# Potential Transfer of Toxic Gluten from Biodegradable Tableware to Gluten-Free Foods: Implications for Individuals with Gluten-Related Disorders

## TL;DR

Biodegradable tableware made from wheat can transfer gluten to gluten-free foods, risking people with gluten-related disorders.

## Contribution

This study identifies gluten transfer from biodegradable tableware to gluten-free foods, revealing a regulatory gap.

## Key findings

- Gluten transfer occurred from a wheat-derived dish to both solid and liquid gluten-free foods.
- Gluten migration was higher in liquid and emulsified foods, exceeding the 20 mg/kg gluten-free threshold in some cases.
- Heat and prolonged exposure increased gluten transfer, indicating a risk for vulnerable consumers.

## Abstract

The increasing use of biodegradable food-contact materials
poses
a risk for individuals with gluten-related disorders, including celiac
disease. Tableware manufactured from wheat or other cereal derivatives
may retain gluten proteins; regulations do not mandate allergen labeling.
This study evaluated gluten transfer from eight commercial biodegradable
items to representative gluten-free foods under realistic conditions.
Gluten was quantified in biodegradable tableware and food samples
after contact, using monoclonal antibody-based assays (G12 and A1)
which detect gluten immunogenic peptides (GIP), providing a sensitive
measure of potential immunological risk. Only one wheat-derived dish
contained gluten and transferred it into solid and liquid foods. Migration
was greater in liquid foods, particularly emulsified systems. In several
cases transferred gluten exceeded the 20 mg/kg threshold for gluten-free
labeling. Heat and prolonged exposure increased transfer. These findings
highlight a critical regulatory gap, underscoring the urgent need
for mandatory allergen labeling on biodegradable tableware to protect
vulnerable consumers.