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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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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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Purposive Learning01:22

Purposive Learning

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E. C. Tolman emphasized the purposiveness of behavior — the idea that much of our behavior is goal-directed. For instance, employees who aim for a promotion work diligently to meet their targets. Tolman argued that when classical conditioning and operant conditioning occur, the organism acquires certain expectations. In classical conditioning, a child might fear a dog because they expect it to bite. In operant conditioning, a person might consistently work overtime because they expect a...
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Red Algae01:23

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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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Purpose of Health Records I

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Related Experiment Video

Updated: Jan 20, 2026

A Multi-Omics Extraction Method for the In-Depth Analysis of Synchronized Cultures of the Green Alga Chlamydomonas reinhardtii
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Arsenosugar standards extracted from algae: Isolation, characterization and use for identification and quantification

Yanli Yu1, Anna Vivó Navarro2, Àngels Sahuquillo2

  • 1School of Chemistry and Chemical Engineering, Southwest University. Chongqing, China; Analytical Chemistry Section, Faculty of Chemistry, University of Barcelona, Barcelona, Spain.

Journal of Chromatography. A
|August 26, 2019
PubMed
Summary

Researchers developed methods to isolate and identify sulfate and sulfonate arsenosugars in edible algae. These findings aid in understanding arsenic speciation in seafood, crucial for food safety assessments.

Keywords:
AlgaeArsenic speciationArsenosugar standardsIC-ICP-MS, ESI-TOF/MSPreparative chromatography

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Qualitative Characterization of the Aqueous Fraction from Hydrothermal Liquefaction of Algae Using 2D Gas Chromatography with Time-of-flight Mass Spectrometry
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Pyrosequencing for Microbial Identification and Characterization
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Pyrosequencing for Microbial Identification and Characterization
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Area of Science:

  • Environmental Chemistry
  • Analytical Chemistry
  • Marine Biology

Background:

  • Arsenosugars are significant arsenic metabolites found in marine organisms.
  • Accurate quantification of specific arsenosugars is essential for risk assessment.

Purpose of the Study:

  • To prepare standard solutions of sulfate (SO4-sug) and sulfonate (SO3-sug) arsenosugars.
  • To identify and quantify these arsenosugars in edible algae.

Main Methods:

  • Preparative liquid chromatography for isolating arsenosugar standards.
  • Ion chromatography-inductively coupled plasma-mass spectrometry (IC-ICP-MS) for arsenic speciation.
  • High-resolution mass spectrometry (ESI-TOF/MS) for compound confirmation.

Main Results:

  • Successfully isolated and confirmed sulfate and sulfonate arsenosugar standards.
  • Quantified SO3-sug in edible algae (5-36 mg As kg-1) and SO4-sug in Fucus (9.3 mg As kg-1).
  • Total arsenic levels in algae ranged from 34-57 mg kg-1.

Conclusions:

  • Developed reliable methods for arsenosugar analysis in algae.
  • Demonstrated the presence and levels of specific arsenosugars in commercially available algae.
  • Contributes to accurate dietary exposure assessment of arsenic from seafood.