Tetrasaccharide

A tetrasaccharide is a carbohydrate which gives upon hydrolysis four molecules of the same or different monosaccharides.[1] For example, stachyose upon hydrolysis gives one molecule each of glucose and fructose and two molecules of galactose. The general formula of a tetrasaccharide is typically C₂₄H₄₂O₂₁.

Structure and occurrence of trisaccharides

Name	chemical compound	function/occur
Lychnose (1-α-Galactosyl-raffinose)	O-α-D-Galp-(1→6)-O-α-D-Glup-(1→2)-O-β-D-Fruf-(1→1)-O-α-D-Galp
Maltotetraose	O-α-D-Glcp-(1→4)-O-α-D-Glcp-(1→4)-O-α-D-Glcp-(1→4)-D-Glcp	in Starchsyrup
Nigerotetraose	O-α-D-Glcp-(1→3)-O-α-D-Glcp-(1→3)-O-α-D-Glcp-(1→3)-D-Glcp
Nystose (β-D-Fructosyl-1-kestose)	O-α-D-Glcp-(1→2)-β-D-Fruf-(1→2)-β-D-Fruf-(1→2)-β-D-Fruf
Sesamose	O-α-D-Galp-(1→6)-O-α-D-Galp-(1→6)-O-β-D-Fruf-(2→1)-O-α-D-Glcp
Stachyose	O-α-D-Galp-(1→6)-O-α-D-Galp-(1→6)-O-α-D-Glcp-(1→2)-β-D-Fruf	widespread in plants (artichoke, soybean)

Chemical structure of stachyose

References

1. "Tetrasaccharide overview". ScienceDirect. Retrieved 2020-01-02.