Capillary electrophoresis with capacitively coupled contactless conductivity detection for the determination of propionate and sorbate in bread.

We propose a simple and fast method for the determination of the preservatives propionate and sorbate in bread using capillary electrophoresis with capacitively coupled contactless conductivity detection. The preservatives were quickly extracted from bread using ultra-pure water and ultrasonic energy. The separation of the analytes, with good resolution, was achieved in about 7 min.