Influence of dietary intakes of erythorbic acid on plasma vitamin C analyses.
Am J Clin Nutr
; 54(6 Suppl): 1319S-1322S, 1991 12.
Article
em En
| MEDLINE
| ID: mdl-1962590
D-Erythorbic acid is an epimer of L-ascorbic acid, but lacks antiscorbutic activity. It is commonly used as a food additive, particularly in processed meat items. Except for high-performance liquid chromatography (HPLC) methodology, the commonly used analytical procedures to measure vitamin C do not distinguish between the two isomers. A study with seven adult women demonstrated that the concentration of erythorbic acid present in food items commonly consumed was sufficient to produce interference in plasma vitamin C analyses. With the meals used, 7-23% of the apparent vitamin C in plasma obtained 2 h after the ingestion of the meals was actually erythorbic acid when analyzed by HPLC. To avoid falsely high plasma-serum vitamin C values as a result of erythorbic acid ingestion, the analyses should be conducted on overnight fasting blood specimens or with the use of an HPLC-amperometric method.
Texto completo:
1
Base de dados:
MEDLINE
Assunto principal:
Ácido Ascórbico
/
Dieta
Limite:
Adult
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Female
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Humans
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Middle aged
Idioma:
En
Ano de publicação:
1991
Tipo de documento:
Article