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Method for extracting maackia amurensis extract which inhibits the wood rot fungi

A technology of extracts and wood, applied in botany equipment and methods, chemicals for biological control, animal repellants, etc., can solve problems such as decay and wood susceptibility to bacteria

Inactive Publication Date: 2010-02-24
NORTHEAST FORESTRY UNIVERSITY
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved by the present invention is to solve the problem that wood is easily rotted by bacteria and provides a method for extracting an extract of wood-rot-inhibiting bacteria from Huai Huai

Method used

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  • Method for extracting maackia amurensis extract which inhibits the wood rot fungi
  • Method for extracting maackia amurensis extract which inhibits the wood rot fungi
  • Method for extracting maackia amurensis extract which inhibits the wood rot fungi

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specific Embodiment approach 1

[0008] Specific Embodiment 1: In this embodiment, the method for extracting the extract of wood-rot-inhibiting fungi from Huai Huai is as follows: 1. The air-dried Huai Huai heartwood is crushed to a fineness of 40 mesh to 60 mesh, and then heated at 32° C. to 80 Under the condition of ℃, the heartwood is leached in methanol for 5 hours according to the ratio of heartwood mass and methanol volume ratio of 1:7, and filtered; 2. Under the condition of 32°C to 80°C, the heartwood after step 1 methanol leaching According to the ratio of 1:4, extract the heartwood in methanol for 3h, filter the quality of the mass of methanol and the volume of methanol; three, combine the filtrate obtained in step 1 and step 2, and reclaim the solvent by distillation under reduced pressure. Dry to constant weight under the condition of vacuum degree of 0.7MPa~0.9MPa to obtain the methanol extract; 4. Repeat steps 1 to 3 with acetone instead of methanol to obtain the acetone extract; 5. Combine the m...

specific Embodiment approach 2

[0019] Specific embodiment two: the difference between this embodiment and specific embodiment one is that in step one, the air-dried Huaihuai heartwood is crushed to a fineness of 50 mesh. Others are the same as in the first embodiment.

specific Embodiment approach 3

[0020] Embodiment 3: This embodiment is different from Embodiment 1 or Embodiment 2 in that step 1 is leached under the condition of 53°C. Others are the same as in the first or second embodiment.

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Abstract

The invention relates to a method for extracting maackia amurensis extract which inhibits the wood rot fungi, which solves the problem of wood rot owing to bacteria attack. The method comprises: stepone extracting the maackia amurensis heart wood after air drying in the methanol for 5h, filtering, extracting for 3h in the methanol, filtering, combining the filtrate, recovering solvent through reduced pressure distillation, drying to the constant weight and obtaining the methanol extract; step two, substituting the acetone for methanol to repeat step one to obtain the acetone extract; step three, mixing the methanol extract and the acetone extract to obtain the maackia amurensis extract which inhibits the wood rot fungi. The maackia amurensis extract obtained by the inventive method has good inhibition effects to coriolus, gloeophyllum trabeum, chaetomium globosum and paecilomyces varioti bainier and includes twenty-seven kinds of components.

Description

technical field [0001] The invention relates to an extraction method for an extract of inhibiting wood decay fungi. Background technique [0002] Wood is easily rotted by bacteria such as white rot fungi, brown rot fungi, Chaetomium globosa, and Paecilomyces wansonii. We develop and extract phytochemical components with natural antiseptic properties, and conduct wood antiseptic research on tree extracts. Realize low-toxicity protection of wood and clean production of anti-corrosion industry to lay a theoretical and technical foundation, which is of great economic value and social value to the protection and conservation of wood resources, the advancement of wood protection science and technology, the reduction of environmental pollution load, and the protection of natural ecology. significance. Contents of the invention [0003] The technical problem to be solved by the present invention is to provide a method for extracting an extract of inhibiting wood decay bacteria fr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01N65/20A01P1/00
Inventor 李坚苏文强杨冬梅李淑君
Owner NORTHEAST FORESTRY UNIVERSITY
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