Rheological properties of cellulose hydrogels prepared from Cladophora cellulose powder
2007 (English)In: Food Hydrocolloids, ISSN 0268-005X, E-ISSN 1873-7137, Vol. 21, no 2, 267-272 p.Article in journal (Refereed) Published
The rheological properties of cellulose hydrogels prepared from cellulose powder of algal origin (Cladophora sp. green algae) were investigated and compared to a commercially available dispersive cellulose grade (Avicel RC-591). The rheological properties of cellulose hydrogels were investigated using a controlled rate instrument of couette type in the dynamic oscillation mode. Cladophora cellulose powder was dispersed in carboxymethylcellulose solutions of different concentrations. It was found that Cladophora cellulose forms gel structures at cellulose concentrations as low as 0.2% (w/v), whereas the lower threshold for the commercially available analog is around 1.5% (w/v) solids contents. Carboxymethylcellulose, even though useful in aiding the dispersion, has a negative effect on the viscoelastic properties of Cladophora cellulose when used in high concentrations. Cladophora cellulose powder could be a useful alternative to commercially available dispersible cellulose grades when very low quantities of stabilizing agents are required.
Place, publisher, year, edition, pages
2007. Vol. 21, no 2, 267-272 p.
Cladophora cellulose, Avicel RC/CL grades, Dispersive cellulose, Gels, Rheological properties
Natural Sciences Engineering and Technology
IdentifiersURN: urn:nbn:se:uu:diva-24909DOI: 10.1016/j.foodhyd.2006.04.003ISI: 000242510300016OAI: oai:DiVA.org:uu-24909DiVA: diva2:52683