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Related Concept Videos

Green Algae01:21

Green Algae

216
Green algae, also referred to as chlorophytes, are different from red algae in having the chloroplasts containing chlorophylls a and b, which give them their distinct green hue. However, they lack phycobiliproteins, preventing them from developing the red or blue-green pigmentation seen in red algae. In terms of photosynthetic pigment composition, green algae closely resemble plants and share a close evolutionary relationship with them. Taxonomically Green algae belong to Phylum Chlorophyta in...
216
Other Algae01:19

Other Algae

92
The group Stramenopiles include some phototrophic microorganisms. Members of this group possess flagella covered in numerous short, hairlike extensions, a feature that inspired the group's name, derived from the Latin words for "straw" and "hair." Some of the main categories of Stramenopiles include diatoms, golden algae, and brown algae.Diatoms are unicellular, photosynthetic eukaryotes, with over 200 known genera. They play a key role in the planktonic communities of both marine and...
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Overview of Algae01:28

Overview of Algae

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The kingdom Archaeplastida encompasses red and green algae, along with land plants. Unlike other protists with chloroplasts that arose through secondary endosymbiosis, only red and green algae originated from primary endosymbiotic events. This diverse group of eukaryotic organisms contains chlorophyll and performs oxygenic photosynthesis.Algae exist in various forms, from large brown kelp in coastal waters to green scum in puddles and stains on rocks or soil. Some species are responsible for...
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Biosynthesis of Lipids01:29

Biosynthesis of Lipids

98
Microbial membranes exhibit remarkable diversity in lipid composition, reflecting evolutionary adaptations to various environmental conditions. The three domains of life—Bacteria, Archaea, and Eukarya—synthesize membrane lipids through distinct biosynthetic pathways, leading to fundamental structural differences that impact membrane stability, function, and adaptability.Fatty Acid-Based Lipids in Bacteria and EukaryaBacteria and eukaryotes share a common fatty acid biosynthesis...
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Red Algae01:23

Red Algae

142
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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Related Experiment Video

Updated: Sep 15, 2025

Cultivation of Green Microalgae in Bubble Column Photobioreactors and an Assay for Neutral Lipids
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Exploiting microalgal diversity for sterol production.

Omnia H Abdelkarim1,2, Rene H Wijffels1,3, Maria J Barbosa1

  • 1Bioprocess Engineering, AlgaePARC, Wageningen University, Wageningen, Netherlands.

Frontiers in Plant Science
|July 15, 2025
PubMed
Summary

Microalgae offer a sustainable alternative for sterol production, overcoming challenges associated with traditional sources. Advances in biotechnology can enhance microalgal sterol yields for pharmaceutical and nutraceutical applications.

Keywords:
biotechnological applicationenvironmental conditionsgenetic engineeringmicroalgaesterols production

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Area of Science:

  • Biotechnology
  • Marine Biology
  • Biochemistry

Background:

  • Sterols are vital for eukaryotic cell membranes and possess pharmaceutical benefits.
  • Traditional sterol sources (animal, plant, microbial) face sustainability and economic hurdles.
  • Microalgae present a promising, sustainable alternative due to rapid growth and diverse biochemistry.

Purpose of the Study:

  • To review the potential of microalgae for sterol production.
  • To highlight advantages and challenges of microalgal sterol sourcing.
  • To explore biotechnological strategies for enhancing sterol yields.

Main Methods:

  • Literature review focusing on microalgal sterol biosynthesis and cultivation.
  • Analysis of metabolic engineering and process optimization techniques.
  • Evaluation of species-specific variations and scalability factors.

Main Results:

  • Microalgae offer diverse sterol profiles and sustainable cultivation.
  • Key challenges include low yields, species variability, and industrial scalability.
  • Metabolic engineering and advanced cultivation show promise for increased production.

Conclusions:

  • Microalgae are a viable, sustainable source for sterols.
  • Biotechnological innovations are crucial for optimizing microalgal sterol production.
  • Potential applications span pharmaceutical, nutraceutical, and industrial sectors.