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Related Concept Videos

Overview of Algae01:28

Overview of Algae

280
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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Red Algae01:23

Red Algae

217
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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Other Algae01:19

Other Algae

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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...
115
Green Algae01:21

Green Algae

248
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...
248

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Analysis of Fatty Acid Content and Composition in Microalgae
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Macroalgal Proteins: A Review.

Ronan O' Brien1,2, Maria Hayes1, Gary Sheldrake2

  • 1Department of Food BioSciences, Teagasc Food Research Centre, Ashtown, D15 DY05 Dublin, Ireland.

Foods (Basel, Switzerland)
|February 25, 2022
PubMed
Summary

Seaweed (macroalgae) offers a sustainable, protein-rich alternative to traditional sources. Advanced extraction methods yield valuable bioactive peptides with health benefits for food and feed applications.

Keywords:
ACE-1 inhibitionbioavailabilitycyclooxygenase enzymesdigestibilitydipeptidyl peptidase IVextraction methodshealthpeptidesseaweedtechno-functional ingredients

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Area of Science:

  • Marine Biotechnology
  • Food Science
  • Sustainable Agriculture

Background:

  • Growing global population necessitates novel protein sources.
  • Macroalgae (seaweeds) provide a sustainable protein alternative, cultivated without arable land.
  • Seaweeds are rich in protein and amino acids, surpassing many plant proteins.

Purpose of the Study:

  • To review protein extraction methods from macroalgae.
  • To explore the generation and applications of macroalgal proteins and bioactive peptides.
  • To highlight the health and techno-functional benefits of seaweed-derived ingredients.

Main Methods:

  • Review of 206 publications on seaweed utilization and protein extraction.
  • Discussion of physical, chemical, enzymatic, microwave-assisted, and ultrasound-assisted extraction techniques.
  • Analysis of bioactive peptides and their inhibitory enzyme activities (ACE-1, COX, etc.).

Main Results:

  • Macroalgal proteins are a viable alternative, rich in essential amino acids.
  • Bioactive peptides from seaweeds exhibit potential antihypertensive, antidiabetic, and anti-inflammatory properties.
  • Seaweed ingredients offer functional benefits in food formulation and health promotion.

Conclusions:

  • Macroalgae represent a significant, sustainable resource for protein extraction.
  • Advanced extraction technologies enhance the recovery of high-value compounds like bioactive peptides.
  • Seaweed proteins and peptides have diverse applications in human food, animal feed, and nutraceuticals.