TLC analysis of the reaction products of 90 nM GTFB incubated for 13 h in 50 mM sodium acetate buffer, pH 4.7, containing 1 mM CaCl2 with 25 mM sucrose or 25 mM maltooligosaccharides. St, standard; Suc, sucrose; G1, glucose; G2, maltose; G3, maltotriose; G4, maltotetraose; G5, maltopentaose; G6, maltohexaose; G7, maltoheptaose; Pol, polymer.