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Related Concept Videos

Red Algae01:23

Red Algae

Red algae, also known as rhodophytes, are primarily found in marine environments, though some species inhabit freshwater and terrestrial ecosystems. These organisms exist in both unicellular and multicellular forms, with some multicellular varieties reaching macroscopic sizes.As phototrophic organisms, red algae contain chlorophyll a; however, their chloroplasts lack chlorophyll b. Instead, they possess phycobiliproteins, which serve as major light-harvesting pigments, similar to those found in...
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The microbial conversion of organic matter into biofuels holds potential as a renewable energy source. Among biofuel sources, microalgae are recognized as a highly efficient and adaptable feedstock for biodiesel production, owing to their rapid biomass accumulation, elevated lipid productivity, and capacity to proliferate in diverse aquatic systems, including freshwater, marine, and wastewater habitats. Unlike terrestrial crops, microalgae do not compete for land and can achieve significantly...

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Sulfated Galactans From Red Algae: Cutting-Edge Extraction, Purification, Structural Characterization, Bioactivities,

Divya Vijayakumar1

  • 1Department of Biotechnology, SIMATS Engineering, Saveetha University, Chennai, Tamil Nadu, India.

Chemistry & Biodiversity
|June 24, 2026
PubMed
Summary

Red algal sulfated galactans (SGs) offer versatile applications in medicine and industry. This review highlights green extraction methods and explores their potential in biomaterials, drug delivery, and environmental solutions.

Keywords:
agaransbioeconomy, biomedical applicationscarrageenanscosmeceuticalsdrug deliveryenvironmental remediationgreen extractionnanotechnologyred algaestructure–function relationshipsulfated galactanssustainabilitytissue engineering

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Area of Science:

  • Marine Biotechnology
  • Polymer Chemistry
  • Biomaterials Science

Background:

  • Red algal sulfated galactans (SGs), including agarans and carrageenans, are structurally diverse marine polysaccharides.
  • These SGs exhibit significant biofunctional and physicochemical versatility, making them valuable for various applications.

Purpose of the Study:

  • To review current advancements in the extraction, purification, and structural analysis of SGs.
  • To explore the structure-function relationships and biomedical potential of SGs.
  • To discuss challenges and future directions for SG-based biomaterials.

Main Methods:

  • Focus on green extraction techniques: enzyme-, ultrasound-, and microwave-assisted extraction.
  • Critical analysis of sulfation patterns, molecular weights, and glycosidic linkages.
  • Evaluation of functional derivatization, multi-omics integration, and nanotechnological approaches.

Main Results:

  • SGs show promise in tissue engineering, wound healing, drug delivery, and regenerative medicine.
  • Emerging applications include environmental remediation, cosmeceuticals, and smart medical materials.
  • Personalization of SG-based biomaterials through advanced techniques is a key development.

Conclusions:

  • Red algal SGs possess vast therapeutic and industrial potential.
  • Addressing translational issues like source variability and scalability is crucial for broader adoption.
  • Integrating molecular engineering, sustainability, and bioeconomy models will unlock SG capabilities.