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Plant-based bacteriostat, preparation method thereof and application thereof

A bacteriostatic agent and antibacterial agent technology, applied in the field of plant pathogen suppression, to achieve the effects of easy acquisition, easy decomposition, and wide application

Inactive Publication Date: 2010-12-01
SOUTH CHINA AGRI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Some of these patents use a variety of plant extracts, some need to extract relatively pure components, and some are only aimed at a single plant pathogen, especially no inhibitory effect on major rice diseases at the same time.

Method used

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  • Plant-based bacteriostat, preparation method thereof and application thereof
  • Plant-based bacteriostat, preparation method thereof and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Put 5Kg of bittern blue leaf powder into the extraction kettle, add 10Kg of 95% ethanol by volume, soak at room temperature for 7 days, filter, repeat this 3 times, combine the filtrates, concentrate under reduced pressure, and obtain bittern with a solid content of 40wt%. Add 0.080 kg of Tween-80 to 1.365 kg of blue extract, stir well, and then add 9.698 kg of water to prepare a 5 wt % bacteriostatic emulsion.

Embodiment 2

[0028] Put 5 kg of bitter blue leaf powder into the extraction kettle, add 10 kg of 70% ethanol by volume, soak at room temperature for 7 days, extract 3 times like this, combine the filtrate, concentrate under reduced pressure, and obtain the bitter blue blue extract with a solid content of 65wt%. Liquid 1.159kg, add the Tween-80 of 0.06kg, fully stir, add water 6.307kg again, promptly make the bacteriostat emulsion of 10wt%.

Embodiment 3

[0030] Put 5 kg of indigo indigo powder into the extraction kettle, add