1
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Smits NG, De Dominicis E, Koops AJ, Kraan R, Saner S, Van Der Fels-Klerx H, Hoek-van den Hil E. Comparison of commercial allergen ELISA kits for egg detection in food matrices. Heliyon 2023; 9:e19687. [PMID: 37780752 PMCID: PMC10539936 DOI: 10.1016/j.heliyon.2023.e19687] [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: 07/17/2023] [Revised: 08/28/2023] [Accepted: 08/30/2023] [Indexed: 10/03/2023] Open
Abstract
Consumption of low levels of egg already can evoke harmful physiological responses in humans in those allergic to eggs. By detection of egg in food products, using Egg ELISA kits to determine its unintended presence, food producers can respond to avoid potential safety or quality risks of their products. Selection of an ELISA kit fit for the issue at hand is challenging due to, amongst others, lack of information on assay performances with specified matrices. In this study, performances of seven commercial egg ELISA kits are compared for nine different relevant matrices: cookie, chocolate, pasta, dressing, stock cube, wine, vegetable drink and milk, ice cream and meat/meat replacers. The presence of egg was unified for all ELISA kits to mg total egg protein kg-1 food product. In every matrix, kit performances for recovery, intra- and interassay were compared, and also processing is accounted for by determination of egg in incurred samples. All seven kits were able to detect egg qualitatively at the VITAL3 ED01 level of 0.2 mg total egg protein and the corresponding relevant portion size for each matrix. For quantitative results, each ELISA kit showed an increase in detected egg concentration with increased egg levels and performed within the set criteria for recovery for the cookie, chocolate, stock cube and wine. For pasta, vegetable drink and milk, ice cream, and salad dressing, recovery of egg was within the set criteria for at least 4 ELISA kits. Most challenging matrices were meat/meat replacers, showing high matrix effects which could not be explained by the possible egg presence in the cognate blank. Only one ELISA kit was able to recover egg within the set criteria for the meat/meat replacer matrix. Results enable food industry to choose for ELISA kits suitable for egg detection in the matrix of interest.
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Affiliation(s)
- Nathalie G.E. Smits
- Wageningen Food Safety Research, Wageningen University and Research, P.O. Box 230, 6700, AE, Wageningen, the Netherlands
| | | | - Andries J. Koops
- Wageningen Food Safety Research, Wageningen University and Research, P.O. Box 230, 6700, AE, Wageningen, the Netherlands
| | - Rian Kraan
- Wageningen Food Safety Research, Wageningen University and Research, P.O. Box 230, 6700, AE, Wageningen, the Netherlands
| | - Samim Saner
- Mérieux NutriSciences R&D, Quality, Operation, France
| | - H.J. Van Der Fels-Klerx
- Wageningen Food Safety Research, Wageningen University and Research, P.O. Box 230, 6700, AE, Wageningen, the Netherlands
| | - Elise Hoek-van den Hil
- Wageningen Food Safety Research, Wageningen University and Research, P.O. Box 230, 6700, AE, Wageningen, the Netherlands
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2
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Birse N, Burns DT, Walker MJ, Quaglia M, Elliott CT. Food allergen analysis: A review of current gaps and the potential to fill them by matrix-assisted laser desorption/ionization. Compr Rev Food Sci Food Saf 2023; 22:3984-4003. [PMID: 37530543 DOI: 10.1111/1541-4337.13216] [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: 10/28/2022] [Revised: 07/01/2023] [Accepted: 07/10/2023] [Indexed: 08/03/2023]
Abstract
Food allergy remains a public health, business, and regulatory challenge. Risk analysis (RA) and risk management (RM) of food allergens are of great importance and analysis for food allergens is necessary for both. The current workhorse techniques for allergen analysis (enzyme linked immunosorbent assay [ELISA] and real-time polymerase chain reaction) exhibit recognized challenges including variable and antibody specific responses and detection of species DNA rather than allergen protein, respectively. Liquid chromatography-tandem mass spectrometry (LC-MS/MS) enables protein identification, with potential for multiplex analysis and traceability to the System of International units (SI), aiding global measurement standardization. In this review, recent literature has been systematically reviewed to assess progress in LC-MS/MS and define the potential and benefits of matrix-assisted laser desorption/ionization-time-of-flight MS (MALDI-ToF-MS) technology for allergen analysis. MALDI-ToF-MS of initially intact protein is already applied to verify in silico-derived peptide sequences for LC-MS/MS analysis. We describe the origins of MALDI and its future perspectives, including affinity bead-assisted assays coupled to MALDI. Based on the proliferation of reliable and reproducible MALDI-based clinical applications, the technique should emulate the detection capability (sensitivity) of established allergen detection techniques, whilst reducing technical support and having equivalent multiplexing potential to competing techniques, for example, LC-MS/MS and ELISA. Although unlikely to offer inherent SI traceability, MALDI-based allergen analysis will complement existing MS approaches for allergens. Affinity bead-MALDI appears capable of higher throughput at lower cost per sample than almost any existing technique, enabling repeated sub-sampling as a way to reduce representative sampling issues.
