Untersuchungen über die Glucuronsäure, ihre quantitative Bestimmung und ihre Farbenreaktionen

Lefèvre, K. U.; Tollens, B.

doi:10.1002/cber.19070400494

Cited by 129 publications

(23 citation statements)

References 6 publications

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“…Blood. (25) and certain other substances, and that the normal fasting glucuronic acid content of plasma ranges from 2.5 to 4.5 mg. per cent (26), this orcinol value cannot be regarded as representing pentose. The orcinol value obtained on control blood filtrates was subtracted from each subsequent value.…”

Section: Methodsmentioning

confidence: 99%

Physiological Disposition and Metabolic Fate of Infused Pentoses in Man

Wyngaarden¹,

Segal²,

Foley³

1957

J. Clin. Invest.

107

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Section: Methodsmentioning

confidence: 99%

Physiological Disposition and Metabolic Fate of Infused Pentoses in Man

Wyngaarden¹,

Segal²,

Foley³

1957

J. Clin. Invest.

107

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“…LEFEVRE and TOLLENS (13) found that glueuronic acid anhydride, on hydrolysis with 12 per cent. hydrochloric acid, yielded an average of 19.11 per cent.…”

Section: Relation Of Uronic Acid Anhydride To Furfural Content Of Alcmentioning

confidence: 97%

“…Uronic acids of the samples were estimated by determining carbon dioxide by the Lefevre and Tollens method (13) Since pectin is chiefly composed of uronic acids, the yield of CO2 by the fractions should give a fair approximation of the pectin content. Pectin is relatively insoluble in alcohol; therefore, most of the CO2-yielding substances should occur in the alcohol-insoluble-solids fraction.…”

Section: Introductionmentioning

confidence: 99%

Carbohydrate Fractions of Lemon Peel

Sinclair

Crandall

1949

Plant Physiol.

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“…It contained 98 percent of galacturonic acid as determined by the carbondioxide method [9], but analyses of material purchased at various times have differed considerably. The method given here is suitable for a pectic acid having a galacturonic acid content of 95 percent or above.…”

Section: Preparation Of Sodium Strontium Galacturonate From Pectic Acidmentioning

confidence: 99%

Preparation of sodium strontium galacturonate from citrus products

Frush¹,

Isbell²

1944

J. RES. NATL. BUR. STAN.

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The present paper describes the convenient separation of galacturonic acid in the form of sodium strontium galacturonate from the hydrolyzates of citrus products, namely p ectic acid, p ectin, and the peel of oranges and of grapefruit. The method s are suitable for the preparation of large or small quantities of the salt, and it is believed that the preparation from pectic acid is commercially practicable.Sodium strontium galacturonate is obtained from pectic acid in about 90-percent yield without the use of alcohol or other organic solvent. By treatment of the salt with an equivalent quantity of aqueous sulfuric acid, a solution is obtained from which about 65 percent of the galacturonic acid may be crystallized in one crop, subst ant ially pure. Addi tional crops obt ained by the use of an organic solvent make the yield nearly quantitative.Pectin is not quite so satisfactory in the process as pectic acid, but because of its educational value, the preparation of sodium strontium galacturonate from pect in might be included in a course of laboratory instruction to demonstrate the presence of galact uronic acid in pectic substances. Both orange p eel and grapefruit peel may be used for the preparation of sodium strontium galacturonate, but the industrial use of these materials does not seem feasible at present on account of the large quant ities of relatively expensive enzyme required for hydrolysis. CONTENTS Page

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Untersuchungen über die Glucuronsäure, ihre quantitative Bestimmung und ihre Farbenreaktionen

Cited by 129 publications

References 6 publications

Physiological Disposition and Metabolic Fate of Infused Pentoses in Man

Physiological Disposition and Metabolic Fate of Infused Pentoses in Man

Carbohydrate Fractions of Lemon Peel

Preparation of sodium strontium galacturonate from citrus products

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