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A method for isolating phenolic substances or juvabiones from wood comprising knotwood

A technology of phenolic substances and juveniles, applied in the separation/purification of carbonyl compounds, ether separation/purification, chemical instruments and methods, etc., can solve the problem of no isolated compounds found

Inactive Publication Date: 2004-12-08
比扎尼·霍尔姆博姆 +5
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0008] Although it has been mentioned in the literature (2) that certain lignans, especially hydroxy matesinol, are contained in wood and branches, no effective method for isolating such compounds from wood has been found so far

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  • A method for isolating phenolic substances or juvabiones from wood comprising knotwood
  • A method for isolating phenolic substances or juvabiones from wood comprising knotwood
  • A method for isolating phenolic substances or juvabiones from wood comprising knotwood

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Embodiment Construction

[0019] The term "phenolic substances" is understood to include lignans, oligolignans, flavonoids, isoflavonoids, stilbenes, tannins and phenolic acids. All these compounds are mainly hydrophilic substances and can be extracted with polar solvents, ie hydrophilic solvents.

[0020] The term "knotted wood" is understood to include "knots", ie the parts of the wood where the branches are implanted into the trunk, as well as the parts that protrude from the trunk.

[0021] The term "oversized chip fraction" is the fraction of unacceptable chips obtained when the chips are screened during the pulping process. Oversized chips can account for 1-5% of the total chips and cannot be used for pulp production. Until now, oversized slices have been either recycled and sliced ​​or separated and burned. Oversize chips contain, in addition to knotty wood, a considerable amount of "normal wood," ie useful wood that can be used for pulping. The knotty wood content in the oversized chipping f...

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Abstract

The present invention relates to a method for isolating of phenolic substances or juvabiones from wood comprising knotwood, said method comprising the steps of a) extracting i) the over-sized chip fraction obtained by screening chipped wood, or ii) a knot-rich sub-fraction obtained from said over-sized chip fraction, or iii) knotwood obtained as residue in finishing of mechanical wood products with a polar solvent, and b) recovering the extract.

Description

technical field [0001] The present invention relates to a method for isolating chemical substances, namely phenolic substances or juveniles, from wood containing knotty wood. Background technique [0002] The publications and other materials cited herein to clarify the background of the invention and, in particular, to provide detailed explanations of the practice are incorporated herein by reference. [0003] Plant resources, including wood, are known to contain phenolic substances which are more or less hydrophilic. Phenolics extracted from wood include flavonoids, lignans, and stilbenes. The phenolic substances contained in spruce are mainly lignans, while the phenolic substances in pine and hardwood are mainly flavonoids and stilbenes. Freudenberg and Knof (1) discovered a variety of lignans in Norway spruce as early as 1957, including, for example, hydroxy materesinol, materesinol, hemlock lactone, pinoresinol, oxo materesinol , larch resinol, hydroxylarch resinol is...

Claims

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Application Information

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IPC IPC(8): C07D307/12C07C37/82C07C41/36C07C43/23C07C45/79C07C49/835C07D307/33C07D307/92C07D311/32C07D311/62C07D493/04C07G99/00
CPCC07G17/00C07G99/00
Inventor 比扎尼·霍尔姆博姆克里斯特·埃克曼贾尔·亨明马库·鲁南伦肯尼思·森德伯格斯蒂芬·威尔福
Owner 比扎尼·霍尔姆博姆