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Mikania micrantha n-butanol extract, and preparation method and application thereof

A technology of n-butanol and Mikania micrantha, applied in the field of pesticides, achieves the effects of strong inhibitory activity, improved pesticide safety, and elimination of harm

Active Publication Date: 2013-04-03
中山市亚龙大农林科技发展有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Comprehensive utilization of Mikania micrantha has no relevant literature reports

Method used

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  • Mikania micrantha n-butanol extract, and preparation method and application thereof
  • Mikania micrantha n-butanol extract, and preparation method and application thereof
  • Mikania micrantha n-butanol extract, and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] Example 1 Preparation process of Mikania micrantha natural herbicide of the present invention

[0021] prescription:

[0022]

[0023] Preparation method:

[0024] Take dried Mikania and pulverize it into coarse powder, add 8 times the amount of 95% ethanol to reflux and extract 2 times, 1 hour each time, combine the ethanol solution, and recover the ethanol under reduced pressure. The obtained extract is extracted 3 times with n-butanol, 200ml each time , Combine the n-butanol liquid, recover the n-butanol under reduced pressure, and dry under reduced pressure to form a dry extract to obtain the n-butanol extract.

[0025] Take the above-mentioned n-butanol extract, grind it, add Tween 80, stir evenly, and under constant stirring, add purified water to 1000ml, continue to stir until the mixture is evenly mixed, and filter to get it.

[0026] Instructions:

[0027] Before use, dilute the above herbicide 200 times with purified water, stir evenly, put it into a sprayer, and spray ...

Embodiment 2

[0035] Example 2 Extraction and separation method of compounds in Mikania micrantha according to the present invention

[0036] 6 kg dry powder of Mikania stalks and leaves was extracted 4 times with 95% ethanol reflux in a self-made Soxhlet extractor for 5 days each time. Filter, combine the extracts and concentrate under reduced pressure to obtain 830 grams of extract. Mix the extract with a small amount of silica gel, and soak it with 2000mL petroleum ether, ethyl acetate and n-butanol 3 times each for 2 hours. Suction filtration, the filtrate of each part is combined, and the n-butanol part is subjected to bioassay. The results showed that part of the n-butanol filtrate had a strong inhibitory effect on the growth of recipient (rice and barnyardgrass) seedlings. Part of the filtrate of n-butanol was concentrated to obtain 102 grams of extract. The extract was subjected to silica gel column chromatography (ethyl acetate / methanol as eluent) to obtain A 1 , A 2 , A 3 , A 4 , A...

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Abstract

The invention discloses a mikania micrantha n-butanol extract. The mikania micrantha n-butanol extract comprises the following components in percentage by weight: 4%-10% of ferulic acid and 4%-10% of chlorogenic acid. The invention further provides a preparation method and application of the mikania micrantha n-butanol extract, as well as a herbicide. The n-butanol extract is separated from natural mikania micrantha, has strong inhibitory activity to weeds, and is separated to obtain two active ingredients with strong inhibitory activity, namely the ferulic acid and the chlorogenic acid which are used for controlling the quality of the n-butanol extract. The mikania micrantha n-butanol extract is prepared into the herbicide by a modern process. The herbicide has a good inhibition effect to the normal weeds in farmlands and can substitute the existing chemical herbicide for greatly improving the safety of pesticides. Therefore, not only can the harm of the mikania micrantha be removed, but also new resources are developed for herbicide researches. The mikania micrantha n-butanol extract has a great significance to economic benefits and social benefits.

Description

Technical field [0001] The invention relates to a micrantha n-butanol extract, which belongs to the field of pesticides. Background technique [0002] Rice is an important food crop, and China is one of the largest rice producing countries in the world. Asia's rice planting area and total output far exceed those of other continents. Among them, India's rice cultivation area ranks first, and China ranks second. Rice cultivation methods are diverse, mainly divided into direct seeding and transplanting. In the past ten years or so, China's rice cultivation methods have changed greatly, and the direct seeding area has increased significantly, especially in the middle and lower reaches of the Yangtze River. Traditional hand transplanting has been replaced by mechanical transplanting and direct seeding. Due to changes in rice cultivation methods, the requirements for herbicide varieties are significantly different from before. Seedling cultivation does not have strict requirements ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01N37/38A01P13/00
Inventor 赵斌熊文明李拥军王建国戴展都郭佛杨王琼
Owner 中山市亚龙大农林科技发展有限公司
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