Jim Parkås

Visar 21 publikationer

2014

Important Issues and Results from Knut Lundquist's Lignin Research at Chalmers

Knut Lundquist, Jim Parkås
Journal of Wood Chemistry and Technology. Vol. 35 (1), p. 3-7
Artikel i vetenskaplig tidskrift
2012

Origin of the acetylated structures present in white birch (Betula pendula Roth) milled wood lignin

J. Rencoret, J. C. del Rio, A. Gutierrez et al
Wood Science and Technology. Vol. 46 (1-3), p. 459-471
Artikel i vetenskaplig tidskrift
2010

1H NMR Database of Lignin Model Compounds in Different Solvents (supplement)

Knut Lundquist, Shiming Li, Jim Parkås
Rapport
2009

THE STRUCTURE AND CONFORMATION OF LIGNIN AS JUDGED BY X-RAY CRYSTALLOGRAPHIC INVESTIGATIONS OF LIGNIN MODEL COMPOUNDS: ARYLGLYCEROL β-SYRINGYL ETHERS

Knut Lundquist, Vratislav Langer, Jim Parkås
BioResources. Vol. 4 (2), p. 529-536
Artikel i vetenskaplig tidskrift
2009

2D-NMR (HSQC) difference spectra between specifically C-13-enriched and unenriched protolignin of Ginkgo biloba obtained in the solution state of whole cell wall material

N. Terashima, T. Akiyama, S. Ralph et al
Holzforschung. Vol. 63 (4), p. 379-384
Artikel i vetenskaplig tidskrift
2009

1H NMR Database of Lignin Model Compounds in Different Solvents

Knut Lundquist, Shiming Li, Jim Parkås
Rapport
2009

1H NMR SPECTRA OF LIGNIN MODEL COMPOUNDS

Shiming Li, Knut Lundquist, Jim Parkås et al
15th International Symposium on Wood, Fiber and Pulping Chemistry, Oslo, Norway June 15 – 18 2009, p. P-003
Paper i proceeding
2008

The Influence of Solvent and Derivatization on the 1H NMR Spectral Properties of Lignin Model Compounds

Shiming Li, Knut Lundquist, Jim Parkås
Proceedings of the10th EUROPEAN WORKSHOP ON LIGNOCELLULOSICS AND PULP, EWLP 2008; KTH Royal institute of Technology, Stockholm, Sweden 25-28 August 2008, p. 312-315
Paper i proceeding
2008

The Structure and Conformation of Lignin as Judged by X-ray Crystallographic Investigations of Lignin Model Compounds: Arylglycerol β-Syringyl Ethers

Knut Lundquist, Vratislav Langer, Jim Parkås
Proceedings of the10th EUROPEAN WORKSHOP ON LIGNOCELLULOSICS AND PULP, EWLP 2008; KTH Royal institute of Technology, Stockholm, Sweden 25-28 August 2008, p. 308-311
Paper i proceeding
2007

Reactions of lignin chromophores of the enal and enone types with sulfite

Knut Lundquist, Jim Parkås, Magnus Paulsson et al
BioResources. Vol. 2, p. 334-350
Artikel i vetenskaplig tidskrift
2007

Quantitative lignin analysis based on permanganate oxidation

Jim Parkås, Gösta Brunow, Knut Lundquist
BioResources. Vol. 2 (2), p. 169-178
Artikel i vetenskaplig tidskrift
2007

The stereochemistry and conformation of lignin as judged by X-ray crystallographic investigations of lignin model compounds: Arylglycerol β-guaiacyl ethers

Vratislav Langer, Knut Lundquist, Jim Parkås
BioResources. Vol. 2 (4), p. 590-597
Artikel i vetenskaplig tidskrift
2006

13-C assignments of the carbon atoms in the aromatic rings of lignin model compounds of the arylglycerol β-aryl ether type - Spectral assignments and Reference Data

M Bardet, Knut Lundquist, Jim Parkås et al
Magnetic Resonance in Chemistry. Vol. 44 (10), p. 976-979
Artikel i vetenskaplig tidskrift
2006

Quantitative lignin analysis based on permanganate oxidation

Jim Parkås, Gösta Brunow, Knut Lundquist
9th European Workshop on Lignocellulosics and Pulp, August 27-30, Vienna, Austria
Paper i proceeding
2005

Quantitative analysis of lignins based on permanganate oxidation (Method "phenolic")

Jim Parkås, Knut Lundquist, Gösta Brunow
Rapport
2004

Photoyellowing behavior of non-phenolic lignin models representative of end groups and beta-ether structures

Jim Parkås, Magnus Paulsson, Shiming Li et al
Nordic Pulp and Paper Research Journal. Vol. 19 (2), p. 146-154
Artikel i vetenskaplig tidskrift
2004

Quantitative lignin analysis

Jim Parkås, G. Brunow, Knut Lundquist
8th European Workshop on Lignocellulosics and Pulp, p. 271-274
Paper i proceeding

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