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Affiliation(s)
- Nicholas Birse
- Institute for Global Food Security, School of Biological Sciences, Queen's University Belfast, Belfast, Northern Ireland, UK
| | - Duncan Thorburn Burns
- Institute for Global Food Security, School of Biological Sciences, Queen's University Belfast, Belfast, Northern Ireland, UK
| | - Michael J Walker
- Institute for Global Food Security, School of Biological Sciences, Queen's University Belfast, Belfast, Northern Ireland, UK
| | | | - Christopher T Elliott
- Institute for Global Food Security, School of Biological Sciences, Queen's University Belfast, Belfast, Northern Ireland, UK
- School of Food Science and Technology, Faculty of Science and Technology, Thammasat University (Rangsit Campus), Khlong Luang, Pathum Thani, Thailand
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3
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Wang Y, Zhou J, Peng H, Ma J, Li H, Li L, Li T, Fang Z, Ma A, Fu L. High-Throughput Identification of Allergens in a Food System via Hybridization Probe Cluster-Targeted Next-Generation Sequencing. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2021; 69:11992-12001. [PMID: 34498855 DOI: 10.1021/acs.jafc.1c03595] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Food allergies (FAs) are a crucial public health problem and a severe food safety issue, resulting in an urgent need for an accurate method to detect all of the hidden allergens that exist in food systems. Current methods for detecting allergens typically utilize ELISA, PCR, or LC-MS, which are suitable for the confirmatory analysis of allergens from ingredients rather than unintended contaminants. In this study, we demonstrate a hybridization probe cluster-targeted next-generation sequencing (HPC-NGS) platform for high-throughput screening of potential allergens in food systems. The HPC-NGS successfully captured target DNA fragments and identified 19 allergenic ingredients in a complex food system. Additionally, the HPC-NGS provided expected allergenic species matching rates of 94.24-100% in single food materials and 99.87-99.98% in processed food products. Thus, HPC-NGS enables the accurate characterization of allergenic ingredients and unintended allergenic contaminants in foods. Our results provide new perspectives on the use of HPC-NGS in the accuracy of high-throughput detection technologies for allergens imposed by the complex matrix effect.
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Affiliation(s)
- Yanbo Wang
- Food Safety Key Laboratory of Zhejiang Province, School of Food Science and Biotechnology, Zhejiang Gongshang University, 18 Xue Zheng Street, Hangzhou 310018, Zhejiang, P. R. China
| | - Jinru Zhou
- Food Safety Key Laboratory of Zhejiang Province, School of Food Science and Biotechnology, Zhejiang Gongshang University, 18 Xue Zheng Street, Hangzhou 310018, Zhejiang, P. R. China
| | - Hai Peng
- Institute for Systems Biology, Jianghan University, Wuhan 430056, Hubei, P. R. China
| | - Junjie Ma
- Food Safety Key Laboratory of Zhejiang Province, School of Food Science and Biotechnology, Zhejiang Gongshang University, 18 Xue Zheng Street, Hangzhou 310018, Zhejiang, P. R. China
| | - Huan Li
- Food Safety Key Laboratory of Zhejiang Province, School of Food Science and Biotechnology, Zhejiang Gongshang University, 18 Xue Zheng Street, Hangzhou 310018, Zhejiang, P. R. China
| | - Lun Li
- Institute for Systems Biology, Jianghan University, Wuhan 430056, Hubei, P. R. China
| | - Tiantian Li
- Institute for Systems Biology, Jianghan University, Wuhan 430056, Hubei, P. R. China
| | - Zhiwei Fang
- Institute for Systems Biology, Jianghan University, Wuhan 430056, Hubei, P. R. China
| | - Aijin Ma
- College of Food and Health, Beijing Technology and Business University, Beijing 100048, P. R. China
| | - Linglin Fu
- Food Safety Key Laboratory of Zhejiang Province, School of Food Science and Biotechnology, Zhejiang Gongshang University, 18 Xue Zheng Street, Hangzhou 310018, Zhejiang, P. R. China
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4
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Abstract
Food manufacturers are aiming to manage the levels of cross-contamination of allergens within food processing plants and ultimately move away from precautionary labelling. Hence, the need for rapid methods to detect allergens cross-contamination. A sensitive and selective label-free nanoMIPs based sensor was developed and tested for the detection of β-lactoglobulin (BLG). NanoMIPs were synthesized using solid-phase synthesis and appeared as spherical nanoparticles with sizes ranging from 264–294 nm, using dynamic light scattering (DLS). The nanoMIPs were functionalized with amine groups and attached to the surface of the SPR gold chip via amine-coupling protocol. The SPR nanoMIPs-based sensor demonstrated a detection limit of 3 ng mL−1 (211 pM) over a linear range of 1–5000 ng mL−1, with binding affinity of 7.0 × 10−8 M and specificity towards BLG. With further testing and final optimization, the developed nanosensor can be integrated on-line or at-line cleaning-in-place (CIP) wash systems, allowing to effectively monitor milk protein allergens as a rapid, point-of-source methodology.
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5
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Holzhauser T, Johnson P, Hindley JP, O'Connor G, Chan CH, Costa J, Fæste CK, Hirst BJ, Lambertini F, Miani M, Robert MC, Röder M, Ronsmans S, Bugyi Z, Tömösközi S, Flanagan SD. Are current analytical methods suitable to verify VITAL® 2.0/3.0 allergen reference doses for EU allergens in foods? Food Chem Toxicol 2020; 145:111709. [PMID: 32866515 DOI: 10.1016/j.fct.2020.111709] [Citation(s) in RCA: 67] [Impact Index Per Article: 16.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2020] [Revised: 08/21/2020] [Accepted: 08/24/2020] [Indexed: 01/25/2023]
Abstract
Food allergy affects up to 6% of Europeans. Allergen identification is important for the risk assessment and management of the inadvertent presence of allergens in foods. The VITAL® initiative for voluntary incidental trace allergen labeling suggests protein reference doses, based on clinical reactivity in food challenge studies, at or below which voluntary labelling is unnecessary. Here, we investigated if current analytical methodology could verify the published VITAL® 2.0 doses, that were available during this analysis, in serving sizes between 5 and 500 g. Available data on published and commercial ELISA, PCR and mass spectrometry methods, especially for the detection of peanuts, soy, hazelnut, wheat, cow's milk and hen's egg were reviewed in detail. Limit of detection, quantitative capability, matrix compatibility, and specificity were assessed. Implications by the recently published VITAL® 3.0 doses were also considered. We conclude that available analytical methods are capable of reasonably robust detection of peanut, soy, hazelnut and wheat allergens for levels at or below the VITAL® 2.0 and also 3.0 doses, with some methods even capable of achieving this in a large 500 g serving size. Cow's milk and hen's egg are more problematic, largely due to matrix/processing incompatibility. An unmet need remains for harmonized reporting units, available reference materials, and method ring-trials to enable validation and the provision of comparable measurement results.
