. Higher yields of coupling products were obtained using α-CD as donor, while more dispoportionation occurred with starch. Nearly 78% conversion of the acceptor substrate C12G1 into dodecyl glucooligosides could be achieved at 132 μg/ml of CGTase in 20 min, while 93% of C12G2 could be transformed into products at 17.6 μg/ml of enzyme in 120 min using soluble starch as donor substrate. .