+ Site Statistics
+ Search Articles
+ PDF Full Text Service
How our service works
Request PDF Full Text
+ Follow Us
Follow on Facebook
Follow on Twitter
Follow on LinkedIn
+ Subscribe to Site Feeds
Most Shared
PDF Full Text
+ Translate
+ Recently Requested

Delonix regia galactomannan hydrolysates: Rheological behavior and physicochemical characterization

Delonix regia galactomannan hydrolysates: Rheological behavior and physicochemical characterization

Carbohydrate Polymers 206: 573-582

The galactomannan extracted from Delonix regia (DRGM) seeds was hydrolyzed at different enzyme dosages and reaction times. A linear relation between inverse Molecular weight (Mn) and hydrolysis time was obtained, and the Mn reduction was controlled from 4.86 × 105 to 1.95 × 105 Da. The hydrolysis does not affect galactomannan structure as observed by FT-IR and DRX, maintaining an amorphous structure with only a slight increase in galactose:mannose relationship as observed by 1H NMR. A rheological behavior shift was observed below Mn = 4.15 × 105 Da when viscoelastic behavior changes from a weak gel to a macromolecular solution in a 3% (w/v) galactomannan hydrolysate. Shear viscosity of 3% (w/v) galactomannan dispersion in water follows closely a power law equation where the consistency index decreased, and the flow behavior index increased with increasing hydrolysis degree. These results indicate the conditions for obtaining specific viscoelastic properties of DRGM dispersions for specific applications by a careful control of the enzymatic hydrolysis process.

Please choose payment method:

(PDF emailed within 0-6 h: $19.90)

Accession: 066010086

Download citation: RISBibTeXText

PMID: 30553360

DOI: 10.1016/j.carbpol.2018.11.028

Related references

Physicochemical properties of carboxymethylated flamboyant ( Delonix regia ) seed gum Propiedades fisicoqumicas de la goma carboximetilada de flamboyn ( Delonix regia ). CyTa - Journal of Food 8(3): 169-176, 2010

A galactomannan from the seeds of Delonix regia. Phytochemistry 11 (3) 1129-1132, 1972

The chemical structure of galactomannan isolated from seeds of Delonix regia. Bioscience Biotechnology and Biochemistry 74(5): 1110-1112, 2010

Studies on some physicochemical factors affecting the breeding and abundance of mosquitoes in phytotelmata on Delonix regia. Journal Of Biological Sciences: 8, 1304-1309, 2008

Purification and characterization of lectin from seeds of Delonix regia. Journal of Plant Biochemistry and Biotechnology 13(2): 141-144, 2004

Biochemical characterization of a lectin from Delonix regia seeds. Journal of Protein Chemistry 21(4): 279-285, 2002

Characterization of Jamaican Delonix regia and Cassia fistula Seed Extracts. Biochemistry Research International 2016: 3850102, 2016

Germination of Delonix regia Raf (Poinciana regia Bojer) (Leguminosae). Revista de agricultura 58(3): 115-124, 1983

Anthocyanin characterization of pilot plant water extracts of Delonix regia flowers. Molecules 13(6): 1238-1245, 2008

Preparation and characterization of activated carbon from a new raw lignocellulosic material: flamboyant (Delonix regia) pods. Journal of Environmental Management 92(1): 178-184, 2011

Phyto-synthesis and structural characterization of catalytically active gold nanoparticles biosynthesized using Delonix regia leaf extract. 3 Biotech 6(2): 118, 2016

Studies on characterization and removal of methylene blue with Delonix regia plant litters activated carbon encapsulated nano metal oxide. Journal of Environmental Biology 36(4): 933-940, 2015

Physicochemical Characterization and Rheological Behavior Evaluation of the Liquid Crystalline Mesophases Developed with Different Silicones. Journal of Dispersion Science and Technology 31(1): 117-123, 2009

Genomic and cDNA cloning, characterization of Delonix regia trypsin inhibitor (DrTI) gene, and expression of DrTI in Escherichia coli. Bioscience Biotechnology and Biochemistry 71(1): 98, 2007

Germination of Delonix regia. Revista de Agricultura, Piracicaba, Brazil 58(3): 115-124, 1983