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Affiliation(s)
- Thomas Holzhauser
- Paul-Ehrlich-Institut, Division of Allergology, D-63225, Langen, Germany.
| | - Philip Johnson
- University of Nebraska-Lincoln, Department of Food Science and Technology, FARRP, Rm 266 Food Innovation Center, 1901 N 21 Street, PO Box 886207, Lincoln, NE, 68588-6207, USA.
| | | | - Gavin O'Connor
- Physikalisch-Technische Bundesanstalt, Bundesallee 100, 38116, Braunschweig, Germany.
| | | | - Joana Costa
- REQUIMTE-LAQV, Faculdade de Farmácia, Universidade do Porto, Rua de Jorge Viterbo Ferreira, 228, 4050-313, Porto, Portugal.
| | - Christiane K Fæste
- Norwegian Veterinary Institute, Toxicology Research Group, P.O. Box 750 Sentrum, 0106, Oslo, Norway.
| | | | | | - Michela Miani
- International Life Sciences Institute, European Branch, ILSI Europe a.i.s.b.l., Brussels, Belgium.
| | - Marie-Claude Robert
- Nestlé Research, Institute of Food Safety and Analytical Sciences, Lausanne, Switzerland.
| | - Martin Röder
- Ifp Institut für Produktqualität GmbH, Wagner-Régeny-Str. 8, 12489, Berlin, Germany.
| | | | - Zsuzsanna Bugyi
- Budapest University of Technology and Economics, Department of Applied Biotechnology and Food Science, Research Group of Cereal Science and Food Quality, Budapest, Hungary.
| | - Sándor Tömösközi
- Budapest University of Technology and Economics, Department of Applied Biotechnology and Food Science, Research Group of Cereal Science and Food Quality, Budapest, Hungary.
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6
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Villa C, Costa J, Mafra I. Detection and Quantification of Milk Ingredients as Hidden Allergens in Meat Products by a Novel Specific Real-Time PCR Method. Biomolecules 2019; 9:biom9120804. [PMID: 31795410 PMCID: PMC6995640 DOI: 10.3390/biom9120804] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2019] [Revised: 11/26/2019] [Accepted: 11/27/2019] [Indexed: 11/16/2022] Open
Abstract
Milk ingredients are often included in a wide range of meat products, such as cooked hams and sausages, to improve technological characteristics. However, milk proteins are also important food allergens. The aim of this study was the development of a highly sensitive and specific real-time PCR system targeting the 12S rRNA gene of Bos domesticus for the detection and quantification of milk as an allergenic ingredient in processed meat products. The method was able to achieve an absolute limit of detection (LOD) of 6 fg of milk DNA. Using a normalized approach (∆Ct method) for the detection of milk protein concentrate (MPC), it was possible to obtain sensitivities down to 0.01% (w/w) of MPC in model hams (raw and cooked) and autoclaved sausages, and 0.005% in raw sausage mixtures. The developed systems generally presented acceptable PCR performance parameters, being successfully validated with blind samples, applied to commercial samples, and further compared with an immunochemical assay. Trace amounts of milk material were quantified in two out of 13 samples, but the results mostly infer the excessive practice of the precautionary labeling.
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Affiliation(s)
| | - Joana Costa
- Correspondence: (J.C.); (I.M.); Tel.: +351-220-428-500 ext. 8848 (I.M.)
| | - Isabel Mafra
- Correspondence: (J.C.); (I.M.); Tel.: +351-220-428-500 ext. 8848 (I.M.)
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7
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Galan-Malo P, Pellicer S, Pérez MD, Sánchez L, Razquin P, Mata L. Development of a novel duplex lateral flow test for simultaneous detection of casein and β-lactoglobulin in food. Food Chem 2019; 293:41-48. [DOI: 10.1016/j.foodchem.2019.04.039] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2018] [Revised: 03/21/2019] [Accepted: 04/09/2019] [Indexed: 10/27/2022]
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8
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A chiral assembly of gold nanoparticle trimer-based biosensors for ultrasensitive detection of the major allergen tropomyosin in shellfish. Biosens Bioelectron 2019; 132:84-89. [DOI: 10.1016/j.bios.2019.02.038] [Citation(s) in RCA: 27] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2018] [Revised: 02/09/2019] [Accepted: 02/13/2019] [Indexed: 12/21/2022]
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9
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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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10
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The role of incurred materials in method development and validation to account for food processing effects in food allergen analysis. Anal Bioanal Chem 2019; 411:4465-4480. [PMID: 30758527 DOI: 10.1007/s00216-019-01642-3] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2018] [Revised: 01/22/2019] [Accepted: 01/24/2019] [Indexed: 12/12/2022]
Abstract
The issue of undeclared allergens represents a matter of great concern, being the subject of many alert notifications by the Rapid Alert System for Food and Feed portal of the European Commission, often leading to food recalls. The availability of reliable analytical approaches able to detect and quantify hidden allergens in processed foods is increasingly requested by the food industry, food safety authorities and regulatory bodies to protect sensitive consumers' health. The present review discusses the fundamental role of incurred materials for method development and analytical performance assessment in a metrology perspective on testing for undeclared allergens in processed foodstuffs. Due to the nature of the analytes and their susceptibility to various processing effects, reliability and comparability of results have posed a great challenge. In this context, the use of incurred samples as reference materials permits simulation of the effects of food processing on target analyte structure affecting analyte extractability and detectability. Graphical abstract ᅟ.
