نتایج جستجو برای: lignins
تعداد نتایج: 729 فیلتر نتایج به سال:
Lignin is a complex polyphenolic constituent of plant secondary cell walls. Inspired largely by the recalcitrance of lignin to biomass processing, plant engineering efforts have routinely sought to alter lignin quantity, composition, and structure by exploiting the inherent plasticity of lignin biosynthesis. More recently, researchers are attempting to strategically design plants for increased ...
Lignins play a crucial role in the cell-wall architecture of all vascular plants. They are composed of p-hydroxyphenylpropanoid units interconnected through covalent bonds formed during lignol radical coupling between six different pairs of atomic centers. For 50years, the primary structures of lignins have been thought to be random, but for a number of reasons such an assumption is not tenable...
Despite evidence that lignin associates under both aqueous and organic media, the magnitude and nature of the underlying driving forces are still a matter of discussion. The present paper addresses this issue by examining both solution properties and size exclusion behaviour of lignins isolated from five different species of softwoods, as well as from the angiosperms Eucalyptus globulus and whe...
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 Laborator...
Lignin valorisation towards added-value products has become a relevant topic to consolidate future circular bioeconomy. In this context lignin oxidation C4 dicarboxylic acids (C4-DCA) by catalytic wet peroxide is emerging as value-added strategy, supported the extensive use of these building blocks in several industrial fields. work, lignins from different sources and processes (Indulin AT, Lig...
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