Scott W. Radcliffe and Lukas Frank
Romer Labs, Inc., 130 Sandy Dr, Newark, DE 19713
Objective • Determine whether a selection of popular spices may cross-react with AgraStrip Allergen assays
Results
Conclusions
Table 1. AgraStrip Allergen cross-reactivity and interference test results for various spice matrices. AgraStrip® Assay
• Verify that selected spices will not interfere with detection of a low level allergen spike
Spike
Unspiked Almond
Methods • Test cumin, turmeric, curry powder, paprika and chili powder using AgraStrip Almond, Cashew/Pistachio, Egg, Gluten G12, Peanut, Soy and Total Milk
5 ppm Almond
Unspiked Cashew/Pistachio 10 ppm Pistachio
• Verify pH of spice extracts in 6.0 – 8.0 range prior to assay, and adjust if necessary • Spike spices with almond, pistachio, egg, wheat, peanut, soy or milk at levels close to AgraStrip LOD and retest Correspondence should be addressed to: Scott Radcliffe Romer Labs 130 Sandy Dr, Newark, DE 19713
[email protected] www.romerlabs.com
Unspiked Egg 5 ppm Egg
Unspiked Gluten G12 10 ppm Gluten
Spice
Result
Cumin Turmeric Curry Powder Paprika* Chili Powder* Cumin + Turmeric + Curry Powder + Paprika* + Chili Powder* + Cumin Turmeric Curry Powder Paprika* Chili Powder* Cumin + Turmeric + Curry Powder + Paprika* + Chili Powder* + Cumin Turmeric Curry Powder Paprika* Chili Powder* Cumin + Turmeric + Curry Powder + weak line Paprika* Chili Powder* + Cumin Turmeric Curry Powder Paprika* Chili Powder* Cumin + Turmeric + Curry Powder + Paprika* + Chili Powder* +
AgraStrip® Assay
Peanut
Soy
Total Milk
Spike
Spice
Result
Cumin Turmeric Unspiked Curry Powder Paprika* Chili Powder* Cumin + Turmeric + 5 ppm Curry Powder + Peanut weak line Paprika* Chili Powder* + Cumin Turmeric Unspiked Curry Powder Paprika* Chili Powder* Cumin + Turmeric + 5 ppm Curry Powder + Soy Paprika* + Chili Powder* + Cumin Turmeric Unspiked Curry Powder Paprika Chili Powder Cumin + Turmeric + 5 ppm Curry Powder + Milk weak line Paprika* Chili Powder* +
*Extracts from paprika and chili powder were found to have pH