Structural features of brown algae cellulose
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ORIGINAL RESEARCH
Structural features of brown algae cellulose Konstantin Bogolitsyn . Anastasia Parshina . Lyudmila Aleshina
Received: 8 June 2020 / Accepted: 22 September 2020 Ó Springer Nature B.V. 2020
Abstract Currently, cellulose is one of the most requested natural polymers and the material has a wide range of industrial applications. The most studied and extensively used source of cellulose are coniferous and deciduous wood. At the same time, taking into account the structural and chemical properties of the biopolymer, the influence on the formation of nano-, micro- and macro-characteristics, and the conditions of its biosynthesis, the industry increasingly pay attention to its alternative sources, including algae. In this work, a protein-polysaccharide complex, where cellulose is the principal component, was isolated from samples of brown algae samples collected from the White and Yellow Seas. The structural features of
the brown algae cellulose complexes were studied using classical physicochemical methods, as well as FTIR spectroscopy, X-ray spectroscopy, and scanning electron microscopy Analyses revealed stable phase Ib forms of cellulose predominated in arctic brown algal samples, and the degree of crystallinity of the cellulose product was 54–59%. Scanning electron microscopy revealed that the compound has a fibrous structure, which is most pronounced in samples derived from arctic kelp. These results exfpand our understanding of use of algal cellulose and macrophytes as a valuable raw material for the production of sorption and composite cellulose-based materials.
K. Bogolitsyn A. Parshina (&) Northern (Arctic) Federal University, 17, Northern Dvina Emb., Arkhangelsk, Russia 163002 e-mail: [email protected] K. Bogolitsyn N. Laverov Federal Center for Integrated Arctic Research, Institute of Ecological Problems of the North, 23, Northern Dvina Emb., Arkhangelsk, Russia 163000 L. Aleshina Petrozavodsk State University, 33 Prosp. Lenina, Petrozavodsk, Russia 185640
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Cellulose
Graphic abstract
Keywords Brown algae Cellulose Structure Xray diffraction Degree of crystallinity
Introduction Cellulose as one of the most demanded natural polymers found application in a wide range of industries. The most studied its source is the wood of coniferous and deciduous trees. However, given the increasingly complex environmental situation and the necessity to increase production volumes, more attention is paid to alternative sources of cellulose. A significant disadvantage of wood raw materials is the presence of a large amount of lignin’s, which greatly complicate the process of isolating cellulose. Herbaceous plants, algae and bacteria do not have this disadvantage (Tarchoun et al. 2019; Chen et al. 2016), therefore, they have great prospects in the field of high-quality pulp production.
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Algae contain 10–13% cellulose (alginophytes and agarophytes) (Siddhanta et al. 2009). However, there is evidence that many species may contain less cellul
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