Trisaccharides
Trisaccharides (outdated triple sugar ) are organic-chemical compounds from the group of carbohydrates . Trisaccharides are formally formed from three monosaccharide units ( simple sugars ) by splitting off water (two equivalents of water). The monosaccharide units are covalently linked in the trisaccharide via two glycosidic bonds . The trisaccharides belong to the group of oligosaccharides .
If at least one monosaccharide unit is not bound via its anomeric carbon atom, it is a reducing trisaccharide.
Surname | chemical compound | Function / occurrence |
---|---|---|
Fucosidolactose | O-α- D -Fuc p - (1 → 2) -O-β-α-Gal p - (1 → 4) - D -Gal p | in breast milk |
Gentianosis | O-β- D -Glc p - (1 → 6) -O-α- D -Glc p - (1 → 2) -β- D -Fru f | Rhizome of gentian species |
Isokestosis (1-kestosis) | O-α- D -Glc p - (1 → 2) -O-β- D -Fru f - (1 → 2) -β- D -Fru f | by the action of sucrose ( yeast ) on sucrose |
Kestosis (6-kestosis) | O-α- D -Glc p - (1 → 2) -O-β- D -Fru f - (6 → 2) -β- D -Fru f | by the action of sucrose on sucrose, honey |
Maltotriose | O-α- D -Glc p - (1 → 4) -O-α- D -Glc p - (1 → 4) - D -Glc p | Starch breakdown product , corn syrup |
Manninotriosis | O-α- D -Gal p - (1 → 6) -O-α- D -Gal p - (1 → 6) - D -Glc p | manna |
Melezitosis | O-α- D -Glc p - (1 → 3) -O-β- D -Fru f - (2 → 1) -α- D -Glc p | Manna, nectar |
Neokestosis | O-β- D -Fru f - (2 → 6) -O-α- D -Glc p - (1 → 2) -β- D -Fru f | Effect of sucrose on sucrose |
Panose | O-α- D -Glc p - (1 → 6) -O-α- D -Glc p - (1 → 4) - D -Glc p | Amylopectin breakdown product, honey |
Raffinose | O-α- D -Gal p - (1 → 6) -O-α- D -Glc p - (1 → 2) -β-d-Fru f | in sugar beet , sugar cane ; widely used in plants |
Umbelliferosis | O-α- D -Gal p - (1 → 2) -O-α- D -Glc p - (1 → 2) -β- D -Fru f | in roots of umbellifers |
literature
- Hans-Dieter Belitz , Werner Grosch , Peter Schieberle : Textbook of food chemistry . 6th completely revised edition. Springer, Berlin / Heidelberg 2008, ISBN 978-3-540-73201-3 , doi : 10.1007 / 978-3-540-73202-0 .
Web links
Individual evidence
- ^ Siegfried Hauptmann : Organic Chemistry , 2nd reviewed edition, VEB Deutscher Verlag für Grundstoffindindustrie, Leipzig 1985, ISBN 3-342-00280-8 , p. 649.