Tetrasaccharide

Chemical structure of stachyose

A tetrasaccharide is a carbohydrate which gives upon hydrolysis four molecules of the same or different monosaccharides. 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 tetrasaccharides
Name	chemical compound	function/occur
(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
	O-α-D-Glcp-(1→3)-O-α-D-Glcp-(1→3)-O-α-D-Glcp-(1→3)-D-Glcp
(β-D-Fructosyl-1-kestose)	O-α-D-Glcp-(1→2)-β-D-Fruf-(1→2)-β-D-Fruf-(1→2)-β-D-Fruf
	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)

References[]

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