Abstract
A rapid method for the analysis of the artificial sweetener aspartame in food products using high-performance capillary electrophoresis with a bare capillary, a pH 2.14 buffer and detection at 211 nm has been developed. The analysis time is faster than that reported for HPLC methods. A linear calibration curve between 25 and 150 μg/ml for the analyte solution is established which can be used for quantitative determinations of aspartame in typical food and beverage products. Six commercial samples are analyzed and one diet cola with a known aspartame concentration gives an R.S.D. of 2.6% from the manufacturer's value. No other sample constituents are detected in this high-performance capillary electrophoresis (HPCE) method.
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