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11
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Development of a β-Lactoglobulin Sensor Based on SPR for Milk Allergens Detection. BIOSENSORS-BASEL 2018; 8:bios8020032. [PMID: 29584662 PMCID: PMC6023029 DOI: 10.3390/bios8020032] [Citation(s) in RCA: 42] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/21/2018] [Revised: 02/14/2018] [Accepted: 03/20/2018] [Indexed: 12/25/2022]
Abstract
A sensitive and label-free surface plasmon resonance (SPR) based sensor was developed in this work for the detection of milk allergens. β-lactoglobulin (BLG) protein was used as the biomarker for cow milk detection. This is to be used directly in final rinse samples of cleaning in-place (CIP) systems of food manufacturers. The affinity assay was optimised and characterised before a standard curve was performed in pure buffer conditions, giving a detection limit of 0.164 µg mL-1 as a direct binding assay. The detection limit can be further enhanced through the use of a sandwich assay and amplification with nanomaterials. However, this was not required here, as the detection limit achieved exceeded the required allergen detection levels of 2 µg mL-1 for β-lactoglobulin. The binding affinities of the polyclonal antibody for BLG, expressed by the dissociation constant (KD), were equal to 2.59 × 10-9 M. The developed SPR-based sensor offers several advantages in terms of label-free detection, real-time measurements, potential on-line system and superior sensitivity when compared to ELISA-based techniques. The method is novel for this application and could be applied to wider food allergen risk management decision(s) in food manufacturing.
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12
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Ashley J, Shukor Y, D’Aurelio R, Trinh L, Rodgers TL, Temblay J, Pleasants M, Tothill IE. Synthesis of Molecularly Imprinted Polymer Nanoparticles for α-Casein Detection Using Surface Plasmon Resonance as a Milk Allergen Sensor. ACS Sens 2018; 3:418-424. [PMID: 29333852 DOI: 10.1021/acssensors.7b00850] [Citation(s) in RCA: 57] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
Food recalls due to undeclared allergens or contamination are costly to the food manufacturing industry worldwide. As the industry strives for better manufacturing efficiencies over a diverse range of food products, there is a need for the development of new analytical techniques to improve monitoring of the presence of unintended food allergens during the food manufacturing process. In particular, the monitoring of wash samples from cleaning in place systems (CIP), used in the cleaning of food processing equipment, would allow for the effective removal of allergen containing ingredients in between food batches. Casein proteins constitute the biggest group of proteins in milk and hence are the most common milk protein allergen in food ingredients. As such, these proteins could present an ideal analyte for cleaning validation. In this work, molecularly imprinted polymer nanoparticles (nanoMIPs) with high affinity toward bovine α-casein were synthesized using a solid-phase imprinting method. The nanoMIPs were then characterized and incorporated into label free surface plasmon resonance (SPR) based sensor. The nanoMIPs demonstrated good binding affinity and selectivity toward α-casein (KD ∼ 10 × 10-9 M). This simple affinity sensor demonstrated the quantitative detection of α-casein achieving a detection limit of 127 ± 97.6 ng mL-1 (0.127 ppm) which is far superior to existing commercially available ELISA kits. Recoveries from spiked CIP wastewater samples were within the acceptable range (87-120%). The reported sensor could allow food manufacturers to adequately monitor and manage food allergen risk in food processing environments while ensuring that the food produced is safe for the consumer.
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Affiliation(s)
- Jon Ashley
- Cranfield University, Advanced Diagnostics
and Sensors Group, Cranfield, Bedford, MK43 0AL, United Kingdom
| | - Yunus Shukor
- Department
of Biochemistry, Faculty of Biotechnology and Biomolecular Sciences, Universiti Putra Malaysia, 43400 UPM Serdang, Selangor, Malaysia
| | - Roberta D’Aurelio
- Cranfield University, Advanced Diagnostics
and Sensors Group, Cranfield, Bedford, MK43 0AL, United Kingdom
| | - Linda Trinh
- University of Manchester, School of Chemical Engineering
and Analytical Science, Oxford Road, Manchester, M13 9PL, United Kingdom
| | - Thomas L. Rodgers
- University of Manchester, School of Chemical Engineering
and Analytical Science, Oxford Road, Manchester, M13 9PL, United Kingdom
| | - Jeff Temblay
- Safety and Environmental Assurance Centre, Colworth Science Park, Unilever plc, Sharnbrook, Bedford, MK44 1LQ United Kingdom
| | - Mike Pleasants
- Safety and Environmental Assurance Centre, Colworth Science Park, Unilever plc, Sharnbrook, Bedford, MK44 1LQ United Kingdom
| | - Ibtisam E. Tothill
- Cranfield University, Advanced Diagnostics
and Sensors Group, Cranfield, Bedford, MK43 0AL, United Kingdom
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13
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Villa C, Costa J, Oliveira MBP, Mafra I. Bovine Milk Allergens: A Comprehensive Review. Compr Rev Food Sci Food Saf 2017; 17:137-164. [DOI: 10.1111/1541-4337.12318] [Citation(s) in RCA: 102] [Impact Index Per Article: 14.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2017] [Revised: 10/09/2017] [Accepted: 10/11/2017] [Indexed: 12/21/2022]
Affiliation(s)
- Caterina Villa
- REQUIMTE-LAQV, Faculdade de Farmácia; Univ. do Porto; Porto Portugal
| | - Joana Costa
- REQUIMTE-LAQV, Faculdade de Farmácia; Univ. do Porto; Porto Portugal
| | | | - Isabel Mafra
- REQUIMTE-LAQV, Faculdade de Farmácia; Univ. do Porto; Porto Portugal
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14
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Cossu A, Dou F, Young GM, Nitin N. Biomarkers of oxidative damage in bacteria for the assessment of sanitation efficacy in lettuce wash water. Appl Microbiol Biotechnol 2017; 101:5365-5375. [PMID: 28508923 DOI: 10.1007/s00253-017-8314-5] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2017] [Revised: 04/24/2017] [Accepted: 04/28/2017] [Indexed: 11/28/2022]
Abstract
In the fresh produce industry, validation of sanitation efficacy is critical to prevent cross-contamination of produce. The current validation approaches are either based on time-consuming plate counting assays or indirect measurements of chemical properties of wash water. In the study, the focus was to identify biomarkers that can provide direct assessment of oxidative damage in bacteria upon exposure to sanitizers in the presence of fresh produce and correlation of these oxidative biomarkers with logarithmic inactivation of bacteria. Two endogenous bacterial biomarkers, protein carbonylation and thiol oxidation, were evaluated for assessing oxidative damage in Escherichia coli O157:H7 and Listeria innocua during sanitation of pre-cut lettuce leaves with NaOCl or H2O2. Results show that NaOCl treatment was more effective than H2O2 for oxidation of both the intracellular thiols and protein carbonylation in the selected strains. Statistical analysis of the measurements illustrates that oxidation of the intracellular thiol induced by NaOCl or H2O2 was correlated with logarithmic reduction of E. coli O157:H7 and L. innocua. In contrast, changes in the protein carbonylation content were not correlated with reduction in bacterial cell viability. In summary, these results provide a novel approach to validate sanitation efficacy for the fresh produce industry.
