... A: 40%, 60%, 80% ,90%,95%,98% Stevia for foodstevia extract,stevioside Source:stevia leaf. Stevioside: 80%,90%, 95%, 98% Rebaudioside A: 40 ... %, 60%, 80% ,90%,95%,98%stevia extract,stevioside Source:stevia leaf. Stevioside: 80%,90%, 95%, 98% Rebaudioside A: 40 ...