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Ramos-Gómez S, Busto MD, Ortega N. Detection of Hazelnut and Almond Adulteration in Olive Oil: An Approach by qPCR. Molecules 2023; 28:molecules28104248. [PMID: 37241987 DOI: 10.3390/molecules28104248] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2023] [Revised: 05/19/2023] [Accepted: 05/20/2023] [Indexed: 05/28/2023] Open
Abstract
Virgin olive oil (VOO), characterized by its unique aroma, flavor, and health benefits, is subject to adulteration with the addition of oils obtained from other edible species. The consumption of adulterated olive oil with nut species, such as hazelnut or almond, leads to health and safety issues for consumers, due to their high allergenic potential. To detect almond and hazelnut in olive oil, several amplification systems have been analyzed by qPCR assay with a SYBR Green post-PCR melting curve analysis. The systems selected were Cora1F2/R2 and Madl, targeting the genes coding the allergenic protein Cor a 1 (hazelnut) and Pru av 1 (almond), respectively. These primers revealed adequate specificity for each of the targeted species. In addition, the result obtained demonstrated that this methodology can be used to detect olive oil adulteration with up to 5% of hazelnut or almond oil by a single qPCR assay, and with a level as low as 2.5% by a nested-qPCR assay. Thus, the present research has shown that the SYBR-based qPCR assay can be a rapid, precise, and accurate method to detect adulteration in olive oil.
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Affiliation(s)
- Sonia Ramos-Gómez
- Department of Biotechnology and Food Science, Area of Biochemistry and Molecular Biology, University of Burgos, Plaza Misael Bañuelos s/n, 09001 Burgos, Spain
| | - María D Busto
- Department of Biotechnology and Food Science, Area of Biochemistry and Molecular Biology, University of Burgos, Plaza Misael Bañuelos s/n, 09001 Burgos, Spain
| | - Natividad Ortega
- Department of Biotechnology and Food Science, Area of Biochemistry and Molecular Biology, University of Burgos, Plaza Misael Bañuelos s/n, 09001 Burgos, Spain
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2
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Chen X, Zhang D, Liu Q, Liu S, Li H, Li Z. Enzyme-Linked Immunosorbent Assay-Based Microarray on a Chip for Bioaerosol Sensing: Toward Sensitive and Multiplexed Profiling of Foodborne Allergens. Anal Chem 2023; 95:7354-7362. [PMID: 37098245 DOI: 10.1021/acs.analchem.3c00591] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/27/2023]
Abstract
Food allergy has become a growing health concern that may impair life quality and even cause life-threatening outcomes. Accidental and continuous exposure to allergenic bioaerosols has a substantially negative impact on the respiratory health of patients. Traditional analytical methodologies for food allergens are restricted by strong reliance on bulk instrumentation and skilled personnel, particularly in low-resource settings. In this study, a fluorescent sensor array based on the enzyme-linked immunosorbent assay performed on a herringbone-shaped microfluidic chip (ELISA-HB-chip) was designed for dynamically sensitive and multiplexed quantification of foodborne allergens in aerosols that originated from liquid food extracts. Due to the high surface area of aerosol particles and sufficient mixing of immunological reagents using a herringbone micromixer, the detection sensitivity was improved by over an order of magnitude compared to traditional allergen detection in the aqueous phase. Through fluorescence imaging of multiple regions on the ELISA-HB-chip, four important foodborne allergens, namely, ovalbumin, ovomucoid, lysozyme, and tropomyosin, could be simultaneously monitored without any cross-reactivity, and the limits of detection for these allergenic species were determined to be 7.8, 1.2, 4.2, and 0.31 ng/mL, respectively. Combining with a 3D printed and portable fluorescence microscope, this platform exhibited an excellent field-deployable capacity for quick and accurate determination of allergens in the aerosol state from spiked buffer solutions, thus displaying the practicality for food safety screening at cooking or food processing sites where patients are potentially under exposure to allergenic bioaerosols that escaped from food matrices or extracts.
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Affiliation(s)
- Xiaofeng Chen
- Institute for Advanced Study, Shenzhen University, Shenzhen, Guangdong 518060, China
| | - Dongdong Zhang
- Tianjin First Central Hospital, School of Medicine, Nankai University, Tianjin 300071, China
| | - Qingmei Liu
- College of Ocean Food and Biologic Engineering, Jimei University, Xiamen, Fujian 361021, China
| | - Sihui Liu
- Institute for Advanced Study, Shenzhen University, Shenzhen, Guangdong 518060, China
| | - Houlin Li
- Institute for Advanced Study, Shenzhen University, Shenzhen, Guangdong 518060, China
| | - Zheng Li
- Institute for Advanced Study, Shenzhen University, Shenzhen, Guangdong 518060, China
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3
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Chen X, Zhao L, Wang J, Wang H, Qiu Y, Dong Z, Zhang C, Liu M, Wang X, Bai X. Rapid visual detection of anisakid nematodes using recombinase polymerase amplification and SYBR Green I. Front Microbiol 2022; 13:1026129. [PMID: 36532447 PMCID: PMC9756439 DOI: 10.3389/fmicb.2022.1026129] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2022] [Accepted: 11/11/2022] [Indexed: 12/03/2023] Open
Abstract
Anisakidosis is a food-borne parasitic disease (FBPD) caused by the third-stage larvae of the family Anisakidae. Therefore, it is important to develop a simple, rapid and equipment-free detection method for anisakids in fish samples or seafood since current methods are time-consuming and require complex instruments. In this study, a recombinase polymerase amplification (RPA)-based method was established for the first time to detect anisakids by targeting the internal transcribed spacer (ITS) regions. The detection results were visualized by including SYBR Green I (SG) in the method. The sensitivity of RPA-SG assay was 102 copies per reaction of recombinant plasmid (within 20 min at 37°C), similar to quantitative real-time PCR (qPCR). The assay had high specificity for detecting anisakids against other related parasites and host fish. In addition, the assay was further used to detect fresh marine fish contaminated with anisakids and it showed high precision. These results indicate that the novel RPA-SG assay suitable for visual detection of anisakids in the field and food safety control.
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Affiliation(s)
- Xiuqin Chen
- State Key Laboratory of Zoonotic Diseases, Key Laboratory for Zoonosis Research of the Ministry of Education, Institute of Zoonosis, and College of Veterinary Medicine, Jilin University, Changchun, China
- Institute of Animal Husbandry and Veterinary Medicine, Fujian Academy of Agricultural Science, Fuzhou, China
| | - Lianjing Zhao
- State Key Laboratory of Zoonotic Diseases, Key Laboratory for Zoonosis Research of the Ministry of Education, Institute of Zoonosis, and College of Veterinary Medicine, Jilin University, Changchun, China
| | - Jiahui Wang
- China National Center for Food Safety Risk Assessment, Beijing, China
| | - Haolu Wang
- State Key Laboratory of Zoonotic Diseases, Key Laboratory for Zoonosis Research of the Ministry of Education, Institute of Zoonosis, and College of Veterinary Medicine, Jilin University, Changchun, China
| | - Yangyuan Qiu
- State Key Laboratory of Zoonotic Diseases, Key Laboratory for Zoonosis Research of the Ministry of Education, Institute of Zoonosis, and College of Veterinary Medicine, Jilin University, Changchun, China
| | - Zijian Dong
- State Key Laboratory of Zoonotic Diseases, Key Laboratory for Zoonosis Research of the Ministry of Education, Institute of Zoonosis, and College of Veterinary Medicine, Jilin University, Changchun, China
| | - Chunling Zhang
- State Key Laboratory of Zoonotic Diseases, Key Laboratory for Zoonosis Research of the Ministry of Education, Institute of Zoonosis, and College of Veterinary Medicine, Jilin University, Changchun, China
| | - Mingyuan Liu
- State Key Laboratory of Zoonotic Diseases, Key Laboratory for Zoonosis Research of the Ministry of Education, Institute of Zoonosis, and College of Veterinary Medicine, Jilin University, Changchun, China
- Jiangsu Co-innovation Center for Prevention and Control of Important Animal Infectious Diseases and Zoonoses, Yangzhou, China
| | - Xuelin Wang
- State Key Laboratory of Zoonotic Diseases, Key Laboratory for Zoonosis Research of the Ministry of Education, Institute of Zoonosis, and College of Veterinary Medicine, Jilin University, Changchun, China
| | - Xue Bai
- State Key Laboratory of Zoonotic Diseases, Key Laboratory for Zoonosis Research of the Ministry of Education, Institute of Zoonosis, and College of Veterinary Medicine, Jilin University, Changchun, China
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Abstract
This review provides a global overview on Rosaceae allergy and details the particularities of each fruit allergy induced by ten Rosaceae species: almond/peach/cherry/apricot/plum (Amygdaleae), apple/pear (Maleae), and raspberry/blackberry/strawberry (Rosoideae). Data on clinical symptoms, prevalence, diagnosis, and immunotherapies for the treatment of Rosaceae allergy are herein stated. Allergen molecular characterization, cross-reactivity/co-sensitization phenomena, the impact of food processing and digestibility, and the methods currently available for the Rosaceae detection/quantification in foods are also described. Rosaceae allergy has a major impact in context to pollen-food allergy syndrome (PFAS) and lipid transfer protein (LTP) allergies, being greatly influenced by geography, environment, and presence of cofactors. Peach, apple, and almond allergies are probably the ones most affecting the quality of life of the allergic-patients, although allergies to other Rosaceae fruits cannot be overlooked. From patients' perspective, self-allergy management and an efficient avoidance of multiple fruits are often difficult to achieve, which might raise the risk for cross-reactivity and co-sensitization phenomena and increase the severity of the induced allergic responses with time. At this point, the absence of effective allergy diagnosis (lack of specific molecular markers) and studies advancing potential immunotherapies are some gaps that certainly will prompt the progress on novel strategies to manage Rosaceae food allergies.
