Stachyose
From Wikipedia, the free encyclopedia
| Stachyose | |
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| IUPAC name | (2R,3R,4S,5R,6R)-2-[(2S,3S,4S,5R)- 3,4-Dihydroxy-2,5-bis(hydroxymethyl) oxolan-2-yl]oxy-6-[ [(2S,3R,4S,5R,6R)-3,4,5-trihydroxy-6-[ [(2S,3R,4S,5S,6R)-3,4,5-trihydroxy-6- (hydroxymethyl)oxan-2-yl]oxymethyl] oxan-2-yl]oxymethyl]oxane-3,4,5-triol |
| Other names | β-D-Fructofuranosyl-O-α-D -galactopyranosyl-(1→6)-O-α-D -galactopyranosyl-(1→6)-α- D-glucopyranoside |
| Identifiers | |
| CAS number | [470-55-3] |
| PubChem | |
| EINECS number | |
| SMILES | C([C@@H]1[C@H]([C@@H]([C@H] ([C@H](O1)OC[C@@H]2[C@@H] ([C@@H]([C@H]([C@H](O2)O C[C@@H]3[C@@H]([C@@H]([C@H] ([C@H](O3)O[C@]4([C@H] ([C@@H]([C@H](O4)CO)O)O) CO)O)O)O)O)O)O)O)O)O)O |
| Properties | |
| Molecular formula | C24H42O21 |
| Molar mass | 666.578 g/mol |
| Except where noted otherwise, data are given for materials in their standard state (at 25 °C, 100 kPa) Infobox disclaimer and references |
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Stachyose is an tetrasaccharide consisting of two Dα-galactose units, one Dα-glucose unit, and one Dβ-fructose unit sequentially linked. Stachyose is naturally found in numerous vegetables (e.g. green beans, soybeans and other beans) and plants.
Stachyose is less sweet than sucrose, at about 28% on a weight basis. It is mainly used as a bulk sweetener or for its functional oligosaccharide property. Stachyose is not completely digestible by humans and delivers 1.5 to 2.4 kcal/g (6 to 10 kJ/g).
[edit] References
- Nakakuki, T. Present status and future of functional oligosaccharide development in Japan. Pure and Applied Chemistry 2002, 74, 1245-1251. Article
stachyose = galactose + raffinose
