Lentils and Gluten Cross Contact.

Area of Science:

• Food science
• Dietary research
• Celiac disease management

Background:

• Lentils are naturally gluten-free and suitable for individuals with celiac disease.
• Lentils, similar to oats, face a significant risk of gluten cross-contact from other grains.
• Contamination can compromise the safety of gluten-free products.

Purpose of the Study:

• To investigate the prevalence of gluten-containing grains in commercially available lentils.
• To assess the risk of cross-contact in dry lentil products.
• To inform consumers about potential gluten contamination in lentils.

Main Methods:

• Twenty-five bags of dry lentils from 24 different brands were purchased in 2021.
• Products were sourced from online retailers and physical grocery stores.
• Each lentil bag was meticulously hand-sorted to identify any errant grains.

Main Results:

• Two out of 25 lentil packages (8%) contained gluten-containing grains.
• One package had a single wheat grain; another contained both wheat and barley.
• The presence of even one grain in a 16-ounce bag could exceed the U.S. gluten-free limit of 20 parts per million.

Conclusions:

• Dry lentils are susceptible to cross-contact with gluten-containing grains.
• Consumers with celiac disease must continue to manually sort lentils and rinse them before preparation.
• Enhanced vigilance is necessary to ensure the safety of lentils for a gluten-free diet.