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Jerusalem artichoke leaf dichloromethane extract emulsion and preparation method and application thereof

A dichloromethane and extract technology, applied in the field of Jerusalem artichoke leaf dichloromethane extract emulsion and preparation thereof, can solve problems such as blank of Jerusalem artichoke leaf emulsion, and achieve the effect of increasing concentration efficiency

Active Publication Date: 2016-07-06
NANJING AGRICULTURAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] With the development of society and the improvement of science and technology, green pesticide emulsions have appeared in people's perspectives, but the research on emulsions of Jerusalem artichoke leaves in my country is almost blank, and there is a large research space to be tapped

Method used

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  • Jerusalem artichoke leaf dichloromethane extract emulsion and preparation method and application thereof
  • Jerusalem artichoke leaf dichloromethane extract emulsion and preparation method and application thereof
  • Jerusalem artichoke leaf dichloromethane extract emulsion and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] The Jerusalem artichoke variety used in the method is South Jerusalem artichoke No. 1, provided by the Marine Tidal Flat Resources Laboratory of the School of Resources and Environment, Nanjing Agricultural University, and planted in Jinhai Farm, Dafeng City, Yancheng, Jiangsu Province. The waste leaves of Jerusalem artichoke were collected from September to November and placed in 105 ℃ oven for 15 minutes to kill green, then transfer to 75 ℃, 1 ~ 2d drying, then take out and store for later use.

[0035] 1) Put Jerusalem artichoke leaves in a container and then pour 70% ethanol (w / v ratio is 1:4), extract for 25 days, stir 3 times a day, 5 minutes each time; use vacuum pumping device for ethanol extract Suction filtration, the filtrate was rotary evaporated with a rotary evaporator, and the ethanol was removed by rotary evaporation; the extract obtained by rotary evaporation was extracted with petroleum ether and dichloromethane to obtain petroleum ether extract, dichlo...

Embodiment 2

[0053] Embodiment 2 Microemulsion quality detection

[0054] The extract of Jerusalem artichoke leaves prepared in Example 1 is 5%, DBS-Na 2.5%, OP-107.5%, ethanol 12%, methanol 4%, cyclohexanone 6%, the balance is water, and the total mass of each raw material is 100%. The sub-content is 100%.

[0055] Add solvent and emulsifier combination to Jerusalem artichoke leaf dichloromethane extract according to the percentage content of Jerusalem artichoke leaf dichloromethane extract, solvent, emulsifier combination, co-solvent or co-surfactant and water one by one , co-solvent or co-surfactant and water, stir evenly, and adjust the pH of the dichloromethane extract of Jerusalem artichoke leaves to 5-8 with acid or alkali to obtain the dichloromethane extract emulsion of Jerusalem artichoke leaves.

[0056] Choice of water quality

[0057] The water quality with different hardness below 342mg / L (calculated as calcium carbonate concentration) was screened out. The results of the m...

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Abstract

The invention discloses jerusalem artichoke leaf dichloromethane extract emulsion and a preparation method and application thereof. The jerusalem artichoke leaf dichloromethane extract emulsion is prepared from 5% of jerusalem artichoke leaf dichloromethane extract extractum, 8%-20% of solvent, 9%-12% of an emulsifier composition, 9%-10% of cosolvent or cosurfactant and the balance water, wherein the sum of the percentage content of all the materials is 100%, the solvent is selected from absolute ethyl alcohol, the emulsifier composition is selected from one of a composition of chitosan and DBS-Na, a composition of OP-10 and DBS-Na and a composition of NP-10 and DBS-Na, and the cosolvent or cosurfactant is selected from methyl alcohol and cyclohexanone. Accordingly, crude extract is extracted from jerusalem artichoke leaves to be used for preparing the dichloromethane emulsion, and the jerusalem artichoke leaf dichloromethane extract is successfully prepared into the emulsion with the stable property by optimizing the formula.

Description

technical field [0001] The invention belongs to the field of green pesticide preparations, and relates to an emulsion of dichloromethane extract from Jerusalem artichoke leaves, a preparation method and application thereof. Background technique [0002] Jerusalem artichoke, also known as Jerusalem artichoke, is a perennial herb of the Compositae family and the genus Sunflower. Its origin comes from North America, and it was introduced to Europe in the 17th century, and then to China. Jerusalem artichoke has strong adaptability, cold tolerance, drought tolerance and barren tolerance. Most of the leaves of Jerusalem artichoke bloom in autumn, which is yellow in shape like a chrysanthemum, and the flowering period is generally from August to October. The leaf bases are opposite, the leaf surface is rough, the back of the leaf is pilose, the edge is serrated, green. Jerusalem artichoke leaves can be used as antipyretic, analgesic, anti-inflammatory and anti-spasmodic drugs to ...

Claims

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Application Information

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IPC IPC(8): A01N65/12A01N25/04A01N25/22A01P3/00
CPCA01N25/04A01N25/22A01N65/12A01N2300/00
Inventor 刘玲耿在燕隆小华刘兆普张莉黄玉玲
Owner NANJING AGRICULTURAL UNIVERSITY