Studies on the Reduction of Uronic Acid Groups in Alginic Acid.
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چکیده
منابع مشابه
Proximate analysis of different groups of irradiated alginic acid
Background: Seaweeds contain significant quantities of lipids, protein, vitamins and minerals. Aquavac Ergosan contains 1% alginic acid extracted from two brown seaweeds, Laminaria digitata and Ascophyllum nodosum. Both in vivo and in-vitro researches have mainly been focused on the effect of Ergosan on fish growth, survival rate, reproductive performance and innate immunity in blood and epider...
متن کاملProximate analysis of different groups of irradiated alginic acid
Background: Seaweeds contain significant quantities of lipids, protein, vitamins and minerals. Aquavac Ergosan contains 1% alginic acid extracted from two brown seaweeds, Laminaria digitata and Ascophyllum nodosum. Both in vivo and in-vitro researches have mainly been focused on the effect of Ergosan on fish growth, survival rate, reproductive performance and innate immunity in blood and epider...
متن کاملAlginic acid metabolism in bacteria. II. The enzymatic reduction of 4-deoxy-L-erythro-5-hexoseulose uronic acid to 2-keto-3-deoxy-D-gluconic acid.
Alginase, partially purified from cell-free extracts of an Enzyme Purifiation adapted Pseudomonas, has been shown to metabolize alginic All operations were carried out in a cold room at O-3”. The acid with the resultant accumulation of the monosaccharide, preparation of the crude extract of alginic acid-grown Pseudo4-deoxy-r,-erythro-5-hexoseulose uranic acid (ketodeoxygluconalmmae has been des...
متن کاملReduction of hypervalent chromium in acidic media by alginic acid.
Selective oxidation of carboxylate groups present in alginic acid by Cr(VI) affords CO2, oxidized alginic acid, and Cr(III) as final products. The redox reaction afforded first-order kinetics in [alginic acid], [Cr(VI)], and [H(+)], at fixed ionic strength and temperature. Kinetic studies showed that the redox reaction proceeds through a mechanism which combines Cr(VI)→Cr(IV)→Cr(II) and Cr(VI)→...
متن کاملAlginic Acid Metabolism in Bacteria I. ENZYMATIC FORMATION OF UNSATURATED OLIGOSACCHARIDES AKD 4-DEOXY-L-ERYTHRO-5-HEXOSEULOSE URONIC ACID
Alginic acid, a high molecular weight linear polymer obtained from seaweed, is widely used as an added product to food due to its property of forming highly viscous solutions. Originally described as a polymer of n-mannuronic acid, it has now been demonstrated, by the chemical studies of Fischer and DGrfel (l), to be a ,&l-4-linked polymer of n-mannuronic and L-guluronic acid. The ratio of the ...
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ژورنال
عنوان ژورنال: Acta Chemica Scandinavica
سال: 1984
ISSN: 0904-213X
DOI: 10.3891/acta.chem.scand.38b-0015