Pectins are major polysaccharide components in plant cell walls and play various roles in plant development and growth. In order to understand how pectin associates with cellulose, different kinds of pectins varying in neutral sugar side-chain content and backbone homogalacturonan degree of esterification were used to study their interaction with cellulose during its synthesis by Gluconacetobacter xylinus (ATCC53524). Binding studies in the absence of calcium revealed that all types of pectin were able to bind to cellulose and confirmed that binding of pectin with a high content of neutral sugar side chains (similar to 40%) was greater than that of homogalacturonan (less than 7% neutral sugars). C-13 NMR revealed that associated pectin molecules were neither rigid nor affected cellulose crystallinity; furthermore no apparent change in cellulose architecture was observed in scanning electron micrographs. The binding was reversible as a result of water washing and the de-binding behaviour was dominated by surface permeability rather than diffusion within the pellicle, as suggested by model fitting. Irreversible deformation of composites occurred as a result of mechanical compression accompanied by the release of pectins, and our results showed that both cellulose and pectin contributed to the load-bearing capacity of composites during compression. (C) 2015 Elsevier Ltd. All rights reserved.
机构:
Penn State Univ, Intercoll Grad Degree Program Plant Biol, University Pk, PA 16802 USAPenn State Univ, Intercoll Grad Degree Program Plant Biol, University Pk, PA 16802 USA
Gu, Jin
Catchmark, Jeffrey M.
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Penn State Univ, Intercoll Grad Degree Program Plant Biol, University Pk, PA 16802 USA
Penn State Univ, Dept Agr & Biol Engn, University Pk, PA 16802 USAPenn State Univ, Intercoll Grad Degree Program Plant Biol, University Pk, PA 16802 USA
机构:
Penn State Univ, Intercoll Grad Degree Program Plant Biol, University Pk, PA 16802 USAPenn State Univ, Intercoll Grad Degree Program Plant Biol, University Pk, PA 16802 USA
Gu, Jin
Catchmark, Jeffrey M.
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h-index: 0
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Penn State Univ, Intercoll Grad Degree Program Plant Biol, University Pk, PA 16802 USA
Penn State Univ, Dept Agr & Biol Engn, University Pk, PA 16802 USAPenn State Univ, Intercoll Grad Degree Program Plant Biol, University Pk, PA 16802 USA
机构:
Univ Copenhagen, Villum Kann Rasmussen Ctr Proact Plants, Dept Plant Biol & Biotechnol, Fac Life Sci, DK-1871 Copenhagen, DenmarkJoint BioEnergy Inst, Feedstocks Div, Emeryville, CA 94608 USA
Harholt, Jesper
Suttangkakul, Anongpat
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Joint BioEnergy Inst, Feedstocks Div, Emeryville, CA 94608 USA
Lawrence Berkeley Natl Lab, Phys Biosci Div, Emeryville, CA 94608 USAJoint BioEnergy Inst, Feedstocks Div, Emeryville, CA 94608 USA
Suttangkakul, Anongpat
Scheller, Henrik Vibe
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机构:
Joint BioEnergy Inst, Feedstocks Div, Emeryville, CA 94608 USA
Lawrence Berkeley Natl Lab, Phys Biosci Div, Emeryville, CA 94608 USAJoint BioEnergy Inst, Feedstocks Div, Emeryville, CA 94608 USA
机构:
Penn State Univ, Intercoll Grad Degree Program Plant Biol, University Pk, PA 16802 USAPenn State Univ, Intercoll Grad Degree Program Plant Biol, University Pk, PA 16802 USA
Gu, Jin
Catchmark, Jeffrey M.
论文数: 0引用数: 0
h-index: 0
机构:
Penn State Univ, Intercoll Grad Degree Program Plant Biol, University Pk, PA 16802 USA
Penn State Univ, Dept Agr & Biol Engn, University Pk, PA 16802 USAPenn State Univ, Intercoll Grad Degree Program Plant Biol, University Pk, PA 16802 USA
机构:
Penn State Univ, Intercoll Grad Degree Program Plant Biol, University Pk, PA 16802 USAPenn State Univ, Intercoll Grad Degree Program Plant Biol, University Pk, PA 16802 USA
Gu, Jin
Catchmark, Jeffrey M.
论文数: 0引用数: 0
h-index: 0
机构:
Penn State Univ, Intercoll Grad Degree Program Plant Biol, University Pk, PA 16802 USA
Penn State Univ, Dept Agr & Biol Engn, University Pk, PA 16802 USAPenn State Univ, Intercoll Grad Degree Program Plant Biol, University Pk, PA 16802 USA
机构:
Univ Copenhagen, Villum Kann Rasmussen Ctr Proact Plants, Dept Plant Biol & Biotechnol, Fac Life Sci, DK-1871 Copenhagen, DenmarkJoint BioEnergy Inst, Feedstocks Div, Emeryville, CA 94608 USA
Harholt, Jesper
Suttangkakul, Anongpat
论文数: 0引用数: 0
h-index: 0
机构:
Joint BioEnergy Inst, Feedstocks Div, Emeryville, CA 94608 USA
Lawrence Berkeley Natl Lab, Phys Biosci Div, Emeryville, CA 94608 USAJoint BioEnergy Inst, Feedstocks Div, Emeryville, CA 94608 USA
Suttangkakul, Anongpat
Scheller, Henrik Vibe
论文数: 0引用数: 0
h-index: 0
机构:
Joint BioEnergy Inst, Feedstocks Div, Emeryville, CA 94608 USA
Lawrence Berkeley Natl Lab, Phys Biosci Div, Emeryville, CA 94608 USAJoint BioEnergy Inst, Feedstocks Div, Emeryville, CA 94608 USA