What Is Stevioside And Rebaudioside A
What is Stevioside and Rebaudioside A
Stevioside and Rebaudioside A are all stevia compound. Other stevia compounds are like Rebaudioside B, Rebaudioside C, Rebaudioside D, Rebaudioside F, Dulcoside A, Rubusoside and Steviolbioside which are also present in stevia.
What is stevioside?
Stevioside is a Stevio glycoside derived from the stevia plant, which can be used as a sweetener.
What is rebaudioside A?
Rebaudioside A (also called “Reb A”) is another Steviol glycoside that is 200 times sweeter than sugar. The glycoside contains only glucose (to the exclusion of other commonly found monosaccharides) as its monosaccharide moieties. It contains four glucose molecules in total.
Rebaudioside A Structure:
You’ll see that Rebaudioside A has a more glucose than stevioside in the structure.
Stevioside and Rebaudioside A are obtained from the leaves of Stevia rebaudiana Bertoni. The leaves are extracted with hot water and the aqueous extract is passed through an adsorption resin to trap and concentrate the component steviol glycosides. The resin is washed with a solvent alcohol to release the glycosides and product is recrystallized from methanol or aqueous ethanol. Ion exchange resins may be used in the purification process. The final product may be spray-dried.
Stevioside and Rebaudioside A Solubility
The solubility of Stevioside and Rebaudioside A in ethanol, water and their mixtures was studied. The results obtained are in accordance with technological applications of this solvent for Stevioside and Rebaudioside A separations. Rebaudioside A was poorly soluble in ethanol and water whilst Stevioside was poorly soluble in water.