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

Iron - mineral elements, IRON It is present in bread, potatoes, green v...

IRON It is present in bread, potatoes, green vegetables, especially spinach, lettuce, cocoa, raisins, red meat, liver, kidney, egg yolk etc. Iron is also available in the bo

Bacillus thirungiensis, What are the genes responsible for the toxic substa...

What are the genes responsible for the toxic substance in bt?

Explain infectious proteins, Infectious proteins are present in: 1.Gemin...

Infectious proteins are present in: 1.Gemini viruses 2.Prions 3.Viroids 4.Satellite viruses Prions

Evolution, Evolution can be explained as follows  1) The change in the ...

Evolution can be explained as follows  1) The change in the life over time by adaptation, over-reproduction, variation and differential survival/reproduction, a procedure refer

Absorption of food - zoology, ABSORPTIO N OF FOOD Absorption from Mo...

ABSORPTIO N OF FOOD Absorption from Mouth Here negligible tobacco, alkohal and some medicines as isoprenailne glycerol tri nitrite is absorbed. Absorptio n from Sto

Why does thermal inversion increases air pollution, Q. Why does thermal inv...

Q. Why does thermal inversion increases air pollution? What harm can thermal inversion cause to humans? The Thermal inversion confines at low altitude a layer of pollutants tha

Explain thalamus and hypothalamus, Q. Explain Thalamus and Hypothalamus ? ...

Q. Explain Thalamus and Hypothalamus ? Thalamus and Hypothalamus: The thalamus is situated in the forebrain at the uppermost part of the diencephalon (posterior part of the for

What are fossil fuels, Q. What are fossil fuels? The Fossil fuels like ...

Q. What are fossil fuels? The Fossil fuels like coal, oil and gas, form when organic material is preserved from the complete action of decomposers, generally buried deep and un

How can germs can be transmitted, How can germs can be transmitted Germ...

How can germs can be transmitted Germs can be transmitted many ways, including: Touching dirty hands; Changing dirty or contaminated cloths; Through contaminated water and f

What are the bacteria, Q. What are the bacteria? Bacteria are unicellul...

Q. What are the bacteria? Bacteria are unicellular and prokaryotic beings. Bacteria have simple organization they present an exterior cell wall, plasma membrane, circular DNA w

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