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Affiliation(s)
- Joana Costa
- REQUIMTE-LAQV, Faculdade de Farmácia, Universidade do Porto, Porto, Portugal
| | - Isabel Mafra
- REQUIMTE-LAQV, Faculdade de Farmácia, Universidade do Porto, Porto, Portugal
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5
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Civera A, Galan-Malo P, Segura-Gil I, Mata L, Tobajas AP, Sánchez L, Pérez MD. Development of sandwich ELISA and lateral flow immunoassay to detect almond in processed food. Food Chem 2022; 371:131338. [PMID: 34808766 DOI: 10.1016/j.foodchem.2021.131338] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2021] [Revised: 09/09/2021] [Accepted: 10/01/2021] [Indexed: 11/30/2022]
Abstract
Almond (Prunus dulcis) represents a potential allergenic hazard that should be included in Allergen Control Plans. In this study, sandwich ELISA and lateral flow immunoassay (LFIA), using amandin (Pru du 6) as the target protein, were developed to detect almond in processed food and validated according to international guides. ELISA could detect 2 ng/mL and LFIA 30 ng/mL of pure amandin. No cross-reactivity was found on a panel of 50 food commodities with the exception of Pecan nut, Brazil nut and chestnut for which the cross-reactivity was lower than 0.02%. Furthermore, ELISA and LFIA were able to detect 0.12 and 0.70 ppm of almond protein in foods spiked with almond extract whereas 0.20 and 2.0 ppm could be detected in baked cookies incurred with almond, respectively. Both techniques could be applied for food manufacturers and control agencies for monitoring the presence of almond traces in food and working surfaces.
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Affiliation(s)
- Alba Civera
- Departamento de Producción Animal y Ciencia de los Alimentos, Facultad de Veterinaria, Instituto Agroalimentario de Aragón (IA2) (Universidad de Zaragoza-CITA), Miguel Servet, 177, 50013 Zaragoza, Spain
| | | | - Isabel Segura-Gil
- Departamento de Producción Animal y Ciencia de los Alimentos, Facultad de Veterinaria, Instituto Agroalimentario de Aragón (IA2) (Universidad de Zaragoza-CITA), Miguel Servet, 177, 50013 Zaragoza, Spain; ZEULAB S.L., Polígono PLAZA, Bari, 25 Duplicado, 50197 Zaragoza, Spain
| | - Luis Mata
- ZEULAB S.L., Polígono PLAZA, Bari, 25 Duplicado, 50197 Zaragoza, Spain
| | - Ana P Tobajas
- Departamento de Producción Animal y Ciencia de los Alimentos, Facultad de Veterinaria, Instituto Agroalimentario de Aragón (IA2) (Universidad de Zaragoza-CITA), Miguel Servet, 177, 50013 Zaragoza, Spain
| | - Lourdes Sánchez
- Departamento de Producción Animal y Ciencia de los Alimentos, Facultad de Veterinaria, Instituto Agroalimentario de Aragón (IA2) (Universidad de Zaragoza-CITA), Miguel Servet, 177, 50013 Zaragoza, Spain
| | - María D Pérez
- Departamento de Producción Animal y Ciencia de los Alimentos, Facultad de Veterinaria, Instituto Agroalimentario de Aragón (IA2) (Universidad de Zaragoza-CITA), Miguel Servet, 177, 50013 Zaragoza, Spain.
