[Quantitative determination of supplemental vitamin C in mineral salt mixtures (author's transl)].
Supplemental vitamin C in mineral salt mixtures is extracted without destruction by diluted ethanol under the reducing and stabilizing protection of 2,3-dimercaptopropanol-(1) (BAL). After removal of heavy metal ions in form of mercaptides and by means of cation exchange BAL is extracted and vitamin C (ascorbic plus dehydroascorbic acid) titrated with dichlorophenolindophenol. Recovery 98-100%.
D001205:Ascorbic Acid / Q000032:analysis*; D004112:Dimercaprol / Q000302:isolation & purification; D005503:Food Additives / Q000032:analysis*; D007474:Ion Exchange; D008903:Minerals
D005503:Food Additives; D008903:Minerals; D004112:Dimercaprol; D001205:Ascorbic Acid
Quantitative Bestimmung von zugesetztem Vitamin C in Mineralsalzmischungen