular breeding products in groundnut. Several new genomics applications/technologies such as genomic selection, speed breeding, mid-density genotyping assay and genome editing are in pipeline. The integration of these new technologies hold great promise for developing climate-smart, high yielding and more nutritious groundnut varieties in the post-genome era.
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Affiliation(s)
- Manish K Pandey
- International Crops Research Institute for the Semi-Arid Tropics (ICRISAT), Hyderabad, India.
- University of Southern Queensland (USQ), Toowoomba, Australia.
| | - Arun K Pandey
- International Crops Research Institute for the Semi-Arid Tropics (ICRISAT), Hyderabad, India
| | - Rakesh Kumar
- International Crops Research Institute for the Semi-Arid Tropics (ICRISAT), Hyderabad, India
- Central University of Karnataka, Gulbarga, India
| | | | - Baozhu Guo
- Crop Protection and Management Research Unit, United State Department of Agriculture - Agricultural Research Service (USDA-ARS), Tifton, USA
| | - Graeme C Wright
- University of Southern Queensland (USQ), Toowoomba, Australia
- Peanut Company of Australia (PCA), Kingaroy, Australia
| | - Ramesh S Bhat
- University of Agricultural Sciences (UAS), Dharwad, India
| | - Xiaoping Chen
- Crops Research Institute (CRI), Guangdong Academy of Agricultural Sciences (GAAS), Guangzhou, China
| | - Sandip K Bera
- ICAR-Directorate of Groundnut Research (DGR), Junagadh, India
| | - Mei Yuan
- Shandong Peanut Research Institute (SPRI), Qingdao, China
| | - Huifang Jiang
- Oil Crops Research Institute (OCRI), Chinese Academy of Agricultural Sciences (CAAS), Wuhan, China
| | - Issa Faye
- Institut Sénégalais de Recherches Agricoles (ISRA)-Centre National de Recherches Agronomiques (CNRA), Bambey, Senegal
| | | | - Xingjun Wang
- Biotechnology Research Center, Shandong Academy of Agricultural Sciences (SAAS), Jinan, China
| | - Xuanquiang Liang
- Crops Research Institute (CRI), Guangdong Academy of Agricultural Sciences (GAAS), Guangzhou, China
| | - Boshou Liao
- Oil Crops Research Institute (OCRI), Chinese Academy of Agricultural Sciences (CAAS), Wuhan, China
| | - Xinyou Zhang
- Henan Academy of Agricultural Sciences (HAAS), Zhenzhou, China
| | - Rajeev K Varshney
- International Crops Research Institute for the Semi-Arid Tropics (ICRISAT), Hyderabad, India.
| | - Weijian Zhuang
- Institute of Oil Crops, Fujian Agriculture and Forestry University, Fuzhou, 350002, China.
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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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14
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Ojiewo CO, Janila P, Bhatnagar-Mathur P, Pandey MK, Desmae H, Okori P, Mwololo J, Ajeigbe H, Njuguna-Mungai E, Muricho G, Akpo E, Gichohi-Wainaina WN, Variath MT, Radhakrishnan T, Dobariya KL, Bera SK, Rathnakumar AL, Manivannan N, Vasanthi RP, Kumar MVN, Varshney RK. Advances in Crop Improvement and Delivery Research for Nutritional Quality and Health Benefits of Groundnut ( Arachis hypogaea L.). FRONTIERS IN PLANT SCIENCE 2020; 11:29. [PMID: 32153601 PMCID: PMC7046547 DOI: 10.3389/fpls.2020.00029] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/01/2019] [Accepted: 01/13/2020] [Indexed: 05/28/2023]
Abstract
Groundnut is an important global food and oil crop that underpins agriculture-dependent livelihood strategies meeting food, nutrition, and income security. Aflatoxins, pose a major challenge to increased competitiveness of groundnut limiting access to lucrative markets and affecting populations that consume it. Other drivers of low competitiveness include allergens and limited shelf life occasioned by low oleic acid profile in the oil. Thus grain off-takers such as consumers, domestic, and export markets as well as processors need solutions to increase profitability of the grain. There are some technological solutions to these challenges and this review paper highlights advances in crop improvement to enhance groundnut grain quality and nutrient profile for food, nutrition, and economic benefits. Significant advances have been made in setting the stage for marker-assisted allele pyramiding for different aflatoxin resistance mechanisms-in vitro seed colonization, pre-harvest aflatoxin contamination, and aflatoxin production-which, together with pre- and post-harvest management practices, will go a long way in mitigating the aflatoxin menace. A breakthrough in aflatoxin control is in sight with overexpression of antifungal plant defensins, and through host-induced gene silencing in the aflatoxin biosynthetic pathway. Similarly, genomic and biochemical approaches to allergen control are in good progress, with the identification of homologs of the allergen encoding genes and development of monoclonal antibody based ELISA protocol to screen for and quantify major allergens. Double mutation of the allotetraploid homeologous genes, FAD2A and FAD2B, has shown potential for achieving >75% oleic acid as demonstrated among introgression lines. Significant advances have been made in seed systems research to bridge the gap between trait discovery, deployment, and delivery through innovative partnerships and action learning.