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6
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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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7
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Detection of Peanut Allergen by Real-Time PCR: Looking for a Suitable Detection Marker as Affected by Processing. Foods 2021; 10:foods10061421. [PMID: 34207461 PMCID: PMC8234062 DOI: 10.3390/foods10061421] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2021] [Revised: 06/07/2021] [Accepted: 06/15/2021] [Indexed: 12/23/2022] Open
Abstract
Peanut (Arachis hypogaea) contains allergenic proteins, which make it harmful to the sensitised population. The presence of peanut in foods must be indicated on label, to prevent accidental consumption by allergic population. In this work, we use chloroplast markers for specific detection of peanut by real-time PCR (Polymerase Chain Reaction), in order to increase the assay sensitivity. Binary mixtures of raw and processed peanut flour in wheat were performed at concentrations ranging from 100,000 to 0.1 mg/kg. DNA isolation from peanut, mixtures, and other legumes was carried out following three protocols for obtaining genomic and chloroplast-enrich DNA. Quantity and quality of DNA were evaluated, obtaining better results for protocol 2. Specificity and sensitivity of the method has been assayed with specific primers for three chloroplast markers (mat k, rpl16, and trnH-psbA) and Ara h 6 peanut allergen-coding region was selected as nuclear low-copy target and TaqMan probes. Efficiency and linear correlation of calibration curves were within the adequate ranges. Mat k chloroplast marker yielded the most sensitive and efficient detection for peanut. Moreover, detection of mat K in binary mixtures of processed samples was possible for up to 10 mg/kg even after boiling, and autoclave 121 °C 15 min, with acceptable efficiency and linear correlation. Applicability of the method has been assayed in several commercial food products.
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8
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Sanchiz A, Cuadrado C, Haddad J, Linacero R. Effect of Instant Controlled Pressure Drop (DIC) Treatment on the Detection of Nut Allergens by Real Time PCR. Foods 2020; 9:E729. [PMID: 32503109 PMCID: PMC7353585 DOI: 10.3390/foods9060729] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2020] [Revised: 05/16/2020] [Accepted: 05/19/2020] [Indexed: 11/23/2022] Open
Abstract
Tree nuts show nutritional properties and human health benefits. However, they contain allergenic proteins, which make them harmful to the sensitised population. The presence of tree nuts on food labelling is mandatory and, consequently, the development of suitable analytical methodologies to detect nuts in processed foods is advisable. Real-Time PCR allowed a specific and accurate amplification of allergen sequences. Some food processing methods could induce structural and/or conformational changes in proteins by altering their allergenic capacity, as well as produce the fragmentation and/or degradation of genomic DNA. In this work, we analysed by means of Real-Time PCR, the influence of pressure and thermal processing through Instant Controlled Pressure Drop (DIC) on the detectability of hazelnut, pistachio and cashew allergens. The detection of targets in hazelnut, pistachio and cashew (Cor a 9, Pis v 1 and Ana o 1, respectively) is affected by the treatment to different extents depending on the tree nut. Results are compared to those previously obtained by our group in the analysis of different treatments on the amplificability of the same targets. Reduction in amplificability is similar to that reported for some autoclave conditions. Our assays might allow for the detection of up to 1000 mg/kg of hazelnut, pistachio and cashew flours after being submitted to DIC treatment in food matrices.
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Affiliation(s)
- Africa Sanchiz
- Food Technology Department, SGIT-INIA, Ctra. La Coruña Km. 7.5, 28040 Madrid, Spain; (A.S.); (C.C.)
| | - Carmen Cuadrado
- Food Technology Department, SGIT-INIA, Ctra. La Coruña Km. 7.5, 28040 Madrid, Spain; (A.S.); (C.C.)
