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Stachyose

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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
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470-55-3 7pxY
ChEBI CHEBI:17164 7pxN
ChemSpider 388624 7pxN
EC number 207-427-3
Jmol-3D images Image
PubChem Template:Chembox PubChem/formatTemplate:Chembox PubChem/format
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C24H42O21
Molar mass 666.578 g/mol
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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Infobox references

Stachyose is a tetrasaccharide consisting of two α-D-galactose units, one α-D-glucose unit, and one β-D-fructose unit sequentially linked as gal(α1→6)gal(α1→6)glc(α1↔2β)fru. Together with related oligosaccharides such as raffinose, Stachyose occurs naturally in numerous vegetables (e.g. green beans, soybeans and other beans) and other 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 properties.[1] Stachyose is not completely digestible by humans and delivers 1.5 to 2.4 kcal/g (6 to 10 kJ/g).

References

  1. ^ Nakakuki, T. (2002). "Present status and future of functional oligosaccharide development in Japan" (PDF). Pure and Applied Chemistry 74 (7): 1245–1251. doi:10.1351/pac200274071245. 

External links