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Title: Assessing the availability of two bamboo species for fermentable sugars by alkaline hydrogen peroxide pretreatment

Journal Article · · Bioresource Technology
 [1];  [1];  [1];  [2];  [3];  [1];  [2];  [4]; ORCiD logo [5]
  1. Chinese Academy of Forestry, Nanjing (China)
  2. Chinese Academy of Forestry, Nanjing (China); Nanjing Forestry University (China)
  3. Nanjing Forestry University (China)
  4. University of Tennessee, Knoxville, TN (United States)
  5. University of Tennessee, Knoxville, TN (United States); University of Tennessee Institute of Agriculture, Knoxville, TN (United States); Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)

We report this study comprehensively investigated two bamboo species (i.e. Neosinocalamus affinis and Phyllostachys edulis) in terms of their cell wall ultrastructure, chemical compositions, enzymatic saccharification, and lignin structure before and after alkaline hydrogen peroxide pretreatment (AHP). During AHP, Neosinocalamus affinis (NAB) had higher delignification than Phyllostachys edulis (PEB), and thus showed better enzymatic digestibility (93.05% vs 53.57% for glucan). The fundamental chemical behavior of the bamboo lignins was analyzed by fluorescence microscope (FM), confocal Raman microscope (CRM), molecular weight analysis, and 2D HSQC-NMR. Results indicated that the PEB has thicker cell wall and more concentrated lignin in its compound middle lamella and cell corner middle lamella than NAB. Moreover, PEB lignin contains more G units (S/G of 0.95), in evident contrast to that of NAB lignin (S/G of 1.30), which favor the formation of C–C linkages, thus impeding its degradation during the AHP.

Research Organization:
Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)
Sponsoring Organization:
USDOE Office of Science (SC); National Natural Science Foundation for Youth; Jiangsu Province Key Laboratory of Biomass Energy and Materials
Grant/Contract Number:
AC05-00OR22725
OSTI ID:
1883800
Journal Information:
Bioresource Technology, Journal Name: Bioresource Technology Journal Issue: 1 Vol. 349; ISSN 0960-8524
Publisher:
ElsevierCopyright Statement
Country of Publication:
United States
Language:
English

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