Rheological behavior of gel of xanthan with seed galactomannan: Effect of hydroalcoholic–ascorbic acid

✍ Scribed by Heidegrid Siebert Koop; Carlos Eduardo de Oliveira Praes; Fany Reicher; Carmen Lúcia de Oliveira Petkowicz; Joana Léa Meira Silveira

• Book ID: 103847498
• Publisher: Elsevier Science
• Year: 2009
• Tongue: English
• Weight: 504 KB
• Volume: 29
• Category: Article
• ISSN: 0928-4931
• DOI: 10.1016/j.msec.2008.10.004

✦ Synopsis

The rheological properties of a physically linked hydroalcoholic gel obtained from a binary system consisting of xanthan and of galactomannan from the seeds of Mimosa scabrella (X:GB) with a low Man:Gal ratio of 1.1:1 were compared to those of guar gum (Man:Gal ratio 1.5:1, X:GG). The rheological analysis demonstrated an improvement of strength of X:GB and X:GG hydrogels after dispersion of the polysaccharides in buffer with 1,2-propanediol. The addition of ascorbic acid to these hydrogel formulations resulted in a slight decrease of gel strength. Both hydrogels presented rheological stability over 12 weeks at ambient temperature.