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Steam Pretreatment of Rice Hulls to Release Fermentable Saccharides : An Approach to Improve Recovery of (Hemi)Cellulosic Sugars Through Multivariate Design

Montipó, Sheila LU orcid ; Roslander, Christian LU ; Camassola, Marli ; Galbe, Mats LU and Wallberg, Ola LU orcid (2021) In Rice Science 28(5). p.501-510
Abstract

The conversion of rice hulls into fermentable saccharides was explored through steam pretreatment employing 2.5% SO2. The interaction between temperature and time was assessed by means of the response surface method to achieve optimum contents of C6-sugars in water-insoluble solids (WIS) and C5-sugars in the liquor. Pretreatment carried out at 218 °C for 2.3 min released liquor containing 55.4 g/L of sugars (29.1 g/L of xylose). In parallel, the WIS was subjected to enzymatic saccharification using different solid and enzyme loads via an experimental design: assays using 22.0% WIS and 20.0 filter paper units (FPU)/g led to 90.6 g/L of glucose, corresponding to a yield of 86.4% and an overall yield of 72.4%. The data reported... (More)

The conversion of rice hulls into fermentable saccharides was explored through steam pretreatment employing 2.5% SO2. The interaction between temperature and time was assessed by means of the response surface method to achieve optimum contents of C6-sugars in water-insoluble solids (WIS) and C5-sugars in the liquor. Pretreatment carried out at 218 °C for 2.3 min released liquor containing 55.4 g/L of sugars (29.1 g/L of xylose). In parallel, the WIS was subjected to enzymatic saccharification using different solid and enzyme loads via an experimental design: assays using 22.0% WIS and 20.0 filter paper units (FPU)/g led to 90.6 g/L of glucose, corresponding to a yield of 86.4% and an overall yield of 72.4%. The data reported are the highest ever found for such raw material, making it attractive to compete with conventional lignocellulosic biomass.

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author
; ; ; and
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
central composite rotatable design, high solid loading, hydrolysis, lignocellulosic feedstock, sulfur dioxide
in
Rice Science
volume
28
issue
5
pages
10 pages
publisher
Elsevier
external identifiers
  • scopus:85113642576
ISSN
1672-6308
DOI
10.1016/j.rsci.2021.07.010
language
English
LU publication?
yes
id
dfc931dc-4453-4c00-bc75-7332d956a78f
date added to LUP
2021-09-20 14:47:52
date last changed
2023-12-22 02:12:18
@article{dfc931dc-4453-4c00-bc75-7332d956a78f,
  abstract     = {{<p>The conversion of rice hulls into fermentable saccharides was explored through steam pretreatment employing 2.5% SO<sub>2</sub>. The interaction between temperature and time was assessed by means of the response surface method to achieve optimum contents of C6-sugars in water-insoluble solids (WIS) and C5-sugars in the liquor. Pretreatment carried out at 218 °C for 2.3 min released liquor containing 55.4 g/L of sugars (29.1 g/L of xylose). In parallel, the WIS was subjected to enzymatic saccharification using different solid and enzyme loads via an experimental design: assays using 22.0% WIS and 20.0 filter paper units (FPU)/g led to 90.6 g/L of glucose, corresponding to a yield of 86.4% and an overall yield of 72.4%. The data reported are the highest ever found for such raw material, making it attractive to compete with conventional lignocellulosic biomass.</p>}},
  author       = {{Montipó, Sheila and Roslander, Christian and Camassola, Marli and Galbe, Mats and Wallberg, Ola}},
  issn         = {{1672-6308}},
  keywords     = {{central composite rotatable design; high solid loading; hydrolysis; lignocellulosic feedstock; sulfur dioxide}},
  language     = {{eng}},
  number       = {{5}},
  pages        = {{501--510}},
  publisher    = {{Elsevier}},
  series       = {{Rice Science}},
  title        = {{Steam Pretreatment of Rice Hulls to Release Fermentable Saccharides : An Approach to Improve Recovery of (Hemi)Cellulosic Sugars Through Multivariate Design}},
  url          = {{http://dx.doi.org/10.1016/j.rsci.2021.07.010}},
  doi          = {{10.1016/j.rsci.2021.07.010}},
  volume       = {{28}},
  year         = {{2021}},
}