| | - Joseph Haddad
- Laboratory Engineering Science for Environment (UMR 7356 CNRS), La Rochelle University, Avenue Michel Crepeau, 17042 La Rochelle, France;
- Food Science and Technology Department, Faculty of Agriculture, Lebanese University, Dekweneh, 11111 Beirut, Lebanon
| | - Rosario Linacero
- Genetics, Physiology and Microbiology Department, Biology Faculty, Complutense University, 28040 Madrid, Spain
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Sanchiz Á, Ballesteros I, López-García A, Ramírez A, Rueda J, Cuadrado C, Linacero R. Chestnut allergen detection in complex food products: Development and validation of a real-time PCR method. Lebensm Wiss Technol 2020. [DOI: 10.1016/j.lwt.2020.109067] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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10
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Dolch K, Judas M, Schwägele F, Brüggemann D. Development and validation of two triplex real-time PCR systems for the simultaneous detection of six cereal species in processed meat products. Food Control 2019. [DOI: 10.1016/j.foodcont.2019.02.025] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Miyazaki A, Watanabe S, Ogata K, Nagatomi Y, Kokutani R, Minegishi Y, Tamehiro N, Sakai S, Adachi R, Hirao T. Real-time PCR Detection Methods for Food Allergens (Wheat, Buckwheat, and Peanuts) Using Reference Plasmids. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2019; 67:5680-5686. [PMID: 31062597 DOI: 10.1021/acs.jafc.9b01234] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Specific and sensitive real-time qualitative polymerase chain reaction (PCR) methods for the detection of food allergens including wheat, buckwheat, and peanuts were developed that could cancel between instrument effects and avoid risks of false-positives and false-negatives. In these real-time PCR analysis, the cutoff for determination of positive samples was set in every PCR run by using reference plasmids containing known copies of the target sequences. The copy numbers of the plasmids were used to detect the allergenic ingredients corresponding to 10 ppm (w/w) protein in highly processed foods (cooked for more than 30 min at 122 °C). Reference plasmid analysis for each real-time PCR run helped to minimize variability between runs and instruments (7900HT Real-Time PCR systems and Light Cycler Nano). It also helped to avoid false positives due to trace levels of contaminants from the laboratory environment or agricultural products. The specificity of the real-time PCR method was verified using 79 commonly used food materials and some of their relatives. The method was sensitive enough to detect those allergenic ingredients corresponding to 10 ppm (w/w) in seven types of incurred samples. The current official Japanese method was not able to detect the allergens in some of the incurred samples. The developed method can avoid false negatives due to lack of sensitivity and is useful to confirm positive ELISA screening tests.
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Affiliation(s)
- Akiko Miyazaki
- Research and Development Headquarters , House Foods Group Inc. , 1-4 Takanodai , Yotsukaido , Chiba 284-0033 , Japan
| | - Satoshi Watanabe
- Research and Development Headquarters , House Foods Group Inc. , 1-4 Takanodai , Yotsukaido , Chiba 284-0033 , Japan
| | - Kyoko Ogata
- FASMAC CO., Ltd. , 5-1-3 Midorigaoka , Atsugi , Kanagawa 243-0041 , Japan
| | - Yasuaki Nagatomi
- FASMAC CO., Ltd. , 5-1-3 Midorigaoka , Atsugi , Kanagawa 243-0041 , Japan
| | - Ryota Kokutani
- NIPPON GENE Co., Ltd. , 2-7-18 Toiya-machi , Toyama 930-0834 , Japan
| | | | - Norimasa Tamehiro
- National Institute of Health Sciences , 3-25-26 Tonomachi , Kawasaki-ku, Kawasaki , Kanagawa 210-9501 , Japan
| | - Shinobu Sakai
- National Institute of Health Sciences , 3-25-26 Tonomachi , Kawasaki-ku, Kawasaki , Kanagawa 210-9501 , Japan
| | - Reiko Adachi
- National Institute of Health Sciences , 3-25-26 Tonomachi , Kawasaki-ku, Kawasaki , Kanagawa 210-9501 , Japan
| | - Takashi Hirao
- Research and Development Headquarters , House Foods Group Inc. , 1-4 Takanodai , Yotsukaido , Chiba 284-0033 , Japan
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12
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Senyuva HZ, Jones IB, Sykes M, Baumgartner S. A critical review of the specifications and performance of antibody and DNA-based methods for detection and quantification of allergens in foods. Food Addit Contam Part A Chem Anal Control Expo Risk Assess 2019; 36:507-547. [PMID: 30856064 DOI: 10.1080/19440049.2019.1579927] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Abstract
Despite the availability of a large number of antibody and DNA based methods for detection and quantification of allergens in food there remain significant difficulties in selecting the optimum technique to employ. Published methods from research groups mostly contain sufficient detail concerning target antigen, calibration procedures and method performance to allow replication by others. However, routine allergen testing by the food industry relies upon commercialised test kits and frequently the suppliers provide disappointingly little specification detail on the grounds that this is proprietary information. In this review we have made a critical assessment of the published literature describing the performance of both commercial and non-commercial test kits for food allergens over the period 2008-2018. Mass spectrometric methods, which have the potential to become reference methods for allergens, are not covered in this review. Available information on the specifications of commercial ELISA and LFD test kits are tabulated for milk, egg and peanut allergens, where possible linking to publications concerning collaborative studies and proficiency testing. For a number of commercial PCR test kits, specifications provided by manufacturers for detection of a small selection of allergen are tabulated. In conclusion we support the views of others of the critical need for allergen reference materials as the way forward to improve the comparability of different testing strategies in foods.
