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Extraction of insecticide active ingredients and terpene alcohol of Mafeng tree from Mafeng seed and its use thereof

A technology of jatrophenol and insecticidal activity, applied in the field of preparation and application of botanical insecticidal active ingredients, capable of solving problems such as unrevealed insecticidal functions of crop pests

Inactive Publication Date: 2006-08-16
SICHUAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] From the above bibliographical reports, the extract obtained from Jatropha curcas seed oil and seeds is extracted with water and petroleum ether, and what insecticidal active ingredient and its extraction method are contained therein are not disclosed; Several biologically active substances isolated have not revealed that they have insecticidal functions against crop pests

Method used

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  • Extraction of insecticide active ingredients and terpene alcohol of Mafeng tree from Mafeng seed and its use thereof
  • Extraction of insecticide active ingredients and terpene alcohol of Mafeng tree from Mafeng seed and its use thereof
  • Extraction of insecticide active ingredients and terpene alcohol of Mafeng tree from Mafeng seed and its use thereof

Examples

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Effect test

Embodiment 1

[0028] After the mature Jatropha curcas seeds are naturally dried and shelled, the seed kernels are pulverized by a tissue grinder, extracted with 10 times the mass of absolute ethanol at 25°C for 24 hours, repeated twice, the extracts are combined, and The solvent is evaporated under reduced pressure by a rotary evaporator to obtain a semi-oily concentrated ethanol extract containing insecticidal active ingredients.

Embodiment 2

[0030] After the mature Jatropha curcas seeds are naturally dried and shelled, the seed kernels are pulverized by a tissue grinder, extracted with 5 times the mass of absolute ethanol at 20°C for 48 hours, repeated 3 times, the extracts are combined, and The solvent is evaporated under reduced pressure by a rotary evaporator to obtain a semi-oily concentrated ethanol extract containing insecticidal active ingredients.

Embodiment 3

[0032] After the mature Jatropha curcas seeds are naturally dried and shelled, the seed kernels are pulverized by a tissue grinder, extracted with 8 times the mass of absolute ethanol at 15°C for 72 hours, repeated 3 times, and the extracts are combined. Rotary evaporator evaporates and recovers the solvent under reduced pressure to obtain a semi-oily concentrated ethanol extract containing insecticidal active ingredients.

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Abstract

A process for extracting the active insecticiding component and curcas terpinol from the curcas seeds features that they are extracted in absolute alcohol under a certain temp condition. Said active insecticiding component can be used to prevent and eliminate the radish aphis and cabbage caterpillar without environmental pollution.

Description

1. Technical field [0001] The invention belongs to the technical field of preparation and application of botanical insecticidal active ingredients, in particular to a method for extracting insecticidal active ingredients and its monomeric compound-jatrophanol I from the seeds of Jatropha curcas and their Application as a pesticide. 2. Background technology [0002] In view of the inherent shortcomings of chemical pesticides and the long-term unreasonable abuse of people, it not only leads to serious 3R-residue, resistance and pest re-emergence of crops, but also destroys the ecological balance of nature. In order to reduce the impact of chemical pesticides on people's lives and the natural environment, people began to pay attention to the research and development of botanical pesticides. Since botanical pesticides are derived from natural organisms, they are easy to degrade, have a short residual effect period, and are not easy for pests to develop resistance, so they have ...

Claims

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Application Information

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IPC IPC(8): A01N31/06
Inventor 李静陈放
Owner SICHUAN UNIV
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