The higher the SO2 concentration in the solvent mixture, the higher the
diffusivity, however ethanol concentration increased diffusivity up to a maximum and decreased it with further increase of ethanol
concentration. Diffusivities of 24:3 1011 and 12:3 1011 m2 s1 and mass transfer coefficients of 3:85 105 and 2:36 105
ms1 were obtained for extraction of anthocyanins at 40 C using 700 ppm SO2 and 67% ethanol, respectively.
2003 Elsevier Science Ltd. All rights reserved.
Keywo