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Isolation of lignin...
Isolation of lignin-carbohydrate bonds in wood : model experiments and preliminary application to pine wood
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- Karlsson, Olov (författare)
- Luleå tekniska universitet,Träteknik,Wood Chemistry Laboratory, Department of Chemical Utilization, Forestry and Forest Products Research Institute, P.O. Box 16, Tsukuba Norin Kenkyu-Danchi Nai, Ibaraki, 305-8687, Japan
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- Ikeda, Tsutomu (författare)
- Wood Chemistry Laboratory, Department of Chemical Utilization, Forestry and Forest Products Research Institute, P.O. Box 16, Tsukuba Norin Kenkyu-Danchi Nai, Ibaraki, 305-8687, Japan
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- Kishimoto, Takao (författare)
- Laboratory of Wood Chemistry, Research Group of Bioorganic Chemistry, Division of Applied Bioscience, Graduate School of Agriculture, Hokkaido University, Sapporo, 060-8598, Japan; Wood Chemistry Laboratory, Department of Chemical Utilization, Forestry and Forest Products Research Institute, P.O. Box 16, Tsukuba Norin Kenkyu-Danchi Nai, Ibaraki, 305-8687, Japan
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- Magara, Kengo (författare)
- Wood Chemistry Laboratory, Department of Chemical Utilization, Forestry and Forest Products Research Institute, P.O. Box 16, Tsukuba Norin Kenkyu-Danchi Nai, Ibaraki, 305-8687, Japan
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- Matsumoto, Yuji (författare)
- Laboratory of Wood Chemistry, Department of Biomaterial Sciences, Graduate School of Agricultural and Life Sciences, The University of Tokyo, Tokyo, 113-8657, Japan
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- Hosoya, Shuji (författare)
- Wood Chemistry Laboratory, Department of Chemical Utilization, Forestry and Forest Products Research Institute, P.O. Box 16, Tsukuba Norin Kenkyu-Danchi Nai, Ibaraki, 305-8687, Japan; Institute of Agricultural and Forest Engineering, University of Tsukuba, Ibaraki, 305-8572, Japan
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(creator_code:org_t)
- Springer Science and Business Media LLC, 2004
- 2004
- Engelska.
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Ingår i: Journal of Wood Science. - : Springer Science and Business Media LLC. - 1435-0211 .- 1611-4663. ; 50:2, s. 141-150
- Relaterad länk:
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https://urn.kb.se/re...
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https://doi.org/10.1...
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Abstract
Ämnesord
Stäng
- A novel method for analysis of benzylic ether type lignin-carbohydrate bonds has been developed by using model compounds. Four diastereomers of model compound 3-(4-hydroxy-3-methoxyphenyl)-2-(2-methoxyphenoxy)-3-(methyl -d-glucopyranoside-6-O-yl)-1-propanol (GGMGP), were ozonized in acetic acid/water/methanol 16:3:1 for 1h at 0°C. The product from ozonation of each diastereomer was saponified and the corresponding -etherified tetronic acid (TAMGP) was isolated using ion exchange chromatography. Minor amounts of methyl -d-glucopyranoside (MGP) and small amounts of a gluconic acid etherified with tetronic acid (TAGLCA), tetronic acid, gluconic acid, and glyceric acid were detected in the product mixture of ozonated benzylic ether type model compounds. The results suggest that a benzyl ether bond between lignin and carbohydrate is rather stable during the ozone treatment. Acid treatments with sulfuric acid or trifluoroacetic acid of the derived TAMGP led to cleavage of the glucosidic bond but only a small amount of products (tetronic acid and glucose) resulting from cleavage of the -ether bond were formed. The successful chemical treatments were used for studies of benzylic ether bonds in Japanese red pine. The results suggest the presence of benzylic ether bonds to polysaccharides in the wood.
Ämnesord
- TEKNIK OCH TEKNOLOGIER -- Industriell bioteknik -- Biomaterial (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Industrial Biotechnology -- Bio Materials (hsv//eng)
Nyckelord
- Träfysik
- Wood Physics
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