stevia extract,stevioside Source:stevia leaf. Stevioside: 80%,90%, 95%, 98% Rebaudioside A: 40%, 60%, 80% ,90%,95%,98% 1. stevia ectract , Stevioside(Total Glycoside ... improve flavour of original stevioside extensively. White or little yellow powder, flake or granule. To surmount various purity, low solution, bitterness ...