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Updated: Feb 13, 2026
06:58
Looking Outwards: Isolation of Cyanobacterial Released Carbohydrate Polymers and Proteins
Published on: May 27, 2019
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Development of Functional Bionanocomposites Using Cyanobacterial Polysaccharides
Maiko K Okajima1, Saranyoo Sornkamnerd1, Tatsuo Kaneko1
1Graduate School of Advanced Science and Technology, Japan Advanced Institute of Science and Technology, 1-1 Asahidai, Nomi, Ishikawa, 923-1292, Japan.
Chemical Record (New York, N.Y.)
|March 16, 2018
Summary
Cyanobacterial polysaccharides, like sacran, are eco-friendly materials for creating functional bionanocomposites. These novel materials demonstrate potential for metal recovery and adsorption of ions like neodymium.
Area of Science:
- Biomaterials Science
- Environmental Biotechnology
- Nanotechnology
Background:
- Cyanobacteria are sustainable microreactors for producing biomolecules, including polysaccharides.
- Cyanobacterial polysaccharides possess functional groups enabling interaction with metals and inorganics for bionanocomposite formation.
- Sacran, an anionic polysaccharide from Aphanothece sacrum, is a key component for developing functional bionanocomposites.
Purpose of the Study:
- To explore the use of cyanobacterial polysaccharides in creating eco-friendly bionanocomposites.
- To investigate the functional properties of sacran-based bionanocomposites, including metal interaction and ion adsorption.
- To assess the potential of these bionanocomposites for applications such as metal recovery.
Main Methods:
- Extraction and utilization of sacran polysaccharide from Aphanothece sacrum.
- Formation of gel-type bionanocomposites with various metal cations.
- Complexation of sacran with multi-wall carbon nanotubes (MWCNT) and subsequent electrophoresis.
- Preparation of sacran bionanocomposites with sepiolite for ion adsorption studies.
Main Results:
- Sacran-based bionanocomposites exhibited photoresponsive functions when complexed with metal cations.
- MWCNT/sacran dispersions effectively adsorbed various metal ions, forming hardened hydrogel beads.
- Sacran-sepiolite bionanocomposites demonstrated efficient neodymium ion adsorption capabilities.
Conclusions:
- Cyanobacterial polysaccharides are versatile precursors for eco-friendly bionanocomposites.
- These bionanocomposites show promise for applications in metal recovery and ion adsorption.
- The integration of cyanobacterial polysaccharides with materials like MWCNT and sepiolite enhances their functionality.
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