Results 141 to 150 of about 13,726 (184)
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Methyl-α-D-galacturonic acid methyl ester
Acta Crystallographica Section C Crystal Structure Communications, 1994The structure of methyl methyl-α-D-galacturonoate monohydrate, C 8 H 14 O 7 .H 2 O, has been redetermined. The sugar ring has the expected 4 C 1 conformation. The orientation of the methoxy group is gauche-trans and the methyl ester group is nearly planar and lies equatorial to the ...
LAMBA D +2 more
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Utilization of electrodialysis for galacturonic acid recovery
Desalination, 2009Recovery of galacturonic acid from sugar beet pulp's pectin hydrolysate by electrodialysis process was studied. An asymmetric electrodialysis cell (consisted of three cation-selective and two anion-selective membranes) was constructed which was firstly tested by model solutions.
Eszter Molnár +5 more
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Galacturonic acid groups in birch xylan
Wood Science and Technology, 1977A large number of reducing xylose end groups are present in birch wood (Betula verrucosa) while all galacturonic acid moieties are non-reducing. A large portion of the reducing xylose end groups are removed during treatments with alkali used for the islation of xylan, while reducing galacturonic acid moieties are formed by endwise degradation during ...
Thomas Ericsson +2 more
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The d-galacturonic acid catabolic pathway in Botrytis cinerea
Fungal Genetics and Biology, 2011D-galacturonic acid is the most abundant component of pectin, one of the major polysaccharide constituents of plant cell walls. Galacturonic acid potentially is an important carbon source for microorganisms living on (decaying) plant material. A catabolic pathway was proposed in filamentous fungi, comprising three enzymatic steps, involving D ...
Zhang, L., Thiewes, H., van Kan, J.A.L.
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On the Reactivity and Selectivity of Galacturonic Acid Lactones
European Journal of Organic Chemistry, 2012AbstractThe reactivity and stereoselectivity of a galacturonic acid 3,6‐lactone thioglycosyl donor, previously described as a highly reactive glycosylating agent, has been investigated by using a series of competition experiments and condensation reactions with different thiophilic activator systems.
Alphert E. Christina +8 more
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Free Galacturonic Acid in Citrus Fruits
Botanical Gazette, 19581. Very little free galacturonic acid was found at any time during the normal maturation of tree-ripened Valencia oranges. An ion-exchange procedure was used to collect the organic acids, and the presence of monogalacturonic acid in the eluate was determined with a carbazole colorimetric method and a chromatographic analysis procedure.
Walton B. Sinclair, Virgil A. Jolliffe
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The Antitubercular Activity of D-Galacturonic Acid Isonicotinyl Hydrazone*
Journal of the American Pharmaceutical Association (Scientific ed.), 1953D-Galacturonic acid isonicotinyl hydrazone, a new compound, is prepared with a high yield by combinin d-galacturonic acid with isonicotinic acid hydrazide. The new drug is highly active, both in vitro and in vivo, against Mycobacterium tuberculosis H37Rv and comparatively much less toxic than isonicotinic acid hydrazide.
P P, SAH, S A, PEOPLES
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Solution properties and electrospinning of poly(galacturonic acid) nanofibers
Carbohydrate Polymers, 2019Poly(galacturonic acid) (PGuA) is an important natural biopolymer, however its potential has not been realized due to its anionic nature and rigid structure, which limits its processability into fine films and fibres. This study aims at modifying the solution properties of PGuA in alkaline medium (aq.
Deepika Gupta +2 more
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Preparation of 14C-labeled pectic acid and D-galacturonic-14C acid
Carbohydrate Research, 1972Abstract 14 C-labeled D -galacturonan [poly( D -galacturonic acid)] was isolated from the alga Chara globate grown in the presence of 14 CO 2 . The polysaccharide provides a convenient source for the preparation of uniformly 14 C-labeled oligo( D -galacturonic acids) and D -galacturonic acid.
Y, Milner, G, Avigad
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Analytical Biochemistry, 1992
A method of quantitating uronic acids and uronic acids from pectin in particular is described. The method uses carbazole in 80% sulfuric acid with borate ions added. The assay is carried out at 60 degrees C. This assay has some cross reactivity with aldose sugars and must be timed precisely.
K A, Taylor, J G, Buchanan-Smith
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A method of quantitating uronic acids and uronic acids from pectin in particular is described. The method uses carbazole in 80% sulfuric acid with borate ions added. The assay is carried out at 60 degrees C. This assay has some cross reactivity with aldose sugars and must be timed precisely.
K A, Taylor, J G, Buchanan-Smith
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