Glucosyl stevia composition

摘要

Glucosyl stevia compositions are prepared from steviol glycosides of Stevia rebaudiana Bertoni. The glucosylation was performed by cyclodextrin glucanotransferase using the starch as source of glucose residues. The short-chain glucosyl stevia compositions were purified to >95% content of total steviol glycosides. The compositions can be used as sweetness enhancers, flavor enhancers and sweeteners in foods, beverages, cosmetics and pharmaceuticals.

主权项

1. A process for producing a glucosyl stevia composition, comprising the steps of:
adding starch into water to form a starch suspension; adding a first hydrolyzing enzyme comprising a mixture of α-amylase and CGTase into the starch suspension and incubating for about 0.5 to 5 hours at about 70-90° C., resulting in a liquefied starch suspension; inactivating the α-amylase by low pH heat treatment; adding steviol glycosides into the liquefied starch suspension, resulting in a reaction mixture; and adding a transglucosylation enzyme into the reaction mixture and incubating for about 24-48 hours at about 65° C. to transglucosylate the steviol glycosides, resulting in a glucosyl stevia composition comprising steviol glycoside derivatives having one or more α-1,4-glucosyl residues.