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Hypocrellin as photosensitive biological bactericide and its prepn

A technology of biological fungicide and hypocrellin, which is applied in biocides, animal repellents, plant growth regulators, etc.

Inactive Publication Date: 2003-06-04
张红雨 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

On the other hand, the use of phytochromes, especially hypocrellin, as a fungicide has not been reported, which prompted us to develop a new type of biological fungicide with hypocrene as an active ingredient.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0009] Example 1 1kg of the original medicinal material of bamboo red fungus, crushed to 100 mesh, added 10L of ethanol with a content of 75%, soaked at 10-15°C for 12h, then heated to reflux for 120min, filtered after reflux, discarded medicinal residues, and evaporated 90% of the filtrate solvent, until the remaining 1 / 10 of the volume, 1 kg of the stock solution of Hypocreba ethanol extract is obtained.

[0010] Bamboo red fungus has another name called Hypocreta bamboo, Amomum bamboo, bamboo fruit, and bamboo flower (Yunnan). The shape of Hypocrella bambusae (BetBr). Sace bamboo red fungus raw material varies with the place of origin, as small as soybeans, as large as peanuts, and approximately spherical.

[0011] Hypocrellin A contains about 4% of hypocrellin alcohol extract, hypocrellin A (Hypocrellin A), is 4,9-dihydroxy-3,10-perylenequinone derivatives, its molecular formula is C 30 h 26 o 10 , the molecular weight is 546, and the structural formula is:

[0012] ...

Embodiment 2

[0015] When extracting in Example 2, add 5L of ethanol with a content of 75%, soak at 45-50°C for 48 hours, then heat and reflux for 20 minutes, evaporate 90% of the solvent from the filtrate, and when the volume remains one-fifth, hypocrellin is obtained Stock solution 1.0kg, add Tween-40 (polyoxyethylene sorbitan monopalmitate) 1.5kg and 7.5L water. The rest are the same as example 1.

Embodiment 3

[0016] When extracting in Example 3, add 15L of ethanol with a content of 75%, soak at 25-30°C for 36 hours, then heat and reflux for 60 minutes, and evaporate 90% of the solvent from the filtrate until the remaining 1 / 15 of the volume is obtained. To 1.0 kg of plain stock solution, 1 kg of Tween-60 (polyoxyethylene sorbitan monostearate) and 8 L of water were added. The rest are the same as example 1.

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PUM

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Abstract

The present invention relates to biocide containing microbe and microbial product. The hypocrellin photosensitive biological bactericide consists of main component, supplementary component and solvent. The main component is alcohol extractive of bamboo parasitic fungus, the supplementary component is non-ionic surfactant, and the solvent is water. The hypocrellin photosensitive biological bactericide is prepared through C1-C4 alcohol soaking and reflux of bamboo parasitic fungus, evaporating alcohol, adding surfactant and water while stirring. The present invention has bioactivity of preventing and treating apple eyespot and anthrax, pear black heart, cucumber downy mildew, chili root rot and other diseases.

Description

Technical field [0001] The invention belongs to the category of biocides containing microorganisms and their products, and in particular relates to a hypocrellin photosensitive biological fungicide and a preparation method thereof. Background technique [0002] Pesticide is a huge industry with great market demand. At present, although the variety, output, and output value of chemical pesticides still dominate, due to the various drawbacks of chemical pesticides, their market has stagnated and experienced negative growth, replaced by vigorously developing biological pesticides. [0003] The use of photosensitization of phytochrome to achieve the purpose of killing insects and bacteria is the frontier topic of biopesticide research. Photosensitization or photodynamic action refers to the phenomenon that pigments produce a series of active oxygen and free radicals under light conditions, thereby causing damage to organisms. Due to the dual selectivity of pigment and light, b...

Claims

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Application Information

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IPC IPC(8): A01N31/16
Inventor 张红雨刘为忠
Owner 张红雨
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