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Sugars Production for Green Chemistry from 2 nd Generation Crop ( Arundo donax L .): A Full Field Approach.
Author(s) -
Corno Luca,
Pilu Roberto,
Tran Kim,
Tambone Fulvia,
Singh Seema,
Simmons Blake A.,
Adani Fabrizio
Publication year - 2016
Publication title -
chemistryselect
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.437
H-Index - 34
ISSN - 2365-6549
DOI - 10.1002/slct.201600733
Subject(s) - arundo donax , corn stover , chemistry , xylose , biomass (ecology) , stover , yield (engineering) , lignin , raw material , sugar , hemicellulose , food science , crop , agronomy , organic chemistry , fermentation , biology , materials science , metallurgy
Arundo donax L. (giant cane) is a suitable feedstock for sugar production because of its high biomass yield and low agronomic input requirement. Eight A. donax clones were studied at full field scale for sugars production. 1‐ethyl‐3‐methylimidazolium acetate ‐ [C 2 C 1 im][OAc] ‐ and enzymatic treatments were used to obtain the sugars. Highest glucose yields were obtained for pretreatment performed at 160 °C for 3 hours, with glucan conversion yields from 40.8 % to 76.2 % for most productive A. donax clones (AD10 and AD 20). Differences in cell wall structure measured by micropore surface area (pores of 0.3 ‐ 1.5 nm) explained both ionic liquids and enzymatic performances of clones. Structural differences were due to the guaiacyl (G) and syringyl (S) units that determined different lignin cross‐linking affecting cell wall microporosity and so enzyme accessibility. Total glucose and xylose yields (11 Mg Ha −1 and 4.84 Mg Ha −1 , clone AD20), were impressive and about 3.5 to 4.5 times more than those obtainable from switchgrass and corn stover.