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Affiliation(s)
- Andrea Cossu
- Department of Food Science and Technology, University of California, Davis, Robert Mondavi Institute South, 392 Old Davis Road, Davis, CA, 95616, USA
| | - Fang Dou
- Department of Food Science and Technology, University of California, Davis, Robert Mondavi Institute South, 392 Old Davis Road, Davis, CA, 95616, USA
| | - Glenn M Young
- Department of Food Science and Technology, University of California, Davis, Robert Mondavi Institute South, 392 Old Davis Road, Davis, CA, 95616, USA
| | - Nitin Nitin
- Department of Food Science and Technology, University of California, Davis, Robert Mondavi Institute South, 392 Old Davis Road, Davis, CA, 95616, USA.
- Department of Biological and Agricultural Engineering, University of California, Davis, Davis, CA, 95616, USA.
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15
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Chen Q, Pan XD, Huang BF. Authentication of shrimp muscle in complex foodstuff by in-solution digestion and high-resolution mass spectrometry. RSC Adv 2017. [DOI: 10.1039/c7ra04967f] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
A method for shrimp muscle identification in complex foods is required to safeguard the shrimp-allergic population.
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Affiliation(s)
- Qing Chen
- Zhejiang Provincial Center for Disease Control and Prevention
- Hangzhou
- China
| | - Xiao-Dong Pan
- Zhejiang Provincial Center for Disease Control and Prevention
- Hangzhou
- China
| | - Bai-Fen Huang
- Zhejiang Provincial Center for Disease Control and Prevention
- Hangzhou
- China
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16
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Costa J, Fernandes TJ, Villa C, P.P. Oliveira MB, Mafra I. Advances in Food Allergen Analysis. Food Saf (Tokyo) 2016. [DOI: 10.1002/9781119160588.ch9] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022] Open
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17
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Croote D, Quake SR. Food allergen detection by mass spectrometry: the role of systems biology. NPJ Syst Biol Appl 2016; 2:16022. [PMID: 28725476 PMCID: PMC5516885 DOI: 10.1038/npjsba.2016.22] [Citation(s) in RCA: 56] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2016] [Revised: 06/24/2016] [Accepted: 07/25/2016] [Indexed: 11/08/2022] Open
Abstract
Food allergy prevalence is rising worldwide, motivating the development of assays that can sensitively and reliably detect trace amounts of allergens in manufactured food. Mass spectrometry (MS) is a promising alternative to commonly employed antibody-based assays owing to its ability to quantify multiple proteins in complex matrices with high sensitivity. In this review, we discuss a targeted MS workflow for the quantitation of allergenic protein in food products that employs selected reaction monitoring (SRM). We highlight the aspects of SRM method development unique to allergen quantitation and identify opportunities for simplifying the process. One promising avenue identified through a comprehensive survey of published MS literature is the use of proteotypic peptides, which are peptides whose presence appears robust to variations in food matrix, sample preparation protocol, and MS instrumentation. We conclude that proteotypic peptides exist for a subset of allergenic milk, egg, and peanut proteins. For less studied allergens such as soy, wheat, fish, shellfish, and tree nuts, we offer guidance and tools for peptide selection and specificity verification as part of an interactive web database, the Allergen Peptide Browser (http://www.AllergenPeptideBrowser.org). With ongoing improvements in MS instrumentation, analysis software, and strategies for targeted quantitation, we expect an increasing role of MS as an analytical tool for ensuring regulatory compliance.
