The proposed changes, which would go into effect in January 2014, are intended to generate $2 billion in incremental annual revenue for the Postal Service. Highlights of the new single-piece First-Class Mail pricing, effective Jan. 26, 2014 include: Letters (1 oz.) â 3-cent increase to 49 cents.
Molecular structure of stevioside. Steviol glycosides are the chemical compounds responsible for the sweet taste of the leaves of the South American plant Stevia rebaudiana (Asteraceae), and the main ingredients (or precursors) of many sweeteners marketed under the generic name stevia and several trade names.he acceptable daily intake (ADI) for steviol glycosides, expressed as steviol equivalents, has been established to be 4 mg/kg body weight/day.
1 The stevia plant has an enormous sweetening power. 2  The sweetness of stevia comes from its leaves which produce the steviol glycosides â the natural sweeteners of the plant. 3  These steviol glycosides differ in their molecular structure, their sweetening power and their taste. The sweet taste of the plant is mainly produced by stevioside and Rebaudioside A. As stevioside is the largest part of the steviol glycosides in the plant, stevia leaf extracts are sometimes mistakenly called stevioside.