A stepwise, ‘test-all-positives’ methodology to assess gluten-kernel contamination at the serving-size level in gluten-free (GF) oat production
2018
Abstract A step-wise, ‘test-all-positive-gluten’ analytical methodology has been developed and verified to assess kernel-based gluten contamination (i.e., wheat, barley and rye kernels) during gluten-free (GF) oat production. It targets GF claim compliance at the serving-size level (of a pouch or approximately 40–50 g). Oat groats are collected from GF oat production following a robust attribute-based sampling plan then split into 75-g subsamples, and ground. R-Biopharm R5 sandwich ELISA R7001 is used for analysis of all the first15-g portions of the ground sample. A >20-ppm result disqualifies the production lot, while a >5 to
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