NEW STEVIOL GLYCOSIDE, PRODUCTION THEREOF AND SWEETENER USING THE SAME GLYCOSIDE

摘要

NEW MATERIAL:A steviol glycoside having structure wherein the 2-position of beta-D-fructose is bonded to the 6-position of beta-glucosyl group linked by ester bond to COOH at the 19-position of rebaudioside A shown by formula I (gluc is glucosyl; fruc is fructosyl). USE:A low-calorie natural sweetener having improved degree of sweetness and qualities of rebaudioside A, especially improved qualities of sweetness such as bitterness, cutting of sharpness and mellowness. PREPARATION:An aqueous solution or a dispersion containing rebaudioside A shown by formula II and a beta-fructosylsaccharide compound is treated with a beta-fructofuranosyl transferase produced by Mycrobacterium sp H-1 (FERM P-11428) to give the rebaudioside glycoside. The degree of sweetness of the compound shown by formula II is about 245 times as much as that of sugar, is approximately twice as much as that of rebaudioside shown by formula III and better qualities of sweetness than the compound and a compound shown by formula I has much higher degree of sweetness and excellent qualities of sweetness.