Stevia rebaudiana, a Versatile Food Ingredient: The Chemical Composition and Medicinal Properties

Table 1

The substituents of steviol glycosides.

Steviol glycoside	R1 constituent	R2 constituent
Dulcoside A	β-Glc	β-Glc-α- Rha(2 → 1)
Rebaudioside A	β-Glc	β-Glc-β-Glc(2→1)
		β-Glc(3→1)
Rebaudioside B	H	β-Glc-β-Glc(2→1)
		β-Glc(3→1)
Rebaudioside C	β-Glc	β-Glc-α-Rha(2→1)
		β-Glc(3→1)
Rebaudioside D	β-Glc-β-Glc(2 → 1)	β-Glc-β-Glc (2→1)
		β-Glc (3→1)
Rebaudioside E	β-Glc-β-Glc(2 → 1)	β-Glc-β-Glc(2 → 1)
Rebaudioside F	β-Glc	β-Glc-β-Xyl(2→1)
		β-Glc(3→1)
Stevioside	β-Glc	β-Glc-β-Glc (2 → 1)
Steviolbioside	H	β-Glc-β-Glc (2 → 1)
Steviol	H	H

Key: Glc: glucose; Rha: rhamnose; Xyl: xylose [2].