Incorporation of hydroxycinnamaldehydes and hydroxybenzaldehydes into lignins
نویسندگان
چکیده
Hoon Kim, a,b John Ralph,* a,b Fachuang Lu, a,b Sally A. Ralph, c Alain-M. Boudett, d John J. MacKay, e Ronald R. Sederoff, f Takashi Ito, g Shingo Kawai, g Hideo Ohashi g and Takayoshi Higuchi h a US Dairy Forage Research Center, USDA Agricultural Research Service, Madison WI 53706. USA b Department of Forestry, University of Wisconsin, Madison, WI 53706-1598, USA c US Forest Product Laboratory, USDA-Forest Service, Madison, WI 53705, USA d UMR 5546 Pôle de Biotechnologie Végétale, 24 Chemin de Borde Rouge, BP17 Auzeville, F31326 Castanet Tolosan, France e Centre de Recherche en Biologie Forestière, Université Laval, Québec, Québec G1K 7P4, Canada f Department of Genetics, North Carolina State University, Raleigh, NC 27695, USA g Department of Applied Bioorganic Chemistry, Faculty ofAgriculture, Gifu University, 1-1 Yanagido, Gifu 501-1193, Japan h Professor Emeritus, Kyoto University, Kyoto 611-0011, Japan
منابع مشابه
NMR analysis of lignins in CAD-deficient plants. Part 1. Incorporation of hydroxycinnamaldehydes and hydroxybenzaldehydes into lignins.
Peroxidase/H2O2-mediated radical coupling of 4-hydroxycinnamaldehydes produces 8-O-4-, 8-5-, and 8-8-coupled dehydrodimers as has been documented earlier, as well as the 5-5-coupled dehydrodimer. The 8-5-dehydrodimer is however produced kinetically in its cyclic phenylcoumaran form at neutral pH. Synthetic polymers produced from mixtures of hydroxycinnamaldehydes and normal monolignols provide ...
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Modifying lignin composition and structure is a key strategy to increase plant cell wall digestibility for biofuel production. Disruption of the genes encoding both cinnamyl alcohol dehydrogenases (CADs), including CADC and CADD, in Arabidopsis thaliana results in the atypical incorporation of hydroxycinnamaldehydes into lignin. Another strategy to change lignin composition is downregulation or...
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