title: Bio-mimetic hydrogen production from polysaccharide using the visible light sensitization of zinc porphyrin.
abstract: A biohydrogen production system coupling the polysaccharide such as sucrose and maltose degradation with invertase and glucose dehydrognase (GDH) and hydrogen production with colloidal platinum as hydrogen-evolved catalyst using the visible light-induced photosensitization of water-soluble zinc porphyrin, zinc tetraphenylporphyrin tetrasulfonate (ZnTPPS) has been investigated. Continuous hydrogen gas production was observed when the sample solution containing polysaccharide, invertase, GDH, nicotinamide adenine dinucreotide (NAD(+)), ZnTPPS, methylviologen (an electron relay reagent), and colloidal platinum was irradiated by visible light. After 240-min irradiation, the amount of hydrogen production in the system using sucrose and maltose was estimated to be 3.1 and 0.35 micromol, respectively.
authors.affiliation: Department of Applied Chemistry, Oita University, Dannoharu 700, Oita 870-1192, Japan.
authors.forename: Yoshinobu
authors.initials: Y
authors.lastname: Saiki
authors.forename: Yutaka
authors.initials: Y
authors.lastname: Amao
mesh_terms: D032701:Biomimetics / Q000379:methods*; D002384:Catalysis / Q000528:radiation effects; D042843:Glucose 1-Dehydrogenase / Q000737:chemistry; D006859:Hydrogen / Q000737:chemistry* / Q000302:isolation & purification; D008027:Light; D008320:Maltose / Q000737:chemistry; D008665:Metalloporphyrins / Q000737:chemistry* / Q000528:radiation effects*; D009243:NAD / Q000737:chemistry; D010269:Paraquat / Q000737:chemistry*; D010777:Photochemistry; D017319:Photosensitizing Agents / Q000737:chemistry; D010984:Platinum / Q000737:chemistry; D011134:Polysaccharides / Q000737:chemistry*; D013395:Sucrose / Q000737:chemistry; D043324:beta-Fructofuranosidase / Q000737:chemistry
chemical_list: D008665:Metalloporphyrins; D017319:Photosensitizing Agents; D011134:Polysaccharides; D009243:NAD; C017802:zinc hematoporphyrin; D010984:Platinum; D013395:Sucrose; D008320:Maltose; D006859:Hydrogen; D042843:Glucose 1-Dehydrogenase; D043324:beta-Fructofuranosidase; D010269:Paraquat