Results 171 to 180 of about 2,194 (217)

A simple non-aqueous method for carboxymethylation of galactomannans [PDF]

Carbohydrate Polymers, 2005
A simple non-aqueous method for the preparation of carboxymethyl (CM) derivatives of galactomannans and other biopolymers has been developed.
R N Tharanathan
exaly   +1 more source

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On the galactosyl distribution of commercial galactomannans

Carbohydrate Research, 2000
A simple method was developed that enabled the enzymatic determination of the galactose distribution in galactomannans. endo-Mannanase of Aspergillus niger was used to degrade the galactomannan polymers and the degradation products were determined with high-performance anion-exchange chromatography.
Daas, P.J.H., Schols, H.A., de Jongh, H.H.J.   +2 more
openaire   +2 more sources

Galactomannans in Coffee

2015
Abstract Galactomannans are the most abundant constituents of coffee beans. Generically, the structure of these polysaccharides consists of a linear backbone of β-(1→4)-linked d -mannose residues, some of them substituted at O -6 by single residues of α- d -galactose.
Ana S.P. Moreira, Fernando M. Nunes, M. Rosário M. Domingues, Manuel A. Coimbra   +3 more
openaire   +1 more source

Suitability of novel galactomannans as edible coatings for tropical fruits [PDF]

Journal of Food Engineering, 2009
Great losses in the quality of fresh fruits occur between their harvest and consumption, and one of the most important drawbacks in fruit distribution chains is their short shelf life.
MIGUEL Angelo Cerqueira
exaly   +2 more sources

Characterization of galactomannans by capillary electrophoresis

Food Additives and Contaminants, 2000
Capillary electrophoresis (CE) was utilized in the characterization of various galactomannans. Standards of gums were extracted with 50% CH3CN to remove the residual proteins from the gum matrix. Separation buffers were optimized with respect to pH, buffer concentration and presence of sodium dodecyl sulphate, yielding protein profiles from which the ...
openaire   +2 more sources

Specific modifications of galactomannans

Carbohydrate Polymers, 2000
A sample of galactomannan extracted from the seeds of Leucaema leucocephala is modified on a specific position using the reactant 2,2,6,6-tetramethylpiperidine-1-oxyl (TEMPO). This method allows oxidation at the C-6 position of galactose and free mannose (not connected to a side group).
Sierakowski, M.R., Milas, M., Desbrieres, Jacques, Rinaudo, M.   +3 more
openaire   +2 more sources

Galactomannans as a sieving matrix in capillary electrophoresis

Electrophoresis, 2001
Purification of galactomannans including guaran, tara gum, and locust bean gum is described as well as their use as a sieving matrix in DNA sequencing by capillary electrophoresis (CE). Three methods of galactomannan purification were developed and tested using guaran.
V, Dolník, W A, Gurske, A, Padua
openaire   +2 more sources

Kinetics of Enzymatic Depolymerization of Guar Galactomannan

Biomacromolecules, 2006
A new mathematical model based on Michaelis Menten (MM) kinetics is developed to predict the changes in molecular weight distribution (MWD) during the enzymatic depolymerization of guar galactomannan. The model accounts for the effect of branching by considering the guar molecule as a substrate having three types of bonds with different MM kinetic ...
Shamsheer, Mahammad, Robert K, Prud'homme, George W, Roberts, Saad A, Khan   +3 more
openaire   +2 more sources

Galactomannan: A versatile biodegradable seed polysaccharide

International Journal of Biological Macromolecules, 2013
Polysaccharides have been finding, in the last decades, very interesting and useful applications in the biomedical and, specifically, in the biopharmaceutical field. Galactomannans are a group of storage polysaccharides from various plant seeds that reserve energy for germination in the endosperm.
Vipul D, Prajapati, Girish K, Jani, Naresh G, Moradiya, Narayan P, Randeria, Bhanu J, Nagar, Nikhil N, Naikwadi, Bhavesh C, Variya   +6 more
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Degradation of galactomannan by aClostridium butyricum strain

Antonie van Leeuwenhoek, 1991
An anaerobic, sporeforming, galactomannan-degrading bacterium was isolated from methanogenic granular sludge of an UASB reactor used for treatment of wastewater from a sugar refinery. The isolate degraded the polymer rapidly (doubling time was 55 min) and completely in mineral media.
Dong Xiuzhu, Schyns, P.J.Y.M.J., Stams, A.J.M.   +2 more
openaire   +2 more sources