Colloidal features of softwood galactoglucomannans-rich extract

Show full item record



Permalink

http://hdl.handle.net/10138/317020

Citation

Bhattarai , M , Sulaeva , I , Pitkänen , L , Kontro , I , Tenkanen , M , Potthast , A & Mikkonen , K S 2020 , ' Colloidal features of softwood galactoglucomannans-rich extract ' , Carbohydrate Polymers , vol. 241 , 116368 . https://doi.org/10.1016/j.carbpol.2020.116368

Title: Colloidal features of softwood galactoglucomannans-rich extract
Author: Bhattarai, Mamata; Sulaeva, Irina; Pitkänen, Leena; Kontro, Inkeri; Tenkanen, Maija; Potthast, Antje; Mikkonen, Kirsi S.
Contributor: University of Helsinki, Department of Food and Nutrition
University of Helsinki, Department of Food and Nutrition
University of Helsinki, Materials Physics
University of Helsinki, Department of Food and Nutrition
University of Helsinki, Department of Food and Nutrition
Date: 2020-08-01
Language: eng
Number of pages: 10
Belongs to series: Carbohydrate Polymers
ISSN: 0144-8617
URI: http://hdl.handle.net/10138/317020
Abstract: Development of a sustainable bioeconomy requires valorization of renewable resources, such as wood hemicelluloses. The intra- and inter-molecular associations of hemicelluloses within themselves or with other wood components can result in complex macromolecular features. These features exhibit functionality as hydrocolloids, however macromolecular characterization of these heterogeneous materials are challenging using conventional techniques such as size-exclusion chromatography. We studied galactoglucomannans (GGM) -rich softwood extracts at two grades of purity—as crude extract and after ethanol-precipitation. Asymmetrical flow field-flow fractionation (AF4) was optimized and utilized to fractionate size classes in GGM extracts, and subsequent characterization was performed with light scattering and microscopy techniques. Both GGM extracts contained polysaccharides of around 10,000 g/mol molar mass, and colloidal assemblies and/or particles in sub-micron size range. The optimized AF4 method facilitates the characterization of complex biomass-derived carbohydrates without pre-fractionation, and provides valuable understanding of their unique macromolecular features for their future application in food, pharmaceuticals, and cosmetics.
Subject: EMULSIONS
FRACTIONATION
LIGNIN
MACROMOLECULES
SPRUCE GALACTOGLUCOMANNANS
STABILIZATION
aggregates
asymmetrical flow field-flow fractionation
galactoglucomannans
particles
wood hemicelluloses
116 Chemical sciences
Rights:


Files in this item

Total number of downloads: Loading...

Files Size Format View
1_s2.0_S0144861720305427_main.pdf 4.166Mb PDF View/Open

This item appears in the following Collection(s)

Show full item record