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

Explain soybean protein isolates, Soybean protein isolates:  Soy protei...

Soybean protein isolates:  Soy protein isolates are the most pure and refined soy protein available.  Isolated soybean proteins (ISP), or  soybean protein isolates, are the mos

Protazoa, In what order did the four phyla of protazoa evolve and why in th...

In what order did the four phyla of protazoa evolve and why in this order?

Difference between adrenergic and cholinergic fibre, Difference between Adr...

Difference between Adrenergic and Cholinergic Fibre- S.NO .   1. ADRENERGI C FIBRE   Release nor adrenaline at their CHOLINE

Glycogenolysis, Glycogenolysis:   It is breakdown  of glycogen to glucose  ...

Glycogenolysis:   It is breakdown  of glycogen to glucose  by means  of the   reaction   series  shown  in figure 6.11 Like glycogenesis  it also  occurs in all  body  cells , But

Explain about the niacin (nicotinic acid) deficiency, Explain about the Nia...

Explain about the Niacin (nicotinic acid) deficiency? Niacin (nicotinic acid) deficiency classically results in pellagva, which is a chronic wasting disease associated with a c

Describe the frequency of low-risk coronary patients, Describe the Frequenc...

Describe the Frequency of low-risk coronary patients? For many low-risk coronary patients, particularly those following myocardial revascularization procedures, rehabilitation

Phylum protozoa, what are the classfication and members af phylum protozoa

what are the classfication and members af phylum protozoa

What are the frequencies of dominant and recessive allele, In a population ...

In a population of 200, 90 are homozygous dominant, 40 are heterozygotes, and 70 are homozygous recessive for a particular trait. What do you expect the frequencies of the dominant

Percussion - criteria for endosteal implants, Percussion - criteria for end...

Percussion - criteria for endosteal implants? It is neither an indicator of clinical health nor of rigid fixation. Ringing sound that occurs on percussion corresponds to the pr

Explain the bioavailability of folate, Explain the Bioavailability of Folat...

Explain the Bioavailability of Folate? Bioavailability of folate from naturally occurring food sources is variable and frequently incomplete, as mentioned earlier in the food

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