title: Spectrophotometric determination of certain volatile oils. Part 1: Assay for phenols in volatile oils of clove and thyme.
abstract: A differential spectrophotometric method was described for the assay of thyme and clove oils. The method is based on the relative absorbance measurement of the thymate or eugenate anions to the respective molecular thymol or eugenol in alcoholic medium. The results of the differential method, compared with those of the conventional method, are more accurate.
mesh_terms: D003212:Condiments; D005054:Eugenol / Q000032:analysis; D019684:Magnoliopsida; D008722:Methods; D009821:Oils / Q000032:analysis*; D010636:Phenols / Q000032:analysis*; D013056:Spectrophotometry, Ultraviolet; D013943:Thymol / Q000032:analysis
chemical_list: D009821:Oils; D010636:Phenols; D013943:Thymol; D005054:Eugenol