Конекст для ingestion:
Здесь ingestion, означает, наверное "употребление" или "поглощение"
In celiac disease patients, "ingestion" of a prolamin often induces severe intestinal symptoms and inflicts small-bowel mucosal damage because the patients lack an oral tolerance to wheat gluten and/or to related prolamins

To achieve “gluten-free” status, gluten in foods can be detoxified after "ingestion" in the gastrointestinal tract, or it may be hydrolyzed prior to ingestion during food processing.

Спасибо!