Dulcoside A is one of the associated glycosides found in the stevia plant. It is generally present in preparations of Steviol glycosides at levels lower than stevioside or Rebaudioside A.
Rebaudioside A is one of the two major Steviol glycosides present in the Stevia leaf and is best known for its clean, sweet taste.Its sweetness intensity is around 200 times that of sugar, but will vary depending on the food or beverage in which it is used. Furthermore, it is very stable under a full spectrum of pH levels, heat and light, all conditions that are found in foods and food preparation.
Rebaudioside B is one of the associated glycosides found in the stevia plant. It is generally present in preparations of Steviol glycosides at levels lower than stevioside or Rebaudioside A.
Rebaudioside C is one of the associated glycosides found in the stevia plant. It is generally present in preparations of Steviol glycosides at levels lower than stevioside or Rebaudioside A.
Rebaudioside D is one of the associated glycosides found in the stevia plant. It is generally present in preparations of Steviol glycosides at levels lower than stevioside or Rebaudioside A.
Rebaudioside E is one of the associated glycosides found in the stevia plant. It is generally present in preparations of Steviol glycosides at levels lower than stevioside or Rebaudioside A.
Rebaudioside F is one of the associated glycosides found in the stevia plant. It is generally present in preparations of Steviol glycosides at levels lower than stevioside or Rebaudioside A.
Rubusoside is one of the associated glycosides found in the stevia plant. It is generally present in preparations of Steviol glycosides at levels lower than stevioside or Rebaudioside A.
Steviol (R1 = R2 = H) is the aglycone of the Steviol glycosides.
The Steviol glycosides like the majority of other known molecules have a CAS number. This is a unique, sequential identifier number generated by the Chemical Abstracts Service (CAS).
The CAS numbers for the two main Steviol glycosides:
This refers to the formula that describes the chemical composition of the Steviol glycoside molecules.
In a standardized format, the atoms are listed followed by a number indicating the total number of those particular atoms in the molecule. For example the chemical formula for stevioside is: C38H60O18, whereas the chemical formula for Rebaudioside A is: C44H70O23, reflecting the fact that Rebaudioside A contains one more glucose molecule (C6H12O6) that is connected by an ester bond (loss of water H2O in the process).
The chemical formula does not contain information about the chemical structure.
Steviol glycosides is the name given to a particular class of glycosylated diterpenes that have a Steviol backbone and either combinations of glucose alone or glucose and rhamnose or xylose attached via an ester linkage. The diterpene known as Steviol is the aglycone of Stevia's sweet glycosides.
This refers to the weight of a mole of an individual Steviol glycoside based on its chemical formula. For example, stevioside has the chemical formula C38H60O18, and therefore knowing the molar masses of each of the atoms listed and the numbers of each of the atoms in the molecule, the mole weight is 804.87, whereas Rebaudioside A, with a chemical formula of C44H70O23, has a mole weight of 967.01.
Representations of the chemical formulae, but with known bond positions and other spatial information depicted. The structural formula of the Steviol backbone and the types of additional sugar moieties for each of the Steviol glycosides is shown below (from Journal of Applied Glycoscience, Vol. 57 (2010), No. 3, pp.199-209):
| Name | R1 | R2 |
|---|---|---|
Stevioside | Glcβ1- | Glcβ1-2 Glcβ1- |
Rebaudioside A | Glcβ1- | Glcβ1-2(Glcβ1-3)Glcβ1- |
Rebaudioside B | H- | Glcβ1-2(Glcβ1-3)Glcβ1- |
Rebaudioside C | Glcβ1- | Rhaα1-2(Glcβ1-3)Glcβ1- |
Rebaudioside D | Glcβ1-2Glcβ1- | Glcβ1-2(Glcβ1-3)Glcβ1- |
Rebaudioside E | Glcβ1-2Glcβ1- | Glcβ1-2Glcβ1- |
| Rebaudioside F | Glcβ1- | Xylβ1-2(Glcβ1-3)Glcβ1 |
Dulcoside A | Glcβ1 | Rhaα1-2Glcβ1- |
Rubusoside | Glcβ1- | Glcβ1- |
Steviolbioside | H- | Glcβ1-2Glcβ1- |
Glc, Rha and Xyl represent, respectively, glucose, rhamnose and xylose sugar moieties.
Steviolbioside is one of the associated glycosides found in the stevia plant. It is generally present in preparations of Steviol glycosides at levels lower than stevioside or Rebaudioside A.
Stevioside is one of the Steviol glycosides found in the Stevia plant and is of principal interest for its sweetening property.
