Trisaccharide
Trisaccharide
Trisaccharide (pronunciation: /triːˈsækəˌraɪd/) is a type of carbohydrate that consists of three monosaccharide units joined together. The term is derived from the Greek words "tri" meaning three, and "saccharide" meaning sugar.
Etymology
The term "Trisaccharide" is derived from the Greek words "tri" meaning three, and "saccharide" meaning sugar. The term was first used in the late 19th century to describe carbohydrates that are composed of three monosaccharide units.
Structure
A trisaccharide is formed when three monosaccharide molecules are joined together by glycosidic linkage. This process involves the elimination of a water molecule and the formation of an oxygen bridge between the two sugar molecules. The type of glycosidic linkage and the arrangement of the monosaccharide units can vary, leading to different types of trisaccharides.
Types of Trisaccharides
There are several types of trisaccharides, including Raffinose, Maltotriose, and Gentianose. Each of these trisaccharides is composed of different types of monosaccharides and has unique properties and functions.
- Raffinose is a trisaccharide composed of galactose, glucose, and fructose. It is commonly found in beans, cabbage, and whole grains.
- Maltotriose is a trisaccharide composed of three glucose units. It is a product of starch digestion and is found in malted grains.
- Gentianose is a trisaccharide composed of two glucose units and one fructose unit. It is found in the roots of the gentian plant.
Functions
Trisaccharides play various roles in biological systems. They serve as energy sources, structural components, and signaling molecules. They are also involved in various biological processes such as cell recognition and immune response.
Related Terms
External links
- Medical encyclopedia article on Trisaccharide
- Wikipedia's article - Trisaccharide
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