AMS was kindly supplied by Roquette Frères (France). The corresponding amylose and protein contents were 51.0 and 0.75 %, respectively, according to the provider. The average molar masses of amylose and amylopectin chains were in the ranges 10 5 -10 6 and 10 7 -10 Ethyl acetate and DMAc were dried on the preactivated molecular sieves for 24 h prior to be used. The molecular sieves activation is performed at 150 ° C for 24 h, under vacuum, in an oven. The other chemicals were used as received.