Aluminum food lakes are oil dispersible colorants manufactured by combining food dyes with alumina. Alumina absorbs the water-soluble colors and acts as a carrier vehicle for the dye. Aluminum consumption is a potential food safety concern. For example, the European Food Safety Authority (EFSA), in its opinion of 22 May 2008 (2) recommended lowering the tolerable weekly intake (TWI) for aluminum to 1 mg/kg body weight/week. Therefore quantification of aluminum in food dyes provides a way to monitor the potential for human intake. This note describes the measurement of Aluminum in food lakes by XRF using the fused bead method.
Please login or register to read more.