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Affiliation(s)
- Derek Croote
- Department of Bioengineering, Stanford University, Stanford, CA, USA
| | - Stephen R Quake
- Department of Bioengineering, Stanford University, Stanford, CA, USA
- Department of Applied Physics, Stanford University, Stanford, CA, USA
- Howard Hughes Medical Institute, Stanford University, Stanford, CA, USA
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18
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Ashley J, Piekarska M, Segers C, Trinh L, Rodgers T, Willey R, Tothill IE. An SPR based sensor for allergens detection. Biosens Bioelectron 2016; 88:109-113. [PMID: 27503408 DOI: 10.1016/j.bios.2016.07.101] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2016] [Revised: 07/26/2016] [Accepted: 07/28/2016] [Indexed: 10/21/2022]
Abstract
A simple, sensitive and label-free optical sensor method was developed for allergens analysis using α-casein as the biomarker for cow's milk detection, to be used directly in final rinse samples of cleaning in place systems (CIP) of food manufacturers. A Surface Plasmon Resonance (SPR) sensor chip consisting of four sensing arrays enabling the measurement of samples and control binding events simultaneously on the sensor surface was employed in this work. SPR offers several advantages in terms of label free detection, real time measurements and superior sensitivity when compared to ELISA based techniques. The gold sensor chip was used to immobilise α-casein-polyclonal antibody using EDC/NHS coupling procedure. The performance of the assay and the sensor was first optimised and characterised in pure buffer conditions giving a detection limit of 58ngmL-1 as a direct binding assay. The assay sensitivity can be further improved by using sandwich assay format and amplified with nanoparticles. However, at this stage this is not required as the detection limit achieved exceeded the required allergens detection levels of 2µgmL-1 for α-S1-casein. The sensor demonstrated good selectivity towards the α-casein as the target analyte and adequate recoveries from CIP final rinse wash samples. The sensor would be useful tool for monitoring allergen levels after cleaning procedures, providing additional data that may better inform upon wider food allergen risk management decision(s) that are made by food manufacturer. In particular, this sensor could potentially help validate or optimise cleaning practices for a given food manufacturing process.
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Affiliation(s)
- J Ashley
- Cranfield University, Advanced Diagnostics and Sensors Group, Cranfield, Bedford, MK43 0AL UK
| | - M Piekarska
- Cranfield University, Advanced Diagnostics and Sensors Group, Cranfield, Bedford, MK43 0AL UK
| | - C Segers
- Cranfield University, Advanced Diagnostics and Sensors Group, Cranfield, Bedford, MK43 0AL UK
| | - L Trinh
- University of Manchester, School of Chemical Engineering and Analytical Science, Oxford Road, Manchester, M13 9PL UK
| | - T Rodgers
- University of Manchester, School of Chemical Engineering and Analytical Science, Oxford Road, Manchester, M13 9PL UK
| | - R Willey
- Safety and Environmental Assurance Centre, Colworth Science Park, Unilever plc, Sharnbrook, Bedford, MK44 1LQ UK
| | - I E Tothill
- Cranfield University, Advanced Diagnostics and Sensors Group, Cranfield, Bedford, MK43 0AL UK.
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19
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Walker MJ, Burns DT, Elliott CT, Gowland MH, Mills ENC. Is food allergen analysis flawed? Health and supply chain risks and a proposed framework to address urgent analytical needs. Analyst 2016; 141:24-35. [DOI: 10.1039/c5an01457c] [Citation(s) in RCA: 47] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Food allergy is an increasing problem. If we fail to realise the promise of current risk assessment and risk management of food allergens through lack of ability to measure them reproducibly and with traceability to an international unit of measurement, the analytical community will have failed a significant societal challenge.
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Affiliation(s)
| | - D. T. Burns
- Institute for Global Food Security
- The Queen's University of Belfast
- Belfast
- UK
| | - C. T. Elliott
- Institute for Global Food Security
- The Queen's University of Belfast
- Belfast
- UK
| | | | - E. N. Clare Mills
- Institute of Inflammation and Repair
- Manchester Academic Health Sciences Centre
- Manchester Institute of Biotechnology
- University of Manchester
- Manchester M1 7DN
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20
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Allergen- und Allergierisikobewertung, Allergenmanagement und Lücken der europäischen Lebensmittelinformationsverordnung (LMIV). ALLERGO JOURNAL 2015. [DOI: 10.1007/s15007-015-0912-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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21
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Allergen and allergy risk assessment, allergen management, and gaps in the European Food Information Regulation (FIR): Are allergic consumers adequately protected by current statutory food safety and labelling regulations? ACTA ACUST UNITED AC 2015; 24:180-184. [PMID: 27069838 PMCID: PMC4792368 DOI: 10.1007/s40629-015-0066-0] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2015] [Accepted: 05/26/2015] [Indexed: 10/27/2022]
Abstract
Individuals suffering from IgE-mediated food allergies are obliged to systematically eliminate the culprit allergen from their diet. To support allergic consumers in avoiding food allergens to make informed and safe purchasing choices, the European Union (EU) Food Information Regulation (FIR) imposes a requirement to label the 13 most common allergenic foods (food groups) as ingredients in pre-packed and non-pre-packed foods. The as yet unregulated labelling of unintended presence of allergens has lead to a widespread use of precautionary allergen labelling (PAL) - despite established allergen management in many companies. This PAL significantly hampers making a safe food choice, or renders it largely unfeasible, since it is not possible to estimate the actual extent to which allergens are present in a product. Not only food-allergic consumers, but also the food industry, physicians, dieticians/nutritionists, as well as food regulators and law enforcement officers would benefit from a standardized labelling regulation for unintended presence of allergens. The following position paper highlights the chances of such a regulation on the basis of available data and the analytical methods for detecting allergenic components in the context of effective allergen management. On the basis of evidence-based allergen and allergy-risk assessment, the use of PAL should be restricted to only those allergens that are unavoidable and which represent an unacceptable risk for allergic consumers, e. g., when allergens are present at levels that exceed a clinically meaningful reference dose or in the case of unintended presence of particulate allergens (e. g., nuts or sesame seeds).