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Affiliation(s)
- Chris O. Ojiewo
- Research Program – Genetic Gains, International Crops Research Institute for the Semi-Arid Tropics (ICRISAT), Nairobi, Kenya
| | - Pasupuleti Janila
- Research Program – Genetic Gains, International Crops Research Institute for the Semi-Arid Tropics (ICRISAT), Hyderabad, India
| | - Pooja Bhatnagar-Mathur
- Research Program – Genetic Gains, International Crops Research Institute for the Semi-Arid Tropics (ICRISAT), Hyderabad, India
| | - Manish K. Pandey
- Research Program – Genetic Gains, International Crops Research Institute for the Semi-Arid Tropics (ICRISAT), Hyderabad, India
| | - Haile Desmae
- Research Program – West and Central Africa, International Crops Research Institute for the Semi-Arid Tropics (ICRISAT), Bamako, Mali
| | - Patrick Okori
- Research Program – Eastern and Southern Africa, International Crops Research Institute for the Semi-Arid Tropics (ICRISAT), Lilongwe, Malawi
| | - James Mwololo
- Research Program – Eastern and Southern Africa, International Crops Research Institute for the Semi-Arid Tropics (ICRISAT), Lilongwe, Malawi
| | - Hakeem Ajeigbe
- Research Program – West and Central Africa, International Crops Research Institute for the Semi-Arid Tropics (ICRISAT), Kano, Nigeria
| | - Esther Njuguna-Mungai
- Research Program – Genetic Gains, International Crops Research Institute for the Semi-Arid Tropics (ICRISAT), Nairobi, Kenya
| | - Geoffrey Muricho
- Research Program – Genetic Gains, International Crops Research Institute for the Semi-Arid Tropics (ICRISAT), Nairobi, Kenya
| | - Essegbemon Akpo
- Research Program – Genetic Gains, International Crops Research Institute for the Semi-Arid Tropics (ICRISAT), Nairobi, Kenya
| | - Wanjiku N. Gichohi-Wainaina
- Research Program – Eastern and Southern Africa, International Crops Research Institute for the Semi-Arid Tropics (ICRISAT), Lilongwe, Malawi
| | - Murali T. Variath
- Research Program – Genetic Gains, International Crops Research Institute for the Semi-Arid Tropics (ICRISAT), Hyderabad, India
| | - Thankappan Radhakrishnan
- Indian Council of Agricultural Research - Directorate of Groundnut Research (ICAR-DGR), Junagadh, India
| | - Kantilal L. Dobariya
- Main Oilseeds Research Station, Junagadh Agricultural University (JAU), Junagadh, India
| | - Sandip Kumar Bera
- Indian Council of Agricultural Research - Directorate of Groundnut Research (ICAR-DGR), Junagadh, India
| | | | - Narayana Manivannan
- National Pulses Research Center, Tamil Nadu Agricultural University (TNAU), Pudukkottai, India
| | - Ragur Pandu Vasanthi
- Regional Agricultural Research Station, Acharya NG Ranga Agricultural University (ANGRAU), Tirupati, India
| | - Mallela Venkata Nagesh Kumar
- Department of Genetics and Plant Breeding, Professor Jayashankar Telangana State Agricultural University (PJTSAU), Hyderabad, India
| | - Rajeev K. Varshney
- Research Program – Genetic Gains, International Crops Research Institute for the Semi-Arid Tropics (ICRISAT), Hyderabad, India
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Pandey AK, Sudini HK, Upadhyaya HD, Varshney RK, Pandey MK. Hypoallergen Peanut Lines Identified Through Large-Scale Phenotyping of Global Diversity Panel: Providing Hope Toward Addressing One of the Major Global Food Safety Concerns. Front Genet 2019; 10:1177. [PMID: 31827488 PMCID: PMC6890724 DOI: 10.3389/fgene.2019.01177] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2019] [Accepted: 10/24/2019] [Indexed: 01/14/2023] Open
Abstract
Peanut allergy is one of the serious health concern and affects more than 1% of the world's population mainly in Americas, Australia, and Europe. Peanut allergy is sometimes life-threatening and adversely affect the life quality of allergic individuals and their families. Consumption of hypoallergen peanuts is the best solution, however, not much effort has been made in this direction for identifying or developing hypoallergen peanut varieties. A highly diverse peanut germplasm panel was phenotyped using a recently developed monoclonal antibody-based ELISA protocol to quantify five major allergens. Results revealed a wide phenotypic variation for all the five allergens studied i.e., Ara h 1 (4-36,833 µg/g), Ara h 2 (41-77,041 µg/g), Ara h 3 (22-106,765 µg/g), Ara h 6 (829-103,892 µg/g), and Ara h 8 (0.01-70.12 µg/g). The hypoallergen peanut genotypes with low levels of allergen proteins for Ara h 1 (4 µg/g), Ara h 2 (41 µg/g), Ara h 3 (22 µg/g), Ara h 6 (829 µg/g), and Ara h 8 (0.01 µg/g) have paved the way for their use in breeding and genomics studies. In addition, these hypoallergen peanut genotypes are available for use in cultivation and industry, thus opened up new vistas for fighting against peanut allergy problem across the world.
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Affiliation(s)
| | | | | | | | - Manish K. Pandey
- International Crops Research Institute for the Semi-Arid Tropics (ICRISAT), Hyderabad, India
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