الفهرس 
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Abstract
Stevia rebaudiana (Bertoni) is natural sweeteners which can substitute for sucrose have caught much interest due to the developing prevalence of obesity and diabetes. Steviol glycosides are a collection of intensely sweet compounds which have been extracted and purified from Stevia rebaudiana (Bertoni) to be used as a sweetener in food and beverages, steviol glycosides which might be liable for sweetness, stevioside and rebaudioside (A) are the most abundant in the Stevia plant, both flavor ≈200–three hundred times sweeter than sucrose. All steviol glycosides are diterpenoid glycosides that differ only by the presence of different number of glucose moiety.