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New studies, systematic reviews, research summaries and participant calls.
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A 2025 laboratory study tested eight biodegradable food-contact items and found substantial gluten in one wheat-derived dish, with transfer into several gluten-free foods under the tested conditions. The result identifies a food-contact question worth checking, but it does not show that biodegradable tableware as a category is unsafe.
A 2026 Winnipeg study shows why a reported gluten-free menu and a reported cross-contact control answer different questions. This evidence update explains what the study measured, what it did not verify, and what diners and food-service teams can ask or document.
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