Abstract
A colorimetric method for the quantitative determination of the aldehyde content of cold-pressed orange and grapefruit oils is described. The method employs N-hydroxybenzenesulfonamide and may be conducted in conjunction with the analyses of citrus essences and juices for total aldehyde content, since the same standards and reagents are used. Data for reproducibility, standard curves, and sample analyses are given and discussed. Equations are given for conversion of results to per cent decanal.