“…A supplementary experiment was carried out under the selected optimal conditions and led to an experimental xanthan yield value of 43.35 g/l, which was very close to the one expected by the model (42.96 g/l). These yields were 50% higher than the ones obtained using date juice without CCOD application and those obtained in the literature using agro-industrial residues such as carob extract, 17 g/l (Roseiro, Costa, & Collaco, 1992); citrus waste, 14.5 g/l (Green, Shelef, & Bilanovic, 1994); olive-mill waste waters, 7 g/l (Lopez, Moreno, & Ramos-Cormenzana, 2001); ram horn hydrolysate, 25.6 g/l (Basaran-Kurbanoglu & Izzet-Kurbanoglu, 2007); and cheese whey, 26.35 g/l (Fernandez-Silva et al, 2009).…”