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A construction method and identification method of fingerprints of huanghuali mahogany tree species

A fingerprint and huanghuali technology, applied in the field of analysis and testing, can solve the problems of scientific identification of mahogany furniture wood species, achieve obvious social and economic benefits, the method is simple and practical, and the effect of high sensitivity

Active Publication Date: 2019-10-25
INSTITUTE OF ANALYSIS GUANGDONG ACADEMY OF SCIENCES (CHINA NATIONAL ANALYTICAL CENTER GUANGZHOU)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, there are no relevant reports on the chemical composition analysis of Hainan huanghuali and Vietnamese huanghuali at home and abroad, and it is impossible to scientifically identify the types of mahogany furniture wood species. The method of wood species identification

Method used

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  • A construction method and identification method of fingerprints of huanghuali mahogany tree species
  • A construction method and identification method of fingerprints of huanghuali mahogany tree species
  • A construction method and identification method of fingerprints of huanghuali mahogany tree species

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] Embodiment 1: Hainan huanghuali and Vietnamese huanghuali

[0021] (1) Take Hainan huanghuali mahogany furniture and Vietnamese huanghuali mahogany furniture respectively, use an electric drill to drill wood powder, weigh about 0.10g sample, put it into a 20mL headspace bottle with a Teflon sealing plug, seal it, The sample is put into the injector;

[0022] (2) Insert the solid-phase microextraction needle with the PDMS / DVB (65 μm) extraction head through the sealing plug into the headspace bottle, push out the extraction head (the extraction head is about 1 cm away from the sample surface), and solid-phase microextraction of Hainan Huanghuali Or the odor components of Vietnamese huanghuali, extracted at 60°C for 20min, took out the solid phase microextraction needle and quickly inserted it into the gas chromatography inlet of HP 7890BGC / 5977AMSD gas chromatography / mass spectrometry, desorbed at 250°C for 10min, GC- MS determination of odor components.

[0023] The g...

Embodiment 2

[0030] Embodiment 2: the tree species identification of certain rosewood log

[0031] (1) Get the rosewood log, drill wood powder with an electric drill, weigh about 0.10g sample, put it into a 20mL headspace bottle with a polytetrafluoroethylene sealing plug, seal it, and put the sample into the sampler;

[0032] (2) Insert the solid-phase microextraction needle with the PDMS / DVB (65 μm) extraction head into the headspace bottle through the sealing plug, push out the extraction head (the extraction head is about 1 cm away from the sample surface), and solid-phase microextraction of rosewood logs The odor components were heated and extracted in a water bath at 50°C for 20 minutes, and then the solid-phase microextraction head was quickly inserted into the gas chromatography inlet of the HP 7890BGC / 5977AMSD gas chromatography / mass spectrometer, desorbed at 250°C for 10 minutes, and the gas chromatography / mass spectrometry Separation and determination of chemical composition of ...

Embodiment 3

[0039] Example 3: Species identification of a certain mahogany furniture

[0040] (1) Take the mahogany furniture, drill wood powder with an electric drill, weigh about 0.10g of the sample, put it into a 20mL headspace bottle with a Teflon sealing plug, seal it, and put the sample into the sampler;

[0041] (2) Insert the solid-phase microextraction needle with the PDMS / DVB (65 μm) extraction head into the headspace bottle through the sealing plug, push out the extraction head (the extraction head is about 1 cm away from the sample surface), and solid-phase microextraction of mahogany furniture odor Components were heated and extracted in a water bath at 80°C for 20min, and then the solid-phase microextraction needle was quickly inserted into the gas chromatography inlet of the HP 7890BGC / 5977AMSD gas chromatography / mass spectrometry instrument, desorbed at 250°C for 10min, and the gas chromatography / mass spectrometry Use (GC / MS) method to separate and determine the chemical c...

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Abstract

The invention discloses a construction method for the fingerprint of the species of Huanghauli redwood and an identification method for the species of Huanghauli redwood. The identification method comprises the following steps: enriching odor components of a to-be-detected Huanghauli redwood sample by using a headspace solid-phase micro-extraction method; then determining the odor components of a to-be-detected Huanghauli redwood sample by using combined gas chromatography-mass spectrometry; recording a total ion chromatogram by using full-scan mass spectrometry so as to obtain the GS / MS fingerprint of the to-be-detected Huanghauli redwood; determining five shared characteristic components and calculating the relative contents of the five shared characteristic components; and indentifying whether the to-be-detected Huanghauli redwood is Hainan Huanghauli redwood or Vietnamese Huanghauli redwood according to the relative contents of the characteristic components and the GS / MS fingerprint. The method provided by the invention is low in sample amount, easy and rapid to operate and high in sensitivity; due to combination of chromatographic fingerprint information and the chemical components of the odor components, obtained results are accurate and reliable; and the method is applicable to identification of the tree species of each part of finished furniture products, does not destroy the integral structure of furniture and can be used for identification of the tree species of redwood and redwood furniture.

Description

Technical field: [0001] The invention belongs to the field of analysis and testing, and in particular relates to a method for constructing fingerprints of huanghuali mahogany species and a method for identifying them. Background technique: [0002] The Chinese name of Hainan Huanghuali is Dalbergia Dalbergia. Its origin is in Hainan Island, China, and it is a national second-class protected plant. Because of its slow growth, solid wood, and beautiful patterns, it has always been one of the five famous trees, and it has a very important position in ornamental, medicinal, and especially in furniture manufacturing. Due to the high price of Hainan huanghuali, it is not uncommon for fakes to be confused with real ones and shoddy ones in the market. Among them, low-priced Vietnamese huanghuali pretending to be high-priced Hainan huanghuali is a typical example. At present, there are no relevant reports on the chemical composition analysis of Hainan huanghuali and Vietnamese huang...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N30/02G01N30/06
CPCG01N30/02G01N30/06G01N2030/009G01N2030/025G01N2030/062
Inventor 吴惠勤黄晓兰侯思润林晓珊黄芳马艳芳马叶芬罗辉泰
Owner INSTITUTE OF ANALYSIS GUANGDONG ACADEMY OF SCIENCES (CHINA NATIONAL ANALYTICAL CENTER GUANGZHOU)
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