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What are some examples of pentosans?
Pentosans are a type of polysaccharide composed of pentose sugars. Common examples include xylan, found in the cell walls of plants, particularly in hardwoods and cereal grains, and arabinoxylan, which is prevalent in cereal grains like wheat and rye. Another example is pentosan polysulfate, a synthetic drug used in the treatment of interstitial cystitis. These compounds play significant roles in plant structure and have various applications in food and pharmaceutical industries.
What are examples of polysaccharides?
Examples of polysaccharides include starch, glycogen, cellulose, and chitin. Starch is found in plants and serves as a storage form of glucose. Glycogen is the storage form of glucose in animals. Cellulose is a structural component of plant cell walls, while chitin is found in the exoskeleton of arthropods and fungal cell walls.
What is hemicellulose?
Hemicellulose is a polysaccharide similar to cellulose but consisting of many different sugar building blocks (monomers) in shorter chains than cellulose. It is used as a flexible cell wall support in plants.-Cellulose is made of many repeating sugar units, as many as 15,000; but -hemicellulose is made of only about 500 to 3,000 sugar units.-There are many different kinds of hemicellulose found in plant cell walls. Primary cellular walls have predominatly xyloglucan. Other forms of hemicellulose include glucuronoxylan, arabinoxylan, glucomannan, and galactomannan which are found in primary and secondary plant cell walls.-These molecules are arranged in a less organized waythan regular cellulose and they tend to chemically break apart in acidic or basic conditions.-They are found abundantly in plant collenchyma cells. These cells have a support function, particularly in young plants. They allow the plant to have support but also be flexible, if bent over the plant (or part) can snap back up.-Higher levels of hemicellulose in animal feed is favoredbecause the animals will tend to eat less on their own.
