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Diatoms for Carbon Sequestration and Bio-Based Manufacturing

Authors
  • Sethi, Deepak1
  • Butler, Thomas O.1
  • Shuhaili, Faqih1, 2
  • Vaidyanathan, Seetharaman1
  • 1 (S.V.)
  • 2 School of Bioprocess Engineering, Universiti Malaysia Perlis (UniMAP), Arau 02600, Perlis, Malaysia
Type
Published Article
Journal
Biology
Publisher
MDPI
Publication Date
Aug 10, 2020
Volume
9
Issue
8
Identifiers
DOI: 10.3390/biology9080217
PMID: 32785088
PMCID: PMC7464044
Source
PubMed Central
Keywords
License
Green

Abstract

Carbon dioxide (CO2) is a major greenhouse gas responsible for climate change. Diatoms, a natural sink of atmospheric CO2, can be cultivated industrially in autotrophic and mixotrophic modes for the purpose of CO2 sequestration. In addition, the metabolic diversity exhibited by this group of photosynthetic organisms provides avenues to redirect the captured carbon into products of value. These include lipids, omega-3 fatty acids, pigments, antioxidants, exopolysaccharides, sulphated polysaccharides, and other valuable metabolites that can be produced in environmentally sustainable bio-manufacturing processes. To realize the potential of diatoms, expansion of our knowledge of carbon supply, CO2 uptake and fixation by these organisms, in conjunction with ways to enhance metabolic routing of the fixed carbon to products of value is required. In this review, current knowledge is explored, with an evaluation of the potential of diatoms for carbon capture and bio-based manufacturing.

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