Explain agar - algal polysaccharides, Biology

Assignment Help:

Agar

Agar is a polysaccharide found in the cell walls of some red algae and is unusual in containing sulfated galactose monomers. Certain marine algae of the class Rhodophyceae, called Red Sea weeds are the source of this polysaccharide. Some of the chief algal sources are Gelidium cartilagineum, Gracilaria conferroides and Pteroclaia capillcea. The structure and composition of the agar extract of Gelidium amansii showed that it is composed of two major fractions - agarose, a neutral polymer and agaropectin, a charged, sulfated galactan (Galactose, 3-6-anhydrogalactose). The ratios of these two polymers vary widely and the percentage of agarose in agar-bearing seaweeds ranges from 50% to 90%.  The composition of agar is discussed herewith along with the structure as shown in the figure.   

 

409_biology.png


Related Discussions:- Explain agar - algal polysaccharides

Define fuel molecules and lipogenesis, Define Fuel Molecules and Lipogenesi...

Define Fuel Molecules and Lipogenesis? Lipogenesis is a collective name for the complex process of producing lipids (fatty acids) from smaller precursor molecules. The synthesi

Amoeboid tapetum - tapetum, Amoeboid Tapetum - Tapetum It is also know...

Amoeboid Tapetum - Tapetum It is also known as invasive or periplus modial tapetum. This type of tapetum is more prevalent in the monocotyledons (Arum) than in the dicotyledon

Type of membrane is the cell membrane, Q. Concerning permeability what type...

Q. Concerning permeability what type of membrane is the cell membrane? The cell membrane is a selectively permeable membrane that is it allows the passage of water and some sel

How is the concept of chromosome related to the gene, How is the concept of...

How is the concept of chromosome related to the concept of the gene? A chromosome is a DNA molecule. A chromosome may have several dissimilar genes and also DNA portions tha

Medicines and drugs - impacts on biodiversity, Q. Medicines and Drugs - imp...

Q. Medicines and Drugs - impacts on biodiversity? The World Health Organization (WHO) has listed over 21,000 plant names (including synonyms) that have recorded medical uses ar

Show fruiting bodies present in a few fungi, Q What are the fruiting bodies...

Q What are the fruiting bodies present in a few fungi? Fruiting bodies are structures made of hyphae that project radially from the superior portion of the peduncle of a few fu

Of which main compounds is the mitochondrion structure made, Of which main ...

Of which main compounds is the mitochondrion structure made? Mitochondria are organelles delimited by two lipid membranes. The inner membrane invaginates to the interior of the

Aves, Flighting adaptations in birds

Flighting adaptations in birds

Protein synthesis with dna, Protein Synthesis with DNA The central dogm...

Protein Synthesis with DNA The central dogma of modern biochemistry is totally based on the coded information holded within deoxyribonucleic acid (DNA). Double stranded DNA is

Do algae reproduce sexually or asexually, Do algae reproduce sexually or as...

Do algae reproduce sexually or asexually? There are algae that replicate sexually and there are algae that replicate asexually. In unicellular algae reproduction is usually

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd