dehydroascorbic acid


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dehydroascorbic acid

[dē¦hī·drō·ə¦skȯr·bik ′as·əd]
(organic chemistry)
C6H6O6 A relatively inactive acid resulting from elimination of two hydrogen atoms from ascorbic acid when the latter is oxidized by air or other agents; has potential ascorbic acid activity.
References in periodicals archive ?
24) For completeness, it should be mentioned that a 1991 publication claimed that the previous report by the same authors of growth inhibition and death of ascites tumor cells by cobalamin and ascorbic acid was due in fact to dehydroascorbic acid, not ascorbic acid.
Until recently the mechanism of action was uncertain, although there is quite recent in vitro evidence (2008) that confirms the direct anti-viral activity of both ascorbic acid and dehydroascorbic acid (ascorbic acid in its reduced form) in defined conditions (10).
In our experiments, we show that the vitamin C can also be absorbed in larger quantities in the form of dehydroascorbic acid from juice that has been kept overnight in a refrigerator, for example," added Mani.
Vitamin C level was estimated by the method of Omaye et al, (1979) and the dehydroascorbic acid formed by the oxidation of ascorbic acid by copper on treatment with 2,4 dinitro phenyl hydrazene, was measured at 525nm.
1953), The determination of ascorbic acid in whole blood and urine through 2,4-dinitrohenyl hydrazine derivatives of dehydroascorbic acid, J.
Rat tail tendons were incubated with ASA and dehydroascorbic acid (DHA) under physiological conditions of temperature and pH, and the crosslinking and the level of AGEs were analyzed.
The L-ascorbic acid reduces the 2, 6-dichlorophenol indophenol (a blue coloured dye) to a colourless leuco-base The ascorbic acid is oxidised to dehydroascorbic acid.
An electrospray ionization ion trap mass spectrometric (ESI-MS-MS) study of dehydroascorbic acid hydrolysis at neutral pH.
Ascorbic acid and its oxidized form, dehydroascorbic acid (DHA), both can be transported into and out of cells (Figure 3).
After vitamin C neutralizes ROIs, the vitamin C itself becomes oxidized into dehydroascorbic acid (DHA).
of Health for the development of dehydroascorbic acid as a therapy for
Vitamin C can't pass through the so-called blood-brain barrier to gain entry into the brain, but its precursor, dehydroascorbic acid (DHA), can.