Food Allergen ELISA Microplate System

What is the Food Allergen ELISA Microplate System?

A food allergen ELISA microplate system quantifies specific allergenic proteins in ingredients, finished products and cleaning swabs using antibody-based colorimetric assays. It provides the sensitive, quantitative verification needed for allergen labelling and cleaning validation.

Overview

The assay uses a sandwich format in which capture antibodies bound to a microplate well bind the target allergen, and a second enzyme-labelled antibody produces a colour proportional to concentration after substrate addition. Absorbance is read at 450 nm with a reference wavelength, and concentrations are interpolated from a calibration curve. Kits are available for gluten, milk, egg, soy, peanut, hazelnut, almond, sesame, shellfish, mustard, celery and lupin, with detection limits commonly between 1 and 10 mg/kg. Sample preparation involves extraction in a supplied buffer, centrifugation and dilution, and results are reported in mg/kg of food. The method is suitable for screening and cleaning verification, with confirmation by a second technique for label decisions.

How does it work?

Food safety analysis separates the analyte from the food matrix and then quantifies it with a detector matched to its chemistry. High-performance liquid chromatography suits non-volatile additives, sweeteners and preservatives, with UV or diode-array detection and confirmation by mass spectrometry. LC-MS/MS gives the sensitivity and selectivity needed for pesticide residues at microgram per kilogram levels. Gas chromatography with mass detection covers volatile compounds such as solvents, flavours and some pesticide classes. Immunoassays rely on antibodies that bind allergens or toxins, producing a colorimetric signal proportional to concentration. PCR amplifies species-specific DNA sequences to identify allergens or adulterants. Rapid screening kits are confirmed by instrumental methods when a result is positive or disputed.

What are the key features?

• Quantitative sandwich ELISA with 96-well microplate format
• Kit panels for gluten, milk, egg, soy, peanut and tree nuts
• Detection limits typically 1–10 mg/kg of food
• Single extraction protocol across the allergen panel
• Microplate reader compatibility at 450 nm
• Cleaning-swab protocols for production-line verification

What are the technical specifications?

A typical food allergen elisa microplate system configuration offers assay format of Sandwich ELISA, 96-well, detection wavelength of 450 nm with 620 nm reference, detection limits of 1–10 mg/kg per allergen, quantification range of 2–40 mg/kg (typical), extraction time of 15–30 min and total assay time of 60–120 min. Values are indicative of the product class; the exact figures for each configuration are confirmed on the quotation and the calibration documents supplied with the instrument.

Which applications is it used for?

The Food Allergen ELISA Microplate System is used in allergen labelling verification, cleaning validation for shared production lines, incoming ingredient screening and investigation of consumer allergen complaints. Across the wider Food Safety Analysis class, laboratories also deploy it for pesticide residue monitoring in fruit and vegetables, additive and preservative limit checks and allergen verification and cleaning validation.

Which standards and certifications apply?

Relevant standards and methods include ISO/IEC 17025, AOAC Official Methods of Analysis, EN 15633-1, EN 15634-1, Regulation (EC) No 396/2005, SANTE/11312/2021 and Codex Alimentarius. Certification candidates for this model are CE, ISO 9001 manufacturing and AOAC performance-tested kit; each is to be confirmed for the specific configuration before shipment, and certificates are supplied only where they have been issued.

Food matrices vary widely, so method validation must cover each commodity group, including fatty, acidic and high-pigment samples that cause ion suppression or interference. Standard solutions, antibodies and enzyme kits have limited shelf life and need controlled storage. Laboratories should participate in proficiency testing and keep traceable records of calibrations, control charts and confirmatory analysis. Allergen testing demands strict cleaning and segregation to avoid cross-contamination between samples. Confirm that your chosen platform has local service, spare parts and consumables, and that software meets data-integrity requirements when results support regulatory decisions.

How do I select the right Food Allergen ELISA Microplate System?

Select an ELISA allergen system when you need quantitative screening and cleaning verification for a defined allergen panel. Confirm that validated kits exist for each allergen and matrix you test, since cross-reactivity and recovery vary. Compare detection limits with the labelling thresholds that apply, and specify reader compatibility and software for control charts.

How does it compare with other Food Safety Analysis variants?

Match the detection technology to the analyte and to the limit you must reach. HPLC with UV or diode-array detection is sufficient and economical for many additives and preservatives at milligram per kilogram levels. Pesticide residue work at microgram per kilogram levels requires LC-MS/MS or GC-MS/MS, and multi-residue methods should cover the classes in your monitoring plan. Choose ELISA or lateral-flow kits when speed, low cost and on-site use matter, accepting them as screening tests. Real-time PCR is required for species identification and authenticity claims. Confirm the availability of certified reference standards, matrix-matched calibration and validated methods for your specific commodities.