Anion-exchange method for determination of phytate in foods: collaborative study.
Phytate, a naturally occurring organic compound found in plant seeds, roots, and tubers, was determined in a collaborative study using a modified anion-exchange method. Seven samples (peanut flour, oats, rice, isolated soybean protein, a vegetarian diet composite, wheat bran, and whole wheat bread), supplied as blind duplicate samples, were analyzed in triplicate by 7 collaborators. Phytate concentrations in the samples ranged from 2.38 to 46.70 mg/g. Relative standard deviations (RSD = CV) for repeatability ranged from 2.5 to 10.1%, and for reproducibility, from 4.5 to 11.0%. The method has been adopted official first action.
D000838:Anions; D002852:Chromatography, Ion Exchange; D004032:Diet; D014676:Diet, Vegetarian; D002523:Edible Grain / Q000032:analysis; D005504:Food Analysis; D010833:Phytic Acid / Q000032:analysis*
D000838:Anions; D010833:Phytic Acid