The standard Hygiene Test Method employs both dialysis extraction for saccharin in foods, and steam distillation for sorbic acid and benzoic acid. Therefore, the extraction process and assay conditions are different for each target component, making it more complex to perform the analytical procedure.
In this application note, we introduce an analytical method combining dialysis extraction, which provides easier extraction of a variety of sample types, with solid-phase extraction, which offers a much simpler purification procedure.