Cellulosic material obtained from Antarctic algae biomass
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Algae biomass is a raw material widely used by many industrial sectors, such as food production, pharmaceuticals, cosmetics, fertilizers, biofuels, and many others. Its usage is mainly due to the phycocolloids content, such as alginates, carrageenans, agar, etc. One of the polysaccharides present in this biomass, and still little explored is cellulose, an important resource with several technological applications, for example: production of nanocellulose, ultralightweight structures, drug delivery, tissue engineering, wound dressings, among others. Thus, we used the Antarctic algae Cystosphaera jacquinottii as raw material for the production of a cellulosic material combining alkaline treatment, bleaching, and freeze-drying. Fourier-transform infrared spectroscopy results revealed that the methodology employed was effective to obtain cellulose. X-ray diffraction analysis showed that the material obtained had crystallinity above 70%. Scanning electron microscopy analyses showed a highly porous morphology, consisting of cellulose nanofibers with a diameter about 32 nm.
KeywordsCellulose Algae biomass Cystosphaera jacquinottii
This study was financed in part by the Coordenação de Aperfeiçoamento de Pessoal de Nível Superior—Brasil (CAPES)—Finance Code 001, FAPERGS/PqG 2017 (17/2551-0001 157-0), Capes (PGCI-99999.002378/2015-09), (88887.125421/2016-00), and Forensic National Institute of Science and Technology (CNPq - Grant number 465450/2014-8). The authors would like to thank the CNANO—UFRGS for Solid State CP-MAS 13C-NMR for her invaluable technical support, as well to Electron microscopy facilities were provided by LMA-IQ-UNESP.
Compliance with ethical standards
Conflict of interest
The authors declare that they have no conflict to interest.
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