Ascorbic Acid Measurement, Polarographic Determination of Total Ascorbic Acid in Foods

1963 ◽  
Vol 11 (1) ◽  
pp. 22-26 ◽  
Author(s):  
Harry Lento ◽  
Chester Daugherty ◽  
Arnold Denton
Keyword(s):  
Ascorbic Acid ◽  
Polarographic Determination

scholarly journals Single sweep polarographic determination of trace nitrite in ferrous and ascorbic acid medium.

1990 ◽  
Vol 6 (2) ◽  
pp. 251-255 ◽  
Author(s):  
Jianwei Mo ◽  
Duan JIN ◽  
Jianhong PEI ◽  
Zaofan ZHAO
Keyword(s):  
Ascorbic Acid ◽  
Acid Medium ◽  
Polarographic Determination

Polarographic determination of vitamin C after derivatization with o-phenylenediamine

2010 ◽  
Vol 75 (7) ◽  
pp. 731-741 ◽  
Author(s):  
José António Rodrigues ◽  
Inês Maria Valente ◽  
Luís Moreira Gonçalves ◽  
João Grosso Pacheco ◽  
Aquiles Araújo Barros
Keyword(s):  
Ascorbic Acid ◽  
Vitamin C ◽  
Hydrolytic Degradation ◽  
Dehydroascorbic Acid ◽  
Differential Pulse ◽  
Fruit Juices ◽  
Polarographic Determination ◽  
Initial Oxidation ◽  
The Common

A differential pulse polarographic (DPP) method has been developed for the determination of ascorbic acid (AA) and dehydroascorbic acid (DHA), the two main forms of Vitamin C. The method consists of the DPP analysis of a quinoxaline obtained by the derivatization of DHA with o-phenylenediamine. Results using the proposed method correlated well with those obtained by two reference methodologies: the common iodometric method and a published chromatographic methodology. It was also used in the study of Vitamin C degradation in fruit juices, showing that it involves an initial oxidation of AA to DHA, followed by hydrolytic degradation of the latter.

Fluorometric determination of ascorbic acid in the absence of the oxidant in juices of common citrus

Planta Medica ◽  
2010 ◽  
Vol 76 (12) ◽  
Author(s):  
A Copra-Janicijevic ◽  
E Sofic ◽  
L Klepo ◽  
A Topcagic ◽  
I Tahirovic ◽  
...  
Keyword(s):  
Ascorbic Acid ◽  
Fluorometric Determination
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