Search results
Results from the WOW.Com Content Network
Fructose (/ ˈ f r ʌ k t oʊ s,-oʊ z /), or fruit sugar, is a ketonic simple sugar found in many plants, where it is often bonded to glucose to form the disaccharide sucrose.It is one of the three dietary monosaccharides, along with glucose and galactose, that are absorbed by the gut directly into the blood of the portal vein during digestion.
The absence of fructokinase results in the inability to phosphorylate fructose to fructose-1-phosphate within the cell. As a result, fructose is neither trapped within the cell nor directed toward its metabolism. [11] Free fructose concentrations in the liver increase and fructose is free to leave the cell and enter plasma.
Cellulose is used in the cell walls of plants and other organisms and is said to be the most abundant organic molecule on Earth. [6] It has many uses such as a significant role in the paper and textile industries and is used as a feedstock for the production of rayon (via the viscose process), cellulose acetate, celluloid, and nitrocellulose.
Levan is a naturally occurring fructan present in many plants and microorganisms. [1] This polymer is made up of fructose , a monosaccharide sugar, connected by 2,6 beta glycosidic linkages . Levan can have both branched and linear structures of relatively low molecular weight. [ 2 ]
[3] [4] Cellulose is an important structural component of the primary cell wall of green plants, many forms of algae and the oomycetes. Some species of bacteria secrete it to form biofilms . [ 5 ] Cellulose is the most abundant organic polymer on Earth. [ 6 ]
A fructan is a polymer of fructose molecules. Fructans with a short chain length are known as fructooligosaccharides. Fructans can be found in over 12% of the angiosperms including both monocots and dicots [1] such as agave, artichokes, asparagus, leeks, garlic, onions (including spring onions), yacón, jícama, barley and wheat.
Also, 1-kestose has less than 50 fructose residues in the chain and is also called inulin type fructooligosaccharide. [2] Kestoses are categorized based on their structure into 3 main groups: 1-kestose, 6-kestose, neokestose. The most common of them is 1-kestose which is found in many plants. [3]
Hemicellulose dominates the middle lamella of the plant cell, unlike cellulose which is primarily found in the secondary layers. This allows for hemicellulose to provide middle-ground support for the cellulose on the outer layers of the plant cell.