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

The intine layer, The Intine Layer As soon as the tetrads release the ...

The Intine Layer As soon as the tetrads release the microspores, the inner layer of the pollen wall (intine) is formed. Proteinaceous lamellae are embedded in the matrix of th

Define consistency and texture - dysphilgia, Define Consistency and Texture...

Define Consistency and Texture - Dysphilgia? Aspiration of liquids, including water, into the lungs can result in complications. To avoid this problem and yet fulfilling the fl

Agro industrial-nutritive value of crop residues, Nutritive value of crop r...

Nutritive value of crop residues Nutritive value is generally determined by feed composition, intake and utilization  efficiency of digested matter. Thus, the value of a feed

Explain the storage of vitamin a, Explain the Storage of vitamin A? The...

Explain the Storage of vitamin A? The primary organ for storage of vitamin A is the liver. Reserves are found in the stellate cells, as mentioned above. The average liver weigh

Sulphur (s) - macronutrients, Sulphur (S) - Macronutrients Sulphur is ...

Sulphur (S) - Macronutrients Sulphur is present in the soil in inorganic and organic forms. In most soils organically bounds is the major S reservoir. The inorganic forms of S

Alcoholism, ALCOHOLISM - Continual heavy consuming of alcohol is cal...

ALCOHOLISM - Continual heavy consuming of alcohol is called alcoholism or drinking . Word alcohol is refered to C 2 H 5 OH or ethyl alcohol or ethanol or grain alcohol.

Explain the dietary modifications - obesity, Explain the Dietary Modificati...

Explain the Dietary Modifications - Obesity? The dietary modifications serve as a guide for the obese to make healthy food choices. The first step towards prescribing a diet fo

What is orthopedic, Orthopedic Prophylactic antistaphylococcal drugs ad...

Orthopedic Prophylactic antistaphylococcal drugs administered preoperatively can decrease the incidence of both early and late infection following joint replacement. They also

Homologous proteins - amino acid sequence in fasta format, Please answer th...

Please answer the following question on Sequence Y: Protein databases 1. What sequence from which organism is this sequence most similar to? 2. Can you find any homo

What are plasmids, What are plasmids? The Plasmids are circular DNA mol...

What are plasmids? The Plasmids are circular DNA molecules present in the genetic material of some bacteria. They may perhaps contain genes responsible for bacterial resistance

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