Definition of hemicellulose
: any of various plant polysaccharides less complex than cellulose and easily hydrolyzable to monosaccharides and other products
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Recent Examples of hemicellulose from the Web
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Trees have two types of cellulose, called cellulose and hemicellulose, neither of which can be broken down by the same enzyme.
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Some lignin decomposes at around 900 degrees Celsius (~1,650 Fahrenheit), about 600 degrees higher than cellulose and hemicellulose; other lignin decomposes at temperatures below where cellulose comes apart.
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Heat can travel up and down the fibers with ease, but can't easily cross them, particularly because of the air gaps left after all the woody filler (lignin and hemicellulose) was removed.
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But for this project, Hu and his colleagues removed all of the lignin and most of the hemicellulose.
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These two chemicals work together to partially remove lignin and hemicellulose, two polymers that make the cell walls of plants rigid.
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The lignin, hemicellulose, and other polymers that give the wood structure break down to produce sweet, vanilla notes.
These example sentences are selected automatically from various online news sources to reflect current usage of the word 'hemicellulose.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.
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Learn More about hemicellulose
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Britannica.com: Encyclopedia article about hemicellulose
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