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Related Concept Videos

Other Algae01:19

Other Algae

421
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...
421
Overview of Algae01:28

Overview of Algae

753
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...
753
Red Algae01:23

Red Algae

796
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...
796
Green Algae01:21

Green Algae

753
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...
753
Alkali Metals03:06

Alkali Metals

24.2K
Group 1 elements are soft and shiny metallic solids. They are malleable, ductile, and good conductors of heat and electricity. The melting points of the alkali metals are unusually low for metals and decrease going down the group, while the density increases going down the group with the exception of potassium (Table 1).
Table 1: Properties of the alkali metals
24.2K
Bonding in Metals02:32

Bonding in Metals

52.1K
Metallic bonds are formed between two metal atoms. A simplified model to describe metallic bonding has been developed by Paul Drüde called the “Electron Sea Model”. 
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Molten-Salt Synthesis of Complex Metal Oxide Nanoparticles
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Algae-based metallic nanoparticles: Synthesis, characterization and applications.

Prerna Khanna1, Amrit Kaur1, Dinesh Goyal1

  • 1Department of Biotechnology, Thapar Institute of Engineering and Technology, Deemed University, Patiala 147 004, Punjab, India.

Journal of Microbiological Methods
|June 21, 2019
PubMed
Summary
This summary is machine-generated.

Algae offer a sustainable, green route for synthesizing metallic nanoparticles (NPs), crucial for a circular economy. These algae-derived NPs show promise as antimicrobial agents, reducing reliance on traditional antibiotics.

Keywords:
Nanoparticlesalgaegreen chemistrymicrobial synthesisphysicochemical properties

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Area of Science:

  • Green Chemistry and Nanotechnology
  • Biotechnology and Materials Science

Background:

  • Conventional nanomaterial synthesis poses environmental risks, necessitating eco-friendly alternatives.
  • Algae present a sustainable platform for nanoparticle production, aligning with circular economy principles.

Purpose of the Study:

  • To review algae-mediated biosynthesis of metallic nanoparticles (NPs).
  • To discuss the characterization and diverse applications of these algae-derived NPs.

Main Methods:

  • Utilizing various algae classes (Cyanophyceae, Chlorophyceae, Phaeophyceae, Rhodophyceae) for intracellular and extracellular NP synthesis.
  • Employing advanced spectroscopic, diffractographic, and microscopic techniques for NP characterization.

Main Results:

  • Algae efficiently synthesize gold (Au) and silver (Ag) nanoparticles using bioactive compounds as reductants.
  • Algae-derived NPs, particularly from Chlorella and Sargassum species, exhibit significant antimicrobial properties.

Conclusions:

  • Algae are effective nano-factories for producing diverse, biocompatible nanomaterials.
  • Algae-based nanoparticles offer a promising, environmentally sound alternative to conventional antibiotics and materials.