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

What is hydrogenqted fat, Q. What is Hydrogenqted Fat? All vanaspati pr...

Q. What is Hydrogenqted Fat? All vanaspati preparations are the result of hydrogenation of oils, where unsaturated fat is converted to saturated fat for its favour and long she

Hirudinea - feeding and digestion in annelids, Hirudinea - Feeding and Dige...

Hirudinea - Feeding and Digestion in Annelids Hirudinea involves free living and ectoparasitic leeches. Leeches are blood suckers. The digestive system contains a preoral cham

Classification of freshwater ecosystems, Classification of Freshwater Ecosy...

Classification of Freshwater Ecosystems Fresh water ecosystems depend on the terrestrial ecosystems for large quantities of organic and inorganic matter which are constantly a

What do you mean by insect control, Q. What do you mean by Insect control? ...

Q. What do you mean by Insect control? The insects can breed and hide in garbage and other places where there is availability of waste materials. The cockroach lives and breed

Vertebrates, i need examples of animals that belongs to vertevrate pisces

i need examples of animals that belongs to vertevrate pisces

Development of genetics-a historical perspect, DEVELOPMENT OF GENETICS-A HI...

DEVELOPMENT OF GENETICS-A HISTORICAL PERSPECT As systematic study of genetics began, answers were sought to questions such as i) why are we like our parents? ii) why do org

Poultry and duck diseases-ranikhet disease, Ranikhet disease Ranikhet ...

Ranikhet disease Ranikhet disease, also known in the west as Newcastle disease, is a contagious and highly fatal disease of fowls caused by a virus of the genus Rubulavirus in

Explain the importance of surgery, Explain the Importance of Surgery? W...

Explain the Importance of Surgery? Well, surgery is that branch of medical science which has for its object the cure of local injuries or diseases, as wounds or fractures, trau

Define intermediate level of the numeric pyramid, In the short term what wi...

In the short term what will happen to the levels above and below a population of secondary consumers of a numeric pyramid if a large number of individuals from this population dies

Lymph, why is it known as middle man

why is it known as middle man

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