Enzymatic synthesis of piceid glycosides by cyclodextrin glucanotransferase

► CGTase from Bacillus macerans utilizes piceid as glycosyl acceptor to produce piceid glycosides with 2-15 glucose units, by transglycosylation reactions. ► α-Cyclodextrin and maltodextrin are efficient glycosyl donors. ► High transfer efficiencies obtained with α-cyclodextrin (78.9%) and maltodextrin (72.1%), respectively.