Wednesday, February 22, 2012

N-acetylglucosamine, sugar, containing nitrogen as well.

Eukaryotic organisms such as algae, fungi and higher plants, in


multilayered cell walls consist mostly or


cellulose and chitin. Cellulose and chitin are polysaccharides


, ie they consist of many related molecules of sugar. Cellulose


glucose polymer containing only carbon, hydrogen and oxygen, while the chitin polymer


N-acetylglucosamine, sugar, containing nitrogen as well. Both cellulose and chitin are linear, unbranched polymers th


corresponding sugars, and several dozen of these polymers are collected in


large crystal type of cable is called mikrofibryl that coil around the cell


. Mikrofibryl cellulose form a scaffolding all walls of plant cells. At least two types


primary walls among species of flowering plants


(angiosperms). In type I walls


and some monocots mikrofibryl tied together sugar strattera side effects


called xyloglucans, and is it embedded in gel


pectin, another type of polysaccharide. Pectins install more


walls of physical characters, such as electric charge, density, porosity


,


enzymes and proteins and distribution from cell to cell adhesions.


Pectins used for commercial purposes thicken jellies and jams. Type II


walls of cereals and other monocots relatives cable >> << mikrofibryl with various sugars and relatively poor pectin. The hardness of the wood comes from



lignin, which is impregnated between mikrofibryl cellulose. Lignin is a phenolic compounds


, chemically related to benzene. Cell walls of fungi varied among taxonomic groups, but most contain chitin


mikrofibryl embedded in a matrix of polysaccharides and


covered easily cover the additional molecules combining sugars and peptides


(amino acid chains). However, the cell walls of Oomycetes


contain cellulose rather than chitin. Different groups of fungi can be


differ in part on the composition of their cell wall components. Cellulose is a significant part of the framework mikrofibrylyarnoyi


algae, although some contain other polysaccharides as well. These


mikrofibrylyarnoyi network embedded in a thick gel polysaccharides


huge variety. Three classes of algae, Chlorophyceae


(green), Rhodophyceae (red), and Phaeophyceae (brown) can be


differ somewhat depending on their constituent polysaccharides.


Alginic acid and fucans are in brown algae, while


agarose and carrageenan are predominantly in the red algae. Some of qi


polysaccharides used as thickening and stabilizing agents in various


food. .


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