单词	hemicellulose
释义	hemicellulose noun hemi·​cel·​lu·​lose ˌhe-mi-ˈsel-yə-ˌlōs  -ˌlōz : any of various plant polysaccharides less complex than cellulose and easily hydrolyzable to monosaccharides and other products Example Sentences Recent Examples on the Web Trees have two types of cellulose, called cellulose and hemicellulose, neither of which can be broken down by the same enzyme. Chris Lee, Ars Technica, 5 Apr. 2018 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. Chris Lee, Ars Technica, 5 Apr. 2018 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. Amina Khan, latimes.com, 10 Mar. 2018 But for this project, Hu and his colleagues removed all of the lignin and most of the hemicellulose. Amina Khan, latimes.com, 10 Mar. 2018 These two chemicals work together to partially remove lignin and hemicellulose, two polymers that make the cell walls of plants rigid. Marissa Fessenden, Smithsonian, 10 Feb. 2018 The lignin, hemicellulose, and other polymers that give the wood structure break down to produce sweet, vanilla notes. Wayne Curtis, WIRED, 30 May 2017 See More Word History Etymology International Scientific Vocabulary First Known Use 1891, in the meaning defined above Medical Definition hemicellulose noun hemi·​cel·​lu·​lose ˌhem-i-ˈsel-yə-ˌlōs, -ˌlōz  : any of various plant polysaccharides less complex than cellulose and easily hydrolyzable to simple sugars and other products
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