The mechanism of ascorbic acid (DH 2) oxidation with molecular oxygen catalysed by the polynuclear complex of Cu 2+ with poly-4-vinylpyridine (PVP), partially quaternized by dimethylsulphate, has been studied. The half-conversion time of the reaction of DH 2 with Cu(II) PVP under anaerobic ...
Covalent modification of glassy carbon electrode with glutamic acid for simultaneous determination of uric acid and ascorbic acid A novel covalently modified glassy carbon electrode with glutamic acid has been fabricated via an electrochemical oxidation procedure and was applied to th... Z Lei,XQ Lin ...
Kinetics and mechanism of the oxidation of L-ascorbic acid by the N,N′-ethylenebis(salicylideneiminato)manganese(III) complex in aqueous solution The kinetics of oxidation of l-ascorbic acid by the N,N-ethylenebis(salicylideneiminato) manganese(III) complex have been studied over the 4.5–9....
Supplementation with a low dose of ascorbic acid (25 mg/kg body weight/day) for the same period led to a mean hearing loss of 41,6 dB dB (Fig. 3). Thus, ascorbic acid supplemenation reduced the noise-induced NO-production. Similar observations about a protective mechanism of ascorbic ...
The measurement of the oxidation-reduction potential of ascorbic acid (Vitamin C) is desirable in the elucidation of its physiological action. Two attempts have been made to measure this potential. Georgescu(1) concluded that he had obtained a thermodynamically reversible potential at pH 6.9, and ...
The biologically relevant oxidation of l-ascorbic acid (AH2) was studied at an externally polarised 1,2-dichloroethane ∣ water interface by a combination of electrochemical and spectroscopic techniques. In the presence of an electron acceptor (chloranil) in 1,2-dichloroethane, the basi...
oxidation, dehydrogenation, ozonolysisNo abstract is available for this article.doi:10.1002/chin.197701142E. V. SHTAMMA. P. PURMALYU. I. SKURLATOVWILEY‐VCH Verlag GmbHChemischer InformationsdienstShtamm, E.V.; Purmalis, A. and Skurlatov, Yu. I. (1976). Oxidation of ascorbic acid by ...
Oxidation reduction potential of ascorbic acid. 来自 CAB Direct 喜欢 0 阅读量: 41 作者: K Laki 摘要: The author disagrees with Georgescu that ascorbic acid is capable of forming a thermodynamically reversible oxidation reduction system. The biological significance of this inability is discussed. ...
Oxidation Products of Uric Acid and Ascorbic Acid in Preterm Infants with Chronic Lung Disease Dehydroascorbic acid, an oxidation product of ascorbic acid (vitamin C), spontaneously decomposed at neutral and higher pH levels to form three products th... Tohru,Ogihara,Han-Suk,... - 《Neonatology...
Oxidation-Reduction Potential of Ascorbic Acid (Vitamin C). The measurement of the oxidation-reduction potential of ascorbic acid (Vitamin C) is desirable in the elucidation of its physiological action. Two attempts... H Borsook,G Keighley - 《Proceedings of the National Academy of Sciences of ...