Comparative study of biorefinery processes for the valorization of fast-growing Paulownia wood

2020 ◽  
Vol 314 ◽  
pp. 123722 ◽  
Author(s):  
Pablo G. del Río ◽  
Viana D. Domínguez ◽  
Elena Domínguez ◽  
Patricia Gullón ◽  
Beatriz Gullón ◽  
...  
Keyword(s):  
Comparative Study ◽  
Fast Growing ◽  
Paulownia Wood

scholarly journals Effects of Ageing on the Color and Surface Chemistry of Paulownia Wood (P. elongata) from Fast Growing Crops

BioResources ◽  
2016 ◽  
Vol 11 (4) ◽  
Author(s):  
Xin You Liu ◽  
Maria Cristina Timar ◽  
Anca Maria Varodi ◽  
Song Lin Yi
Keyword(s):  
Surface Chemistry ◽  
Fast Growing ◽  
Paulownia Wood

scholarly journals A commercial laccase-mediator system to delignify and improve saccharification of the fast-growing Paulownia fortunei (Seem.) Hemsl.

Holzforschung ◽  
2018 ◽  
Vol 73 (1) ◽  
pp. 45-54 ◽  
Author(s):  
Jorge Rencoret ◽  
Antonio Pereira ◽  
Gisela Marques ◽  
José Carlos del Río ◽  
Ángel T. Martínez ◽  
...  
Keyword(s):  
Lignin Content ◽  
Enzymatic Saccharification ◽  
2D Nmr ◽  
Syringic Acid ◽  
2D Nmr Spectroscopy ◽  
Fast Growing ◽  
Alkaline Peroxide ◽  
Syringyl Lignin ◽  
Methyl Syringate ◽  
Paulownia Wood

Abstract It was demonstrated for the first time that a laccase-based enzymatic pretreatment is able to delignify fast-growing paulownia species. The treatment was performed with a commercial low-redox potential laccase isolated from Myceliophthora thermophila (Apinis) Oorschot and methyl syringate (MeS) as a natural phenolic mediator. Up to 24% lignin removal was attained by the laccase-MeS treatment (L/MeS), followed by alkaline peroxide extraction in a multistage sequence. The reduction in lignin content was accompanied by a significant improvement in the subsequent enzymatic saccharification, with increases of up to 38% glucose and 34% xylose yields. The structural modifications of the lignin were analyzed in situ by two dimensional-nuclear magnetic resonance (2D-NMR) spectroscopy. A considerable removal of guaiacyl and syringyl lignin units with respect to the carbohydrate signals was visible as well as the cleavage of β-O-4′, β-5′ and β-β′ linkages leading to elevated amounts of Cα-oxidized guaiacyl and syringyl units. The presence of oxidized lignin compounds in the filtrates of the enzymatic treatments – such as vanillin, vanillic acid, syringaldehyde and syringic acid – conclusively demonstrates the ability of L/MeS treatment to oxidize and depolymerize the lignin in paulownia wood.

Comparative study of the DNA-binding HU-type proteins from slow growing and fast growing strains of Rhizobiaceae

1984 ◽  
Vol 121 (2) ◽  
pp. 471-477 ◽  
Author(s):  
Hussain Khanaka ◽  
Bernard Laine ◽  
Pierre Sautiere ◽  
Jean Guillaume
Keyword(s):  
Dna Binding ◽  
Comparative Study ◽  
Fast Growing ◽  
Slow Growing

scholarly journals Saudi Undergraduate Computing Programs in Light of the 2020 Curricula Report

2021 ◽  
Vol 15 ◽  
pp. 137-146
Author(s):  
Yazeed Alabdulkarim ◽  
Mohammed Almukaynizi ◽  
Marwan Almaymoni ◽  
Abdulaziz Alhadlag ◽  
Shada Alsalamah ◽  
...  
Keyword(s):  
Saudi Arabia ◽  
Comparative Study ◽  
Current Status ◽  
International Programs ◽  
Public And Private ◽  
The Public ◽  
Fast Growing ◽  
Comparison Criteria ◽  
International University ◽  
Undergraduate Programs

University undergraduate pro- grams in computing disciplines are updated regularly to adapt to advancements in the field and emerging, fast-growing industry demand. This paper reports the current status of a selected set of undergraduate programs in com- puting fields in Saudi Arabia and compares them to other programs from international universi- ties in light of the 2020 Computing Curricula Report (CCR). This comparative study aims to enlighten future efforts for designing cur- ricula and updating undergraduate computing programs in Saudi Arabia. A sample of 26 Saudi universities (15 public and 11 private) and 15 international universities offering 161 programs is selected. The comparison criteria include program discipline, duration, number of units, accreditation, required training, and others. We find significant differences between programs offered by Saudi public and private universities compared to international university programs. For example, programs offered by Saudi universities, especially the public, require more units compared to international programs (median of 143 units vs. 120 units). Our findings would guide future undergraduate computing program developments in Saudi Arabia.

Sign in / Sign up

Export Citation Format

Share Document