Glycosides from Stevia extract

There are many patents and journal articles that describe processes to produce the principal sweet diterpene glycosides stevioside and in particular, rebaudioside A. Many of the reported methods of production require the use of ion exchange columns or gases and are not satisfactory if the scale-up to commercial quantities are required. Most methods for extraction and purification of the sweet diterpene glycosides from Stevia use complicated processing of the crude extracts. Generally, the recovery processes of the principal two diterpene glycosides stevioside and rebaudioside A involve ... 

Dobberstein RH, Ahmed MS, Extraction, separation and recovery of diterpene glycosides from Stevia rebauAiana plants. US Patent No. 4,361,697, 1982. 

Stevia sweeteners are extracted from the leaves of Stevia rebaudiana Bertoni (Compositae), an herb native to Paraguay but cultivated in Southeast Asia, Japan, Paraguay, Brazil, Israel, and the United States. The sweet constituents of stevia include eight diterpene glycosides stevioside, ste-violbioside, rebaudiosides A, B, C, D, E, and dulcoside A, which collectively are 100-300 times... 

Stevia is a commercial name for em artificied sweetener and is also the common name for the plant that it is extracted from. Steviol is the basic structure of this class of sweetener, but when sugar molecules are attached to steviol (making it steviol glycoside) its sweetness skyrockets to hundreds of times that of regular sugar. This sweetener has been in use for centuries in South and Central America and in Japan since the 1970s. In the United States, it s only been available for a few years as a purified compound (marketed under the name Truvia ) raw plant extracts of the stevia plant are not approved for use in the United States. 

Stevioside or stevia [XI] is the name given to a group of sweet diterpene glycosides extracted from the leaves of Stevia Rebaudiana plant (native of South America). Steviosides show good stability in the solid form. They are also quite stable in acidic condition beverages at 22°C. Steviosides are approved for food use in several South American and Asian countries, but lack approval in Europe and North America. 

Truvia is a natural sweetener from the stevia plant composed of different sweet and bitter glycosides, extracted from leaves but with fermentation processes in development (see Section 27.3.2). 

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