The Mechanism of Carbohydrate Oxidation. Xi. The Action of Potassium Hydroxide on Maltose

Evans, William Lloyd; Benoy, Marjorie Pickard

doi:10.1021/ja01364a042

Cited by 15 publications

(2 citation statements)

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“…Cellobiose pH stability test, Time resolved analysis, Cellobiose oxidation – CV and NMR analysis. The authors have cited additional references within the Supporting Information [50–53] …”

Section: Supporting Information Summarymentioning

confidence: 99%

Electrochemical Cellobiose Valorization: Anodic Oxidation to Cellobionic Acid and Cathodic Reduction to Cellobitol

et al. 2023

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This study elucidates key parameters allowing the electrochemical valorization of cellobiose, by creating value-added products by both, anodic oxidation, and cathodic reduction. We demonstrate the first electrochemical reduction of cellobiose to cellobitol in a divided cell using Pb as cathode, leading up to 49 % conversion, though with long reaction times (over 26 h) and low coulombic efficiency (CE) of 4 %. The successful synthesis of cellobionic acid was demonstrated by mediated oxidation in an undivided electrochemical cell, using a graphite anode and CaBr 2 as electrocatalytic mediator. Cellobiose oxidation was highly selective, allowing for up to 92 % conversion to cellobionic acid at 48 % CE when using a charge of 2 FE.

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Section: Supporting Information Summarymentioning

confidence: 99%

Electrochemical Cellobiose Valorization: Anodic Oxidation to Cellobionic Acid and Cathodic Reduction to Cellobitol

et al. 2023

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“…Tapioca (3 5.9, 6.8, 6.9 5.7, 6.6, 6.9 6.7, 7.5 9.7, 11.5 9.8,10.6,11.0, 11.2, 11.9, 12. This soluble material probably represents smaller molecules occurring naturally in the starch granule.…”

Section: Starch Alkali Numbermentioning

confidence: 99%

A Simplified Alkali-Lability Determination for Starch Products

Schoch¹,

Jensen²

1940

Ind. Eng. Chem. Anal. Ed.

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Über die Beschleunigung der Spaltung von Oligosacchariden in Anwesenheit von Metall‐Ionen

Trapmann

Sethi

1962

Archiv der Pharmazie

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Bd.1962, Nr. 12 tfber die Beachleunigung der Spltung a m Oligosaeehariden 2186. H. T r a p m a n n und S. S e t h i mer die Beschleunigung der Spaltung von Oligosacchariden in Anwesenheit von met all-Ionen*)Eine Reihe von Metall-Ionen eignen sich dazu, die glucosidische Bindung in Oligosacchariden bereits bei niedrigen Temperaturen zu losen. Die Hydrolyse der Disaccharide wird in Anwesenheit bestimmter Metall-Ionen sowohl im sauren als auch im alkalischen Milieu, die der Trisaccharide nur in saurem Medium beschleunigt.I. S p a l t u n g von Disacchariden I n s a u r e m MediumIm Falle der Saccharose, Turanose, Lactose, Cellobiose und Melibiose erfolgt bei Gegenwart von Thorium-und Zirkonium-Ionen Spaltung der glucosidischen Bindung. Bei einem pH-Wert von 3,5 und einer Temperatur von 37" ist der katalytische Effekt der Metall-Ionen gering, bei hoherer Reaktionstemperatur ('70") verlauft die Reaktion verhaltnismiiBig rasch. Dabei werden Saccharose, Turanose und Melibiose durch die Ionen des Thoriums, Lactose und Cellobiose hingegen durch die Ionen des Zirkoniums besser hydrolysiert. Lanthan-und Cer( 111)-Ionen zeigen bei unseren Reaktionsbedingungen keine katalytische Wirksamkeit.Trehalose laBt selbst nach einer Versuchsdauer von 120 Stunden bei 70" keine Spaltung der glucosidischen Bindung erkennen. *) XXXIV. Mitt. in der von 1. B a m n n und Mitarb. begonnenen Untersurhungsreihe: XXXIII. Mitt.: E. Bamann, H . T r a p n n und B. Oechsner, Arch. Pharmaz. 295, 663 (1962); siehe auch: E. Barnann, H. Tmprnann, J . Riehl und S. Sethi, Naturwissenschaften (im Druck).

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The Mechanism of Carbohydrate Oxidation. Xi. The Action of Potassium Hydroxide on Maltose

Abstract: Evans and marjoriE p. benoy Vol. 52 compound separated by crystallization from the above ethyl acetate-alcohol mixture in the same way as the dimethylpiperidinium bromide. There was thus obtained 0.59 g. of pure quaternary ammonium salt from 1.57 g. of the amine.

Cited by 15 publications

References 1 publication

Electrochemical Cellobiose Valorization: Anodic Oxidation to Cellobionic Acid and Cathodic Reduction to Cellobitol

Electrochemical Cellobiose Valorization: Anodic Oxidation to Cellobionic Acid and Cathodic Reduction to Cellobitol

A Simplified Alkali-Lability Determination for Starch Products

Über die Beschleunigung der Spaltung von Oligosacchariden in Anwesenheit von Metall‐Ionen

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