low caloric sweeteners have been investigated to substitute sugar as an advantage for both nutritional and medicinal purpose. these sugar substitutes are interesting particularly for concepts marketed under a natural claim. among these, stevia rebaudiana is a small shrub; its leaves are used as a sweetener. serial dilution of the hot water crude extract of s. rebaudiana leaves and aqueous solut...

Stevia rebaudiana, a perennial herb from the Asteraceae family, is known to the scientific world for its sweetness and steviol glycosides (SGs). SGs are the secondary metabolites responsible for the sweetness of Stevia. They are synthesized by SG biosynthesis pathway operating in the leaves. Most of the genes encoding the enzymes of this pathway have been cloned and characterized from Stevia. O...