Yes. Solid samples such as grain can be tested for phytic acid using Phytic Acid Assay Kit .
For solid samples, perform step 1 of the Sample Extraction using the following modification:
1. Accurately weigh approximately 1 g of sample material into a 75 mL glass beaker. Add 20 mL of hydrochloric acid (0.66 M) and homogenise the sample using a standard laboratory homogeniser or mortar and pestle, cover the beaker with foil and stir vigorously for a minimum of 3 hours at room temperature (preferably overnight for convenience). Follow the full Standard Assay Procedure as described in the K-PHYT data booklet from step 2 of the Sample Extraction procedure.
Alternatively mill cereal, plant or food product to pass a 0.5 mm screen, then follow the full Standard Assay Procedure as described in the K-PHYT data booklet from step 1 of the Sample Extraction procedure.
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