Growth mechanism of sucrose in pure solutions and in the presence of glucose and fructose

Investigations of the growth of sucrose single crystals (P2(1)) were conduc ted in pure solutions with 10% supersaturation at 22 and 50 degrees C and i n the presence of fructose and glucose. In the first 2-3 h, dissolution was observed at the positive end of the polar b-axis of the crystals in the ne gative direction, however, the growth rate was initially higher than during the later growth phase. These effects can be influenced by a DC electric f ield and by adding the above-mentioned monosaccharides. Potential calculati ons supported that specific adsorption as well as the adsorption of foreign molecules occurred on various crystal faces. (C) 2000 Elsevier Science B.V . All rights reserved.