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Rice bran was found to adsorb Fe 3+ effectively over the range of pH 1-12. Therefore rice bran is applicable for uses in the food industry over a wide pH range. Fe 3+ was successfully removed from water samples with an average removal efficiency of 88.5% after 90 min when rice bran was added to water samples containing 5 mg/l Fe 3+ . The removal of Fe 3+ by rice bran was attributed to the chelating properties of phytic acid. Here, we report a fundamental study on the efficiency of rice bran fordoi:10.1248/jhs.52.455 fatcat:oysxwof6tfa43bhhlpyuyygp74