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Affiliation(s)
| | - Ivona Baricevic Jones
- b Institute of Inflammation and Repair , Manchester Institute of Biotechnology , Manchester , UK
| | - Mark Sykes
- c Fera Science Ltd , National Agri-Food Innovation Campus Sand Hutton , York , UK
| | - Sabine Baumgartner
- d Dept. IFA-Tulln, Center for Analytical Chemistry , BOKU Vienna , Tulln , Austria
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Linacero R, Sanchiz A, Ballesteros I, Cuadrado C. Application of real-time PCR for tree nut allergen detection in processed foods. Crit Rev Food Sci Nutr 2019; 60:1077-1093. [PMID: 30638046 DOI: 10.1080/10408398.2018.1557103] [Citation(s) in RCA: 27] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Abstract
Currently, food allergies are an important health concern worldwide. The presence of undeclared allergenic ingredients or the presence of traces of allergens due to accidental contamination during food processing poses a great health risk to sensitized individuals. Therefore, reliable analytical methods are required to detect and identify allergenic ingredients in food products. Real-time PCR allowed a specific and accurate amplification of allergen sequences. Some processing methods could induce the fragmentation and/or degradation of genomic DNA and some studies have been performed to analyze the effect of processing on the detection of different targets, as thermal treatment, with and without applying pressure. In this review, we give an updated overview of the applications of real-time PCR for the detection of allergens of tree nut in processed food products. The different variables that contribute to the performance of PCR methodology for allergen detection are also review and discussed.
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Affiliation(s)
- Rosario Linacero
- Departamento de Genética, Fisiología y Microbiología, Facultad de Biología, Universidad Complutense de Madrid, Madrid, Spain
| | - Africa Sanchiz
- Departamento de Tecnología de Alimentos, SGIT-INIA, Madrid, Spain
| | - Isabel Ballesteros
- Ingeniería en Biotecnología, Facultad de Ingenierías y Ciencias Aplicadas, Universidad de las Américas, Quito, Ecuador
| | - Carmen Cuadrado
- Departamento de Tecnología de Alimentos, SGIT-INIA, Madrid, Spain
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14
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Sanchiz Á, Ballesteros I, Marqués E, Dieguez MC, Rueda J, Cuadrado C, Linacero R. Evaluation of locked nucleic acid and TaqMan probes for specific detection of cashew nut in processed food by real time PCR. Food Control 2018. [DOI: 10.1016/j.foodcont.2018.02.021] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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15
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Li X, Yuan S, Huang M, Gao J, Wu Z, Tong P, Yang A, Chen H. Identification of IgE and IgG epitopes on native Bos d 4 allergen specific to allergic children. Food Funct 2018; 7:2996-3005. [PMID: 27273451 DOI: 10.1039/c6fo00416d] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Alpha-lactalbumin (ALA) is one of the major allergens in cow's milk. However, research on its conformational epitopes has been relatively limited. In our study, specific antibodies against cow's milk ALA were purified from eight children by two-step affinity chromatography. Subsequently, mimotopes against IgG and IgE were biopanned from Ph.D.-12 and Ph.D.-C7C, respectively. Based on the mimotopes, linear epitopes were defined with the UniProt alignment tool. Conformational epitopes were computed using the Pepitope Server. Six IgE and seven IgG linear epitopes were identified. Meanwhile, five IgE and three IgG conformational epitopes were revealed with PyMOL. The results showed that common residues were identified in both IgE and IgG epitopes and some residues of the conformational epitopes were composed of linear epitopes on bovine α-lactalbumin. The results indicated that the data could be used for developing hypoallergenic dairy products on the basis of epitopes and providing a diagnostic tool for the assessment of patients who are allergic to cow's milk.
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Affiliation(s)
- Xin Li
- State Key Laboratory of Food Science and Technology, Nanchang University, Nanchang 330047, P.R.China and School of Food Science & Technology, Nanchang University, Nanchang 330047, P.R.China
| | - Shuilin Yuan
- State Key Laboratory of Food Science and Technology, Nanchang University, Nanchang 330047, P.R.China and School of Food Science & Technology, Nanchang University, Nanchang 330047, P.R.China
| | - Meijia Huang
- State Key Laboratory of Food Science and Technology, Nanchang University, Nanchang 330047, P.R.China and School of Food Science & Technology, Nanchang University, Nanchang 330047, P.R.China
| | - Jinyan Gao
- School of Food Science & Technology, Nanchang University, Nanchang 330047, P.R.China
| | - Zhihua Wu
- State Key Laboratory of Food Science and Technology, Nanchang University, Nanchang 330047, P.R.China and Jiangxi-OAI Joint Research Institute, Nanchang University, Nanchang 330047, P.R.China.
| | - Ping Tong
- State Key Laboratory of Food Science and Technology, Nanchang University, Nanchang 330047, P.R.China and School of Food Science & Technology, Nanchang University, Nanchang 330047, P.R.China
| | - Anshu Yang
- State Key Laboratory of Food Science and Technology, Nanchang University, Nanchang 330047, P.R.China and Jiangxi-OAI Joint Research Institute, Nanchang University, Nanchang 330047, P.R.China.
| | - Hongbing Chen
- State Key Laboratory of Food Science and Technology, Nanchang University, Nanchang 330047, P.R.China and Jiangxi-OAI Joint Research Institute, Nanchang University, Nanchang 330047, P.R.China.
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16
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Quantitative SYBR Green qPCR technique for the detection of the nematode parasite Anisakis in commercial fish-derived food. Int J Food Microbiol 2017; 261:89-94. [DOI: 10.1016/j.ijfoodmicro.2017.05.012] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2017] [Revised: 05/12/2017] [Accepted: 05/15/2017] [Indexed: 11/23/2022]
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17
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Liu C, Chhabra GS, Zhao J, Zaffran VD, Gupta S, Roux KH, Gradziel TM, Sathe SK. Comparison of Laboratory-Developed and Commercial Monoclonal Antibody-Based Sandwich Enzyme-Linked Immunosorbent Assays for Almond (Prunus dulcis) Detection and Quantification. J Food Sci 2017; 82:2504-2515. [PMID: 28869652 DOI: 10.1111/1750-3841.13829] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2017] [Revised: 06/13/2017] [Accepted: 07/07/2017] [Indexed: 01/18/2023]
Abstract
A commercially available monoclonal antibody (mAb)-based direct sandwich enzyme-linked immunosorbent assay (ELISA) kit (BioFront Technologies, Tallahassee, Fla., U.S.A.) was compared with an in-house developed mAb 4C10-based ELISA for almond detection. The assays were comparable in sensitivity (limit of detection < 1 ppm full fat almond, limit of quantification < 5 ppm full fat almond), specificity (no cross-reactivity with 156 tested foods at a concentration of 100000 ppm whole sample), and reproducibility (intra- and interassay variability < 15% CV). The target antigens were stable and detectable in whole almond seeds subjected to autoclaving, blanching, frying, microwaving, and dry roasting. The almond recovery ranges for spiked food matrices were 84.3% to 124.6% for 4C10 ELISA and 81.2% to 127.4% for MonoTrace ELISA. The almond recovery ranges for commercial and laboratory prepared foods with declared/known almond amount were 30.9% to 161.2% for 4C10 ELISA and 38.1% to 207.6% for MonoTrace ELISA. Neither assay registered any false-positive or negative results among the tested commercial and laboratory prepared samples. PRACTICAL APPLICATION Ability to detect and quantify trace amounts of almonds is important for improving safety of almond sensitive consumers. Two monoclonal antibody-based ELISAs were compared for almond detection. The information is useful to food industry, regulatory agencies, scientific community, and almond consumers.
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Affiliation(s)
- Changqi Liu
- Dept. of Nutrition, Food & Exercise Sciences, Florida State Univ., Tallahassee, FL, 32306-1490, U.S.A
| | - Guneet S Chhabra
- Dept. of Nutrition, Food & Exercise Sciences, Florida State Univ., Tallahassee, FL, 32306-1490, U.S.A
| | - Jing Zhao
- Dept. of Nutrition, Food & Exercise Sciences, Florida State Univ., Tallahassee, FL, 32306-1490, U.S.A
| | - Valerie D Zaffran
- Dept. of Nutrition, Food & Exercise Sciences, Florida State Univ., Tallahassee, FL, 32306-1490, U.S.A
| | - Sahil Gupta
- Dept. of Nutrition, Food & Exercise Sciences, Florida State Univ., Tallahassee, FL, 32306-1490, U.S.A
| | - Kenneth H Roux
- Dept. of Biological Science, Florida State Univ., Tallahassee, FL, 32306-4370, U.S.A
| | - Thomas M Gradziel
- Dept. of Plant Sciences, Univ. of California, Davis, CA, 95616, U.S.A
| | - Shridhar K Sathe
- Dept. of Nutrition, Food & Exercise Sciences, Florida State Univ., Tallahassee, FL, 32306-1490, U.S.A
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18
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Detection of pistachio allergen coding sequences in food products: A comparison of two real time PCR approaches. Food Control 2017. [DOI: 10.1016/j.foodcont.2016.12.015] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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19
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Wu J, Chen L, Lin D, Ma Z, Deng X. Development and Application of a Multiplex Real-Time PCR Assay as an Indicator of Potential Allergenicity in Citrus Fruits. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2016; 64:9089-9098. [PMID: 27794596 DOI: 10.1021/acs.jafc.6b03410] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
The effects of tissue type, harvest maturity, and genetic factors on the expression of genes that related to citrus fruit allergies remain poorly understood. In the present study, a multiplex real-time PCR assay was developed to monitor the expression of citrus allergen genes individually with the advantages of much fewer sample requirements and simultaneously multiple target genes detection. Gene specific primer pairs and Taqman probes of three citrus allergen genes Cit s 1.01, Cit s 2.01, and Cit s 3.01 and the house-keeping gene β-actin were designed based on gene sequence differences. The PCR results showed that differential expression patterns were found during the ripening process. The expression levels of Cit s 3.01 were much higher than those of Cit s 1.01 and Cit s 2.01 in both peel and pulp tissues among 10 citrus cultivars. Data suggested that Kao Phuang Pummelo could be safely consumed with a potential low risk in allergenicity. Considering that assessing allergenicity is one of the tests in food safety, this assay might also facilitate the breeding and production of "allergy-friendly" citrus fruits.
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Affiliation(s)
- Jinlong Wu
- Key Laboratory of Horticultural Plant Biology (Ministry of Education), Huazhong Agricultural University , Wuhan 430070, China
| | - Lin Chen
- Key Laboratory of Horticultural Plant Biology (Ministry of Education), Huazhong Agricultural University , Wuhan 430070, China
| | - Dingbo Lin
- Department of Nutritional Sciences, Oklahoma State University , 419 Human Sciences, Stillwater, Oklahoma 74078, United States
| | - Zhaocheng Ma
- Key Laboratory of Horticultural Plant Biology (Ministry of Education), Huazhong Agricultural University , Wuhan 430070, China
| | - Xiuxin Deng
- Key Laboratory of Horticultural Plant Biology (Ministry of Education), Huazhong Agricultural University , Wuhan 430070, China
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Detection by real time PCR of walnut allergen coding sequences in processed foods. Food Chem 2016; 202:334-40. [DOI: 10.1016/j.foodchem.2016.01.132] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2015] [Revised: 01/25/2016] [Accepted: 01/29/2016] [Indexed: 11/30/2022]
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21
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Bioanalytical methods for food allergy diagnosis, allergen detection and new allergen discovery. Bioanalysis 2016; 7:1175-90. [PMID: 26039813 DOI: 10.4155/bio.15.49] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022] Open
Abstract
For effective monitoring and prevention of the food allergy, one of the emerging health problems nowadays, existing diagnostic procedures and allergen detection techniques are constantly improved. Meanwhile, new methods are also developed, and more and more putative allergens are discovered. This review describes traditional methods and summarizes recent advances in the fast evolving field of the in vitro food allergy diagnosis, allergen detection in food products and discovery of the new allergenic molecules. A special attention is paid to the new diagnostic methods under laboratory development like various immuno- and aptamer-based assays, including immunoaffinity capillary electrophoresis. The latter technique shows the importance of MS application not only for the allergen detection but also for the allergy diagnosis.
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