Peanut cross-contamination in randomly selected baked goods

Area of Science:

• Food science
• Allergy research
• Analytical chemistry

Background:

• Peanut allergy management relies on avoidance and epinephrine, but accidental ingestion is common.
• Cross-contamination of peanut protein in foods, including baked goods, remains a significant risk despite precautions.

Purpose of the Study:

• To quantify peanut protein contamination in baked goods from various bakeries.
• To assess the variability of peanut contamination between batches.

Main Methods:

• Baked goods samples were collected from 18 bakeries in New York and Miami.
• Peanut protein levels were analyzed using enzyme-linked immunosorbent assay (ELISA).
• Consumption data from the National Health and Nutrition Examination Survey (NHANES) were used for risk assessment.

Main Results:

• Peanut contamination was detected in 4 out of 154 (2.6%) baked goods samples.
• Peanut protein levels varied widely, from 0.1 mg/100 g to 650 mg/100 g.
• Estimated single-ingestion exposure ranged from 0.07 mg to 832 mg of peanut protein.

Conclusions:

• A small but significant proportion of baked goods contained unintended peanut protein.
• Some contaminated products had high levels of peanut protein, posing a risk for allergic individuals.
• The study highlights the potential for accidental peanut exposure through contaminated baked goods.