Stachyose is the glucose group side of sucrose, which is bound to two by 1,6-glycosidic bondsα-The sugar formed by galactose has the molecular formula c24h42o21. The pure product is white powder, slightly sweet, and the sweetness is 22% of sucrose. It tastes fresh and has no peculiar smell.Soluble in water, insoluble in ether, ethanol and other organic solvents.
Stachyose has good thermal stability and will not decompose at high temperature of 100 ℃, but its thermal stability decreases under acid conditions. Therefore, stachyose can be used in foods requiring hot pressing treatment.The storage stability in acidic environment is related to temperature, which is quite stable when the temperature is lower than 20 ℃.The moisture retention and hygroscopicity were less than that of sucrose, but higher than that of sucroseHigh fructose syrupThe osmotic pressure is close to sucrose.Above 80 ℃, stachyose has colorability and can be added to baked food to make the food appear attractive burnt yellow.
Chinese name
Stachyose
Foreign name
Stachyos
chemical formula
C24H42O21
molecular weight
666.59
CAS login number
470-55-3
EINECS login number
207-427-3
Melting point
170 ℃
Boiling point
1044.2 ℃
Water solubility
Soluble
Density
1.84 g/cm³
Flash point
585.3 ℃
Security description
S22
molecular structure
Galactose galactose glucose fructose
Refractive index
133 ° (C=5, H2O)
Physical and chemical properties
1. Melting point: 170 ℃
2. Boiling point: 1044.2 ℃
3. Flash point: 585.3 ℃
4. Density: 1.84g/cm3
5. Refractive index: 1.689
application area
1. It can be added to liquid food, such as lactic acid beverage, vinegar beverage, beer and other beverages to develop a new type of functional food, and the addition amount is small, the effect is remarkable, and the flavor of the original food will not be damaged.
2. It has active factors, which can adsorb gastrointestinal toxic substances and pathogens, improve the body's disease resistance and enhance immune ability. Therefore, it can be widely used in medicine.
3. When added to baked food, it can maintain moisture and change the rheological properties of dough.
4, stachyose is not hydrolyzed by digestive enzymes, and metabolism does not depend on insulin, which can meet the needs of special populations such as diabetes, obesity and hyperlipidemia.
5. Stachyose can promote the absorption of calcium and magnesium by human body, and can be used as an ideal raw material for developing food for pregnant women and the elderly.
