Stevia, also known as Stevia rebaudiana Bertoni, is a bushy shrub that is part of the sunflower family. There are 150 species of stevia, all native to North and South America.
As stevia is 200 to 300 times sweeter than table sugar. It typically requires about 20 percent of the land and far less water to provide the same amount of sweetness as other mainstream sweeteners.
Stevia contains eight glycosides. These are the sweet components isolated and purified from the leaves of stevia. These glycosides include:
rebaudiosides A, C, D, E, and F
Stevioside and rebaudioside A (reb A) are the most plentiful of these components.
The term “stevia” will be used to refer to steviol glycosides and reb A throughout this article.
These are extracted through a process of harvesting the leaves, then drying, water extraction, and purification. Crude stevia, the processed product before it is purified, often carries a bitter taste and foul smell until it is bleached or decolored. It takes roughly 40 steps to process the final stevia extract.
Stevia leaves contain stevioside in a range of concentrations up to around 18 percent.
Fast facts on stevia
Stevia is primarily grown in Brazil, Paraguay, Japan, and China.
The natural sweetener tastes 200 to 300 times sweeter than table sugar.
Stevia can be classified as “zero-calorie,” because the calories per serving are so low.
It has shown potential health benefits as a healthful sugar alternative for people with diabetes.
Stevia and erythritol that have been approved for use in the United States (U.S.) and do not appear to pose any health risks when used in moderation.