What is the formula of stachyose?
What is the formula of stachyose?
C24H42O21Stachyose / Formula
What is stachyose made of?
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.
What are examples of Tetrasaccharides?
A tetrasaccharide is a carbohydrate which gives upon hydrolysis four molecules of the same or different monosaccharides….Tetrasaccharide.
| Name | chemical compound | function/occur |
|---|---|---|
| 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) |
What is meant by Stachyose?
Medical Definition of stachyose : a sweet crystalline tetrasaccharide sugar C24H42O21 that yields glucose, fructose, and galactose on hydrolysis.
Is Stachyose reducing or nonreducing?
Stachyose are non-reducing sugar. Non-reducing sugar does not reduce Fehling’s solution and Tollens reagent.
What is the formula of a trisaccharide?
a-Trisaccharide
| PubChem CID | 71587158 |
|---|---|
| Molecular Formula | C20H35NO15 |
| Synonyms | a-Trisaccharide 49777-13-1 UNII-P104QT2V1B P104QT2V1B Trisaccharide A More… |
| Molecular Weight | 529.5 |
| Dates | Modify 2021-12-18 Create 2013-07-08 |
What is raffinose and stachyose?
The raffinose family of oligosaccharides are α-galactosyl derivatives of sucrose. The most common are the trisaccharide raffinose (composed of galactose, fructose, and glucose) and the tetrasaccharide stachyose. These oligosaccharides are found in sugar beet molasses and whole grains.
Where is stachyose found?
Stachyose is a normal human metabolite present in human milk and is naturally found in many vegetables (e.g. green beans, soybeans and other beans) and plants. The glycosylation of serum transferrin from galactosemic patients with a deficiency of galactose-1-phosphate uridyl transferase (EC 2.
Is stachyose reducing or nonreducing?
Stachyose. Stachyose is a tetrasaccharide consisting of two D-galactose units, one D-glucose unit, and one D-fructose unit sequentially linked. Stachyose is a normal human metabolite present in human milk and is naturally found in many vegetables (e. g. green beans, soybeans and other beans) and plants.
Can Raffinose synthase be used to synthesize stachyose?
As raffinose synthase is unable to synthesize stachyose, a specific enzyme must exist in the plant source for the synthesis of this tetrasaccharide. The enzyme was isolated from several sources and found to catalyze the following reaction ( Dey, 1985; Holthaus & Schmitz, 1991 ): UDP-galactose does not act as galactosyl donor.
Is the transfer reaction of stachyose reversible?
Although the transfer reaction is freely reversible, the synthesis of stachyose is favored ( Dey, 1990 ). The enzyme is unable to synthesize raffinose, verbascose or higher homologous oligosaccharides that are generally found in the storage organs. The enzyme also catalyzes the following exchange reaction:
Are stachyose oligosaccharides frost-hardy?
In winter-hardy plants, stachyose and related oligosaccharides confer frost-hardiness; there is a seasonal variation of their pool size ( Kandler & Hopf, 1980 ). In C. pepo the export of these sugars from leaves is completely inhibited at 5°C.
