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@ARTICLE{Weidener:884209,
      author       = {Weidener, Dennis and Dama, Murali and Dietrich, Sabine and
                      Ohrem, Benedict and Pauly, Markus and Leitner, Walter and
                      Domínguez de María, Pablo and Grande, Philipp M. and
                      Klose, Holger},
      title        = {{M}ultiscale analysis of lignocellulose recalcitrance
                      towards {O}rgano{C}at pretreatment and fractionation},
      journal      = {Biotechnology for biofuels},
      volume       = {13},
      number       = {1},
      issn         = {1754-6834},
      address      = {London},
      publisher    = {BioMed Central},
      reportid     = {FZJ-2020-03122},
      pages        = {155},
      year         = {2020},
      abstract     = {BackgroundBiomass recalcitrance towards pretreatment and
                      further processing can be related to the compositional and
                      structural features of the biomass. However, the exact role
                      and relative importance to those structural attributes has
                      still to be further evaluated. Herein, ten different types
                      of biomass currently considered to be important raw
                      materials for biorefineries were chosen to be processed by
                      the recently developed, acid-catalyzed OrganoCat
                      pretreatment to produce cellulose-enriched pulp, sugars, and
                      lignin with different amounts and qualities. Using wet
                      chemistry analysis and NMR spectroscopy, the generic factors
                      of lignocellulose recalcitrance towards OrganoCat were
                      determined.ResultsThe different materials were processed
                      applying different conditions (e.g., type of acid catalyst
                      and temperature), and fractions with different qualities
                      were obtained. Raw materials and products were characterized
                      in terms of their compositional and structural features. For
                      the first time, generic correlation coefficients were
                      calculated between the measured chemical and structural
                      features and the different OrganoCat product yields and
                      qualities. Especially lignin-related factors displayed a
                      detrimental role for enzymatic pulp hydrolysis, as well as
                      sugar and lignin yield exhibiting inverse correlation
                      coefficients. Hemicellulose appeared to have less impact,
                      not being as detrimental as lignin factors, but
                      xylan-O-acetylation was inversely correlated with product
                      yield and qualities.ConclusionThese results illustrate the
                      role of generic features of lignocellulosic recalcitrance
                      towards acidic pretreatments and fractionation, exemplified
                      in the OrganoCat strategy. Discriminating between types of
                      lignocellulosic biomass and highlighting important
                      compositional variables, the improved understanding of how
                      these parameters affect OrganoCat products will ameliorate
                      bioeconomic concepts from agricultural production to
                      chemical products. Herein, a methodological approach is
                      proposed.},
      cin          = {IBG-2},
      ddc          = {660},
      cid          = {I:(DE-Juel1)IBG-2-20101118},
      pnm          = {582 - Plant Science (POF3-582)},
      pid          = {G:(DE-HGF)POF3-582},
      typ          = {PUB:(DE-HGF)16},
      pubmed       = {32944071},
      UT           = {WOS:000568430300001},
      doi          = {10.1186/s13068-020-01796-8},
      url          = {https://juser.fz-juelich.de/record/884209},
}