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A method of comprehensively utilizing ginkgo exocarp

A technology of ginkgo testa and testa, which is applied in the direction of botany equipment and methods, applications, special forms of dry distillation, etc., can solve the problems of ginkgo testa polluting the environment, and achieve the effect of solving environmental pollution

Inactive Publication Date: 2015-09-09
SOUTHEAST UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to provide a method for comprehensively utilizing the ginkgo testa, to develop a highly efficient, low-toxic, environmentally friendly and pollution-free bamboo willow insecticide, and to use the filter residue as biomass high-temperature vacuum cracking to obtain bio-oil, residual carbon and cracking gas. In order to realize the maximization of resource utilization of Ginkgo biloba testa, and completely solve the problem of environmental pollution caused by the discarded Ginkgo testa in the production area of ​​Ginkgo biloba

Method used

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  • A method of comprehensively utilizing ginkgo exocarp
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  • A method of comprehensively utilizing ginkgo exocarp

Examples

Experimental program
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Effect test

Embodiment 1

[0031] (1) Put the peeled testa of mature ginkgo fruit in a vacuum drying oven at 40°C for 24 hours; take 1kg of the dried testa and crush it through a 40-mesh sieve;

[0032] (2) Heat the crushed testa with ethanol at a material-to-liquid ratio of 1g:4ml to 50°C and reflux for 2 hours, then filter, repeat ethanol reflux and filter 3 times, and combine the filtrates;

[0033] (3) Evaporate the filtrate in vacuum at 20°C to obtain 89g of extract, and then add 2 times the mass of petroleum ether to dissolve and extract; evaporate the petroleum ether extract again in vacuum to obtain 56g of extract, dissolve and extract with 2 times the mass of methanol ;like image 3 Shown is the high performance liquid chromatogram of the methanol extract.

[0034] The HPLC conditions are as follows: HPLC: Shimadzu LC-20AT; column: GL Sciences Inc.Inertsil ODS-SP (4.6mm×150mm, 5μm); detector: SPD-20A UV / VIS ultraviolet-visible light detection detector (detection wavelength: 190-700nm); detect...

Embodiment 2

[0039] (1) Put the peeled testa of mature ginkgo fruit in a vacuum drying oven at 60°C for 36 hours; take 1 kg of the dried testa and crush it through a 60-mesh sieve;

[0040] (2) Heat the crushed testa with ethanol at a material-to-liquid ratio of 1g:5ml to 80°C for reflux for 3 hours, then filter, repeat ethanol reflux and filter 3 times, and combine the filtrates;

[0041] (3) Evaporate the filtrate in vacuum at 40°C to obtain 96g of the extract extract, then add 3 times the mass of petroleum ether to dissolve and extract; evaporate the petroleum ether extract again in vacuum to obtain 62g of extract, dissolve and extract with 3 times the mass of methanol ;

[0042] (4) Prepare 100ml of methanol extract, emulsifier (60wt% calcium dodecylbenzenesulfonate aqueous solution), and dimethyl sulfoxide at a volume ratio of 4:2:2, dilute 1000 times with water, and spray 102m bamboo willow forest , 82.1% mortality rate of Leaf beetle;

[0043](5) Vacuum-dry the filtered testa resi...

Embodiment 3

[0045] (1) Put the peeled testa of mature ginkgo fruit in a vacuum drying oven at 70°C for 48 hours; take 1kg of the dried testa and crush it through an 80-mesh sieve;

[0046] (2) Heat the crushed testa with ethanol at a material-to-liquid ratio of 1g:6ml to reflux at 60°C for 4 hours, then filter, repeat ethanol reflux and filter twice, and combine the filtrates;

[0047] (3) Evaporate the filtrate in vacuum at 40°C to obtain 87g of the extract, and then add 4 times the mass of petroleum ether to dissolve and extract; evaporate the petroleum ether extract again in vacuum to obtain 58g of the extract, dissolve and extract with 3 times the mass of methanol ;

[0048] (4) Methanol extract, emulsifier (30wt% aqueous solution of alkylphenol polyoxyethylene ether, 60wt% aqueous solution of calcium dodecylbenzenesulfonate v:v=5:5), N,N-dimethyl formazan Amide was prepared in 100ml at a volume ratio of 3:3:4, diluted 1000 times with water, sprayed on 102m bamboo willow forest, and ...

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Abstract

The invention discloses a comprehensive utilization method of ginkgo biloba testa. The comprehensive utilization method comprises the following steps: drying and crushing the deciduous testa of ripe ginkgo nuts, which is used as raw materials, extracting, concentrating, obtaining the ginkgolic acid in the ginkgo biloba testa and preparing an insecticide; and drying testa residues obtained after extraction, and cracking the testa residues in vacuum for preparing biological oil, carbon residues and pyrolysis gas, thus the resource utilization of the ginkgo biloba testa is maximized. The comprehensive utilization method has the advantages that an insecticidal bactericidal active ingredient, namely the ginkgolic acid contained in the testa is utilized, the residues obtained after extraction are cracked into biological oil, and the problem of environmental pollution of gingko producing places caused by discarding the testa at random is solved.

Description

technical field [0001] The invention relates to the technical field of ginkgo processing, in particular to a method for comprehensively utilizing ginkgo exocarp. Background technique [0002] my country is rich in ginkgo resources, accounting for about 70% of the world's total. Based on this, it is estimated that there are at least 30,000 tons of fresh testa in the country every year, and the dry testa is about 18,000 tons after removing moisture. Ginkgolic acid accounts for 3 to 4% of the dry testa weight, and a considerable amount of ginkgolic acid is discarded every year; this not only pollutes the environment, but also causes a great waste of resources. Therefore, in-depth research, development and utilization of ginkgo testa can not only achieve waste utilization and turn waste into treasure, but also prevent environmental pollution and make full use of resources, thereby obtaining greater economic and social benefits. [0003] In the technical field of biopesticides,...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A01N65/06C10B53/02A01P7/04
CPCY02E50/14Y02E50/10
Inventor 潘晓梅田路飞肖国民张俊薛志君黄兵
Owner SOUTHEAST UNIV