1938
DOI: 10.1002/hlca.193802101133
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Remarques sur le travail de H. Mohler et H. Lohr: Spectres des systèmes R1‐R1. Spectres des acides l‐ascorbique, oxytétronique, réductinique et α‐crotonique

Abstract: l-Desoxy-2,6-monoaceton-d-fructo-methylose ( V I I I ) . 1,0 g der 1-Jod-l-desoxy-2,3-monoaceton-d-fructo-methylose (VII) wurden in 20 em3 Methanol gelost, mit 1 g Raney-Nickel und 4 cm3 einer 5-proz. Losung von Natriumhydroxyd in Methanol versetzt und in Wasserstoffatmosphare geschuttelt. Nach 1 Stunde waren 95 em3 aufgenommen und die Hydrierung stand still. Zur Aufarbeitung wurde filtriert, mit etwas Methanol nachgewaschen und die Losung mit Kohlendioxyd gesiittigt und zur Trockne eingedampft. Der Ruckstand … Show more

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“…So that the L-gulonolactone oxidase reaction in the initial period could be followed, the formation of L-ascorbic acid was determined spectrophotometrically by using a Union Giken stopped-flow spectrophotometer (Union Giken, Osaka, Japan). The rate of the reaction was calculated by using a molar extinction coefficient of 15 300 M-1 cm-1 at 265 nm (Carpeni, 1938).…”
Section: Methodsmentioning
confidence: 99%
“…So that the L-gulonolactone oxidase reaction in the initial period could be followed, the formation of L-ascorbic acid was determined spectrophotometrically by using a Union Giken stopped-flow spectrophotometer (Union Giken, Osaka, Japan). The rate of the reaction was calculated by using a molar extinction coefficient of 15 300 M-1 cm-1 at 265 nm (Carpeni, 1938).…”
Section: Methodsmentioning
confidence: 99%