Patent ID: 8211681

Claim:
A process for producing hydrogen from a polysaccharide or oligosaccharide, said process comprising: using synthetic enzymatic pathway(s) for: reducing the number of glucan units of the polysaccharide by converting at least one glucan unit to glucose-6-phosphate; oxidizing the glucose-6-phosphate and oxidized coenzyme NADP + or its analog to 12 moles reduced coenzyme NADPH or reduced analog and 6 moles CO 2 ; and converting the 12 moles reduced coenzyme NADPH or reduced analog to 12 moles H 2 and 12 moles oxidized coenzyme NADP + or oxidized analog; wherein the process uses a single reaction vessel or several cascade reactors; and wherein an H 2 yield of 48% of theoretical yield up to 100% of theoretical yield is obtained from conversion of each glucan unit.