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22
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DunnGalvin A, Chan CH, Crevel R, Grimshaw K, Poms R, Schnadt S, Taylor SL, Turner P, Allen KJ, Austin M, Baka A, Baumert JL, Baumgartner S, Beyer K, Bucchini L, Fernández-Rivas M, Grinter K, Houben GF, Hourihane J, Kenna F, Kruizinga AG, Lack G, Madsen CB, Clare Mills EN, Papadopoulos NG, Alldrick A, Regent L, Sherlock R, Wal JM, Roberts G. Precautionary allergen labelling: perspectives from key stakeholder groups. Allergy 2015; 70:1039-51. [PMID: 25808296 DOI: 10.1111/all.12614] [Citation(s) in RCA: 103] [Impact Index Per Article: 11.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 03/16/2015] [Indexed: 01/22/2023]
Abstract
Precautionary allergen labelling (PAL) was introduced by the food industry to help manage and communicate the possibility of reaction from the unintended presence of allergens in foods. However, in its current form, PAL is counterproductive for consumers with food allergies. This review aims to summarize the perspectives of all the key stakeholders (including clinicians, patients, food industry and regulators), with the aim of defining common health protection and risk minimization goals. The lack of agreed reference doses has resulted in inconsistent application of PAL by the food industry and in levels of contamination that prompt withdrawal action by enforcement officers. So there is a poor relationship between the presence or absence of PAL and actual reaction risk. This has led to a loss of trust in PAL, reducing the ability of consumers with food allergies to make informed choices. The result has been reduced avoidance, reduced quality of life and increased risk-taking by consumers who often ignore PAL. All contributing stakeholders agree that PAL must reflect actual risk. PAL should be transparent and consistent with rules underpinning decision-making process being communicated clearly to all stakeholders. The use of PAL should indicate the possible, unintended presence of an allergen in a consumed portion of a food product at or above any proposed action level. This will require combined work by all stakeholders to ensure everyone understands the approach and its limitations. Consumers with food allergy then need to be educated to undertake individualized risk assessments in relation to any PAL present.
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Affiliation(s)
- A. DunnGalvin
- Department of Paediatrics and Child Health; School of Applied Psychology; University College Cork; Cork Ireland
| | - C.-H. Chan
- Food Allergy Branch; Food Standards Agency; Bedford UK
| | - R. Crevel
- Safety and Environmental Assurance Centre; Unilever; Colworth Science Park Sharnbrook Bedford UK
| | - K. Grimshaw
- Clinical and Experimental Sciences Academic Unit; University of Southampton Faculty of Medicine; Southampton UK
| | | | - S. Schnadt
- German Allergy and Asthma Association (Deutscher Allergie- und Asthmabund (DAAB)); Mönchengladbach Germany
| | - S. L. Taylor
- Food Allergy Research & Resource Program; University of Nebraska; Lincoln NE USA
| | - P. Turner
- Section of Paediatrics (Allergy and Infectious Diseases); MRC and Asthma UK Centre in Allergic Mechanisms of Asthma; Imperial College London; London UK
| | - K. J. Allen
- Centre of Food and Allergy Research; Murdoch Children's Research Institute; Melbourne Vic. Australia
- Department of Paediatrics; Royal Children's Hospital; Melbourne Vic. Australia
| | - M. Austin
- Anaphylaxis Campaign; Farnborough UK
| | - A. Baka
- ILSI Europe; Brussels Belgium
| | - J. L. Baumert
- Food Allergy Research & Resource Program; University of Nebraska; Lincoln NE USA
| | - S. Baumgartner
- Center for Analytical Chemistry; University of Natural Resources and Life Sciences; Vienna Austria
| | - K. Beyer
- Department of Paediatric Pneumology & Immunology; Charité University Medical Centre; Berlin Germany
| | | | | | - K. Grinter
- Allergen Bureau & Nestle; Rhodes New South Wales Australia
| | | | - J. Hourihane
- Paediatrics and Child Health; University College Cork; Cork Ireland
| | - F. Kenna
- Anaphylaxis Ireland; Cork Ireland
| | | | - G. Lack
- Division of Asthma, Allergy and Lung Biology; King's College London; MRC and Asthma UK Centre in Allergic Mechanisms of Asthma; Guy's and St Thomas’ NHS Foundation Trust; London UK
| | - C. B. Madsen
- National Food Institute; Technical University of Denmark; Søborg Denmark
| | - E. N. Clare Mills
- Institute of Inflammation and Repair; Manchester Academic Health Science Centre; Manchester Institute of Biotechnology; The University of Manchester; Manchester UK
| | - N. G. Papadopoulos
- Centre for Pediatrics and Child Health; Institute of Human Development; University of Manchester; Manchester UK
- Allergy Department; 2nd Pediatric Clinic; University of Athens; Athens Greece
| | | | - L. Regent
- Anaphylaxis Campaign; Farnborough UK
| | - R. Sherlock
- Allergen Bureau & DTS Facta; Hobart Australia
| | | | - G. Roberts
- Clinical and Experimental Sciences Academic Unit; University of Southampton Faculty of Medicine; Southampton UK
- David Hide Asthma and Allergy Research Centre; St Mary's Hospital; Isle of Wight
- NIHR Respiratory Biomedical Research Unit; University Hospital Southampton NHS Foundation Trust
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23
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Muraro A, Hoffmann-Sommergruber K, Holzhauser T, Poulsen LK, Gowland MH, Akdis CA, Mills ENC, Papadopoulos N, Roberts G, Schnadt S, van Ree R, Sheikh A, Vieths S. EAACI Food Allergy and Anaphylaxis Guidelines. Protecting consumers with food allergies: understanding food consumption, meeting regulations and identifying unmet needs. Allergy 2014; 69:1464-72. [PMID: 24888964 DOI: 10.1111/all.12453] [Citation(s) in RCA: 61] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 05/20/2014] [Indexed: 10/25/2022]
Abstract
Individuals suffering from IgE-mediated food allergy usually have to practise life-long food allergen avoidance. This document aims to provide an overview of recent evidence-based recommendations for allergen risk assessment and management in the food industry and discusses unmet needs and expectations of the food allergic consumer in that context. There is a general duty of care on the food industry and obligations in European Union legislation to reduce and manage the presence of allergens alongside other food hazards. Current evidence enables quantification of allergen reference doses used to set-up reliable food safety management plans for some foods. However, further work is required to include a wider variety of foods and to understand the impact of the food matrix as well as additional factors which affect the progression and severity of symptoms as a function of dose. Major concerns have been raised by patients, carers and patient groups about the use of precautionary 'may contain' labelling to address the issue of unintended presence of allergens; these therefore need to be reconsidered. New and improved allergen detection methods should be evaluated for their application in food production. There is an urgent requirement for effective communication between healthcare professionals, patient organizations, food industry representatives and regulators to develop a better approach to protecting consumers with food allergies.
