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Comparison of Tobacco Host Cell Protein Removal Methods by Blanching Intact Plants or by Heat Treatment of Extracts

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Effect of thermal processing on mealworm allergenicity.

Henrike Broekman¹, André Knulst¹, Stans den Hartog Jager¹

¹Department of Dermatology/Allergology, University Medical Centre Utrecht (UMCU), Utrecht, The Netherlands.

Molecular Nutrition & Food Research

|June 23, 2015

Summary

Thermal processing of mealworms did not reduce their allergenicity but altered protein solubility. This study assessed insect allergens for food security applications, finding changes in solubility rather than reduced allergic potential.

Keywords:

Food allergy Mealworm Sequential extraction method Solubility thermal processing

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Area of Science:

Food Science
Allergology
Entomology

Background:

Sustainable protein sources are crucial for global food security.
Insects, like mealworms, are explored as viable protein alternatives.
Assessing allergy risks associated with insect consumption is essential for safety.

Purpose of the Study:

To evaluate the impact of thermal processing on mealworm allergenicity.
To investigate changes in allergen solubility after heat treatment.
To assess the safety of mealworms as a food source, particularly for individuals with existing allergies.

Main Methods:

Mealworm samples were subjected to thermal processing.
Sequential extraction using Tris, urea, and SDS/DTT buffers was employed.
Allergenicity was assessed using immunoblot, basophil activation tests, and skin prick tests in shrimp-allergic patients.

Main Results:

Thermal processing altered the solubility of mealworm allergens.
Immunoblots indicated changes in IgE binding due to solubility shifts, not reduced allergenicity.
Skin prick tests showed similar reactions between processed and unprocessed mealworm extracts.

Conclusions:

Thermal processing does not decrease mealworm allergenicity.
Solubility of mealworm allergens is significantly affected by heat treatment.
Sequential extraction methods are effective for comprehensive allergen analysis.