[Determination of benzoic acid and its salts in food products of animal origin].

A modification of the method for determining benzoic acid and its salts by water-vapour distillation and extraction of the biological material conservant and its titrimetrical determination is proposed. The thin layer chromatography method (TLC) is used parallelly for the identification of the conservant. The advantage of the proposed method consists in that the same distiller is used for quantitative titrimetrical determination and for TLC assessment. The method possesses high sensitivity 1 gamma in TLC scoring and 0.1 mg in titrimetric determination. It is applied for the determination of conservants in various fish assortments, canned fish and roe.