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hemicellulose

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bagasse

Overview page. Subjects: Medicine and Health.

The residues from sugar-cane milling, consisting of the crushed stalks from which the juice has been expressed; it consists of 50% cellulose, 25% hemicelluloses, and 25% lignin. It is used...

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cell plate

Overview page. Subjects: Biological Sciences.

The structure that forms in a dividing plant cell at the end of mitosis; it separates the cytoplasm of the two daughter protoplasts. The cell plate is formed from vesicles made by...

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cell wall

Overview page. Subjects: Plant Sciences and Forestry.

A rigid structure secreted external to the plasma membrane. In plants it contains cellulose and lignin; in fungi it contains chitin; and in bacteria it contains peptidoglycans.

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holocellulose

Overview page. Subjects: Medicine and Health — Chemistry.

The complex mixture of polysaccharides remaining after the removal of lignin from tree‐wood by treatment with sodium chlorite solution. It consists of a mixture of cellulose and...

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mannan

Overview page. Subjects: Biological Sciences — Chemistry.

A polysaccharide, composed mostly of glycosidically linked mannose units, that act as storage polymers in some species and perform a structural role in others. A great range of linkage has...

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peat

Overview page. Subjects: Biological Sciences.

A mass of dark-brown or black fibrous plant debris produced by the partial disintegration of vegetation in wet places (see hydrosere). It may accumulate in depressions. When subjected to...

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structural polysaccharide

Overview page. Subjects: Chemistry.

Any polysaccharide of plant cell walls that performs a structural function. There are three solubility classes: pectins, extractable with dilute acid; hemicelluloses, extractable with...

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xylan

Overview page. Subjects: Medicine and Health — Plant Sciences and Forestry.

A polysaccharide containing xylose that is commonly found in the cell walls of higher plants. The molecules consist of a backbone of beta-xylose units linked between the first and fourth...

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xyloglucans

Overview page. Subjects: Medicine and Health.

A constituent of hemicellulose, consisting of short chains of glucose polymers linked β1→4 (as in cellulose), with d‐xylose or short chains of xylose, galactose, and fructose linked to...

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