title: Amino acid analysis using phenylisothiocyanate prederivatization: elimination of the drying steps.
abstract: Results of experiments on the procedure for amino acid analysis via analysis of the phenylthiocarbamyl amino acids are reported. It was found that yields of some amino acids varied in the presence of salt and with changes in the vacuum drying steps. An improved procedure is described which includes a standard addition of salt to the hydrolysate before drying it; the redrying step is omitted and the post derivatization drying is replaced by a simple addition of heptane to the reaction mixture.
authors: CSIRO Division of Protein Chemistry, Parkville, Victoria, Australia.
authors: A S
authors: AS
authors: Inglis
authors: N A
authors: NA
authors: Bartone
authors: J R
authors: JR
authors: Finlayson
mesh_terms: D000596:Amino Acids / Q000032:analysis*; D002851:Chromatography, High Pressure Liquid; D006868:Hydrolysis; D017879:Isothiocyanates; D012965:Sodium Chloride; D013861:Thiocyanates; D014618:Vacuum
chemical_list: D000596:Amino Acids; D017879:Isothiocyanates; D013861:Thiocyanates; C005441:phenylisothiocyanate; D012965:Sodium Chloride