Decomposition of Dehydro-l-ascorbic Acid and Dehydro-erythorbic Acid
نویسندگان
چکیده
منابع مشابه
Metabolism of l-ascorbic acid, dehydro-l'ascorbic acid, and diketo-l-gulonic acid in the guinea pig.
The interrelationships of L-ascorbic acid (AsA) and dehydro-L-ascorbic acid (DHA) have been investigated both in viva and in vitro by numerous workers, with especial emphasis upon the conversion of DHA to AsA by the animal body (l-8). The conversion of DHA to diketo-L-gulonic acid (DKA) in vitro has been shown by Herbert and coworkers (3), by Borsook (l), and by Penney and Zilva (6), and this c...
متن کاملPossible Formation of Dehydro-L-ascorbic Acid from 2,3-Diketo-L-gulonic Acid in an Aqueous Solution.
The reaction of 2,3-diketo-L-gulonic acid (DKG), which is one of the important intermediate products in the degradation of L-ascorbic acid (ASA) in both food and biological systems, in an aqueous solution was studied. The formation of a small amount of the γ-lactone, dehydro-L-ascorbic acid (DASA), from DKG was observed. This strongly suggests the chemical possibility of a reverse reaction in D...
متن کاملA note on the estimation of dehydro-L-ascorbic acid in plant tissues by the Roe & Kuether procedure.
Dehydro-L-ascorbic acid is usually found in plant tissues in low concentrations and is always associated with ascorbic acid in much higher concentrations. One of the most reliable and direct methods for its estimation is that originally proposed by Roe & Kuether (1943) which is based on the formation of a 2:4-dinitrophenylosazone. Many plant tissues, however, contain so little dehydro-L-ascorbi...
متن کاملEffects of active oxygen scavengers on the peroxidation of linoleic acid catalyzed by dehydro-L-ascorbic acid or its degradation products.
The addition of 1,4-diazabicyclo-[2,2,2]octane (DABCO) (100 mM) or 1,2-dihydroxybenzene-3,5-disulfonic acid (Tiron) (1 mM) to a reaction mixture containing 10 mM linoleic acid (LA), 20% EtOH, and 135 microM dehydroascorbic acid (DHA) as a catalyst suppressed LA peroxidation, but the addition of mannitol (approximately 100 mM), uric acid (100 microM), and catalase (6.5 units) did not. DHA or 2,3...
متن کاملA rapid, simple method for the determination of reduced, dehydro-, and total ascorbic acid in biological material.
Chemical methods for the determination of reduced ascorbic acid (Zascorbic acid) are based upon its reducing properties. The indophenol method of Bessey (1, 2) and the perinaphthindantrione hydrate method of Moubasher (3) are examples of these methods. Modifications to increase the specificity of the indophenol method have been presented by Robinson and Stotz (4), Lowry, Lopez, and Bessey (5), ...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: NIPPON SHOKUHIN KOGYO GAKKAISHI
سال: 1968
ISSN: 0029-0394
DOI: 10.3136/nskkk1962.15.533