Novel nanobiocomposite hydrogels based on sage seed gum-Laponite: Physico-chemical and rheological characterization

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http://hdl.handle.net/10138/300390

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Oleyaei , S A , Razavi , S M A & Mikkonen , K S 2018 , ' Novel nanobiocomposite hydrogels based on sage seed gum-Laponite: Physico-chemical and rheological characterization ' , Carbohydrate Polymers , vol. 192 , pp. 282-290 . https://doi.org/10.1016/j.carbpol.2018.03.081

Title: Novel nanobiocomposite hydrogels based on sage seed gum-Laponite: Physico-chemical and rheological characterization
Author: Oleyaei, Seyed Amir; Razavi, Seyed Mohammad Ali; Mikkonen, Kirsi Susanna
Contributor: University of Helsinki, Department of Food and Nutrition
Date: 2018-07-15
Language: eng
Number of pages: 9
Belongs to series: Carbohydrate Polymers
ISSN: 0144-8617
URI: http://hdl.handle.net/10138/300390
Abstract: In this study, the physico-chemical and rheo-mechanical properties of sage seed gum hydrogel, reinforced by various ratios (0-25 wt.%) of Laponite, were investigated. Particles size measurements indicated the formation of large SSG-Laponite microstructures upon nanoparticle adding, due to the interactions generated between the anionic SSG and the charged surfaces of clay platelets. Laponite affected the surface tension and density of the SSG-based systems significantly, but only influenced the-potential above 20 wt.%. The dynamic rheological behavior of SSG-based nanocomposites reflected the reinforcing effect of secondary structures and percolated three-dimensional network, suggested a structural modification of the hydrogels with the Laponite loading. An improvement in texture profile analysis parameters was observed in Laponite content 5 wt.%, whereas for nanoparticles > 5 wt.%, a significant decrease was obtained. In conclusion, Laponite improved the rheological and physico-chemical properties of SSG-based hydrogel and extended its potential as promising future bio-products for industrial applications.
Subject: 416 Food Science
Polysaccharides
Hydrogels
Biocompatible clay
Galactomannan
Nanostructure
Rheology modifier
Viscoelasticity
XANTHAN GUM
CLAY
CELLULOSE
SURFACE
BEHAVIOR
POLYMER
GELS
MONTMORILLONITE
NANOPARTICLES
DISPERSIONS
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