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Affiliation(s)
- A. Muraro
- The Referral Centre for Food Allergy Diagnosis and Treatment Veneto Region; Department of Mother and Child Health; Padua University Hospital; Padua Italy
| | | | - T. Holzhauser
- Division of Allergology; Paul-Ehrlich Institute; Langen Germany
| | - L. K. Poulsen
- Allergy Clinic; Copenhagen University Hospital; Copenhagen Denmark
| | | | - C. A. Akdis
- Swiss Institute of Allergy and Asthma Research (SIAF); University of Zurich; Davos Switzerland
- Christine Kühne-Center for Allergy Research and Education (CK-CARE); Davos Switzerland
| | - E. N. C. Mills
- Institute of Inflammation and Repair; Manchester Academic Health Science Centre; Manchester Institute of Biotechnology; University of Manchester; Manchester UK
| | - N. Papadopoulos
- Allergy Department; 2nd Pediatric Clinic; University of Athens; Athens Greece
- Centre for Pediatrics and Child Health Institute of Human Development; The University of Manchester; Manchester UK
| | - G. Roberts
- David Hide Asthma and Allergy Research Centre; St Mary's Hospital; Isle of Wight UK
- Human Development in Health and Clinical and Experimental Sciences Academic Units; Faculty of Medicine; University of Southampton; Southampton UK
- NIHR Respiratory Biomedical Research Unit; NHS Foundation Trust; University Hospital Southampton; Southampton UK
| | - S. Schnadt
- Deutscher Allergie- und Asthmabund e.V.; Mönchengladbach Germany
| | - R. van Ree
- Departments of Experimental Immunology and Otorhinolaryngology; Academic Medical Center; Amsterdam University; Amsterdam the Netherlands
| | - A. Sheikh
- Allergy and Respiratory Research Group; Centre for Population Health Sciences; The University of Edinburgh; Edinburgh UK
- Department of Medicine; Harvard Medical School; Boston MA USA
- Division of General Internal Medicine and Primary Care; Brigham and Women's Hospital; Boston MA USA
| | - S. Vieths
- Division of Allergology; Paul-Ehrlich Institute; Langen Germany
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24
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Scientific Opinion on the evaluation of allergenic foods and food ingredients for labelling purposes. EFSA J 2014. [DOI: 10.2903/j.efsa.2014.3894] [Citation(s) in RCA: 72] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023] Open
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25
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Dang TD, Mills CEN, Allen KJ. Determination of the clinical egg allergy phenotypes using component-resolved diagnostics. Pediatr Allergy Immunol 2014; 25:639-43. [PMID: 25376255 DOI: 10.1111/pai.12301] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 11/03/2014] [Indexed: 11/27/2022]
Abstract
IgE-mediated egg allergy presents as one of the most common food allergies in children and is a food which is widely consumed all over the world. Measurement of egg white-specific IgE levels has been shown to be a poor predictor of clinical phenotypes of egg allergy, including to raw egg white, but particularly to baked or cooked egg. Egg white and yolk contain more than 20 different glycoproteins, including ovomucoid, ovalbumin, ovotransferrin, alpha-livetin, and the newly identified Gal d 6. Recent developments in component-resolved diagnostic technology, including microarrays, have enabled us to improve the way in which we diagnose food allergy. This technology allows us to measure specific IgE antibodies to individual egg allergens which have been highly purified. Characterization of the major egg allergens could help profile the relevant binding epitopes to each region and may also help diagnose the different clinical phenotypes of egg allergy.
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Affiliation(s)
- Thanh D Dang
- Centre of Food and Allergy Research, Murdoch Childrens Research Institute, Parkville, Vic., Australia; Department of Paediatrics, University of Melbourne, Parkville, Vic., Australia
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26
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Koeberl M, Clarke D, Lopata AL. Next generation of food allergen quantification using mass spectrometric systems. J Proteome Res 2014; 13:3499-509. [PMID: 24824675 DOI: 10.1021/pr500247r] [Citation(s) in RCA: 80] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
Food allergies are increasing worldwide and becoming a public health concern. Food legislation requires detailed declarations of potential allergens in food products and therefore an increased capability to analyze for the presence of food allergens. Currently, antibody-based methods are mainly utilized to quantify allergens; however, these methods have several disadvantages. Recently, mass spectrometry (MS) techniques have been developed and applied to food allergen analysis. At present, 46 allergens from 11 different food sources have been characterized using different MS approaches and some specific signature peptides have been published. However, quantification of allergens using MS is not routinely employed. This review compares the different aspects of food allergen quantification using advanced MS techniques including multiple reaction monitoring. The latter provides low limits of quantification for multiple allergens in simple or complex food matrices, while being robust and reproducible. This review provides an overview of current approaches to analyze food allergens, with specific focus on MS systems and applications.
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Affiliation(s)
- Martina Koeberl
- Molecular Immunology Group, Centre for Biodiscovery and Molecular Discovery of Therapeutics, School of Pharmacy and Molecular Sciences, James Cook University , James Cook Drive, Townsville, QLD 4811, Australia
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