Results 181 to 190 of about 25,044 (226)
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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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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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ChemInform, 1990
AbstractVarious acetyl‐protected galactopyranuronic acids such as (IV) or (VII) with differently protected carboxyl groups are synthesized.
CHR. VOGEL, H. BOYE, H. KRISTEN
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AbstractVarious acetyl‐protected galactopyranuronic acids such as (IV) or (VII) with differently protected carboxyl groups are synthesized.
CHR. VOGEL, H. BOYE, H. KRISTEN
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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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Methanolysis of D-galacturonic acid: dimethyl acetals
Carbohydrate Research, 1974Dimethyl acetals of galacturono-6,3-lactone and methyl galacturonate are formed during methanolysis of galacturonic acid. The products of methanolysis were studied by ion exchange and gas chromatography. Trimethylsilyl (TMS) derivatives were used in gas chromatography. Structure determinations were made from mass spectra of the TMS derivatives.
Kenneth Larsson, Göran Petersson
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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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ChemInform, 1994
AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
C. VOGEL, P. GRIES
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AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
C. VOGEL, P. GRIES
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Formation of Phenolic Compounds from
Aqueous d-galacturonic acid (d-GalA) model systems treated at 130 °C at different pH values show an intense color formation, whereas other reducing sugars, such as d-galactose (d-Gal), scarcely react. GC-MS measurements revealed the presence of several phenolic compounds: e.g., 3,8-dihydroxy-2-methyl-4 H-chromen-4-one (chromone) and 2,3 ...
Alexandra Urbisch +4 more
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Preparation of UDP-galacturonic acid using UDP-sugar pyrophosphorylase
Analytical Biochemistry, 2006UDP-galacturonic acid, the activated form of galacturonic acid (GalUA), is synthesized both de novo and by salvage pathways. The UDP-GalUA pyrophosphorylase gene involved in the salvage pathway has not been identified. Here we show that UDP-sugar pyrophosphorylase from Pisum sativum with a broad specificity has UDP-GalUA pyrophosphorylase activity. The
Takao, Ohashi +3 more
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Liebigs Annalen, 1997
AbstractA number of D‐galacturonic acid derivatives (1, 3, 7 and 9) have been selectively deacetylated in enzyme‐catalyzed reactions. The 2‐O‐acetyl groups were selectively hydrolyzed from 2,3,4‐tri‐O‐acetyl‐β‐D‐galactopyranurono‐6,1‐lactone (1), and methyl [methyl (3) and benzyl (7) 2,3,4‐tri‐O‐acetyl‐β‐D‐galactopyranosid]uronates, affording the ...
Christian Vogel +2 more
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AbstractA number of D‐galacturonic acid derivatives (1, 3, 7 and 9) have been selectively deacetylated in enzyme‐catalyzed reactions. The 2‐O‐acetyl groups were selectively hydrolyzed from 2,3,4‐tri‐O‐acetyl‐β‐D‐galactopyranurono‐6,1‐lactone (1), and methyl [methyl (3) and benzyl (7) 2,3,4‐tri‐O‐acetyl‐β‐D‐galactopyranosid]uronates, affording the ...
Christian Vogel +2 more
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