Fig. 1. Micrographs by scanning electron microscopy (SEM) of the support materials used for cells immobilization. Untreated corn cobs before (A) and after (B) the cells
immobilization; treated corn cobs before (C) and after (D) the cells immobilization. Untreated grape skins before (E) and after (F) the cells immobilization; treated grape
skins before (G) and after (H) the cells immobilization. Magnification: 700-fold.