PROOF Copyright © The Chemical Society of Japan Chemistry Letters Vol.43, No.9 (2014) CL-140402 Elaboration of Titanium Oxide Nanocrystallites by Sol-Gel Method with Soluble-starch Stabilization and Coupling of Hydrothermal and Biological Extraction Afef Mehri and Hafedh Kochkar* TiO2 α-amylase or ‘’starch scissor ‘’ + EtOH + CO2 Glucose Yeast Fermentation Chem. Lett. 2014, 43 doi:10.1246/cl.140402