title: Gas-liquid chromatographic determination of tertiary-butylhydroquinone (TBHQ) in dried fish, frozen shrimp, vegetable oils, butter, and margarine.
abstract: Tertiary-butylhydroquinone (TBHQ) is extracted from foods with ethyl acetate, the solvent is evaporated, the residue is dissolved in n-hexane-ethyl acetate (99 + 1), and the TBHQ is selectively transferred into an aqueous layer (2% sodium chloride) as a separation from food interferences. Finally, TBHQ is reextracted with n-hexane-ethyl acetate (1 + 1), concentrated, and determined by flame ionization gas-liquid chrmoatography. Dried fish, frozen shrimp, vegetable oils, and edible fats were analyzed by the method. More than 85% was recovered when the samples were fortified with 100 ppm TBHQ. Detection limit was 1.0 ppm TBHQ.
mesh_terms: D000818:Animals; D000975:Antioxidants / Q000032:analysis*; D002417:Cattle; D002849:Chromatography, Gas; D033364:Decapoda / Q000032:analysis; D004041:Dietary Fats / Q000032:analysis*; D005399:Fishes; D006873:Hydroquinones / Q000032:analysis*; D008460:Meat / Q000032:analysis*; D009821:Oils / Q000032:analysis
chemical_list: D000975:Antioxidants; D004041:Dietary Fats; D006873:Hydroquinones; D009821:Oils; C018855:2-tert-butylhydroquinone