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Related Concept Videos

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...
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Overview of Algae01:28

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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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Red Algae01:23

Red Algae

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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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Green Algae01:21

Green Algae

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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...
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Deleterious Substances in Aggregate01:25

Deleterious Substances in Aggregate

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Deleterious substances in aggregates can be detrimental to the quality and durability of concrete. These substances include organic impurities like loam, which interfere with cement hydration and are usually present in the sand. These prevent a good bond between aggregate and cement paste. Organic impurities can be detected using the colorimetric test, where the darkness of a solution after agitation indicates the level of organic content.
Another type of impurity is clay and fine material that...
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Substance Use Disorders Affecting Sleep01:24

Substance Use Disorders Affecting Sleep

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Substance use disorders involve a pattern of using drugs more extensively than intended and continuing use despite harmful consequences. This includes legal substances like alcohol and nicotine, as well as illegal drugs. These disorders often involve both physical and psychological dependence, reflecting compulsive use of substances that significantly alter thoughts, feelings, and behaviors, contributing to a major public health issue.
Understanding the concepts of physical dependence,...
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Photoprotective Substances Derived from Marine Algae.

Ratih Pangestuti1, Evi Amelia Siahaan2, Se-Kwon Kim3

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Marine algae produce unique bioactive compounds like mycosporine-like amino acids (MAAs) that offer natural photoprotection. These compounds show promise for skincare, cosmetics, and pharmaceuticals due to their UV-absorbing and antioxidant properties.

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Area of Science:

  • Marine Biology
  • Biotechnology
  • Cosmetic Science

Background:

  • Marine algae possess unique bioactive substances adapted to extreme environments.
  • These substances include mycosporine-like amino acids (MAAs), sulfated polysaccharides, carotenoids, and polyphenols.
  • Marine algal compounds exhibit photoprotective, antioxidant, and anti-aging properties.

Purpose of the Study:

  • To identify bioactive substances in marine algae.
  • To outline their photoprotective potential.
  • To review blue biotechnology advancements for obtaining these substances.

Main Methods:

  • Literature review of marine algal bioactive compounds.
  • Analysis of their photoprotective mechanisms.
  • Overview of blue biotechnology applications.

Main Results:

  • Marine algae are rich in UV-absorbing and antioxidant compounds.
  • Mycosporine-like amino acids (MAAs) are key photoprotective agents.
  • Marine algal derivatives show potential in skincare and pharmaceuticals.

Conclusions:

  • Marine algae offer a sustainable source of natural photoprotective agents.
  • Blue biotechnology can enhance the extraction and application of these compounds.
  • Further research can unlock novel applications in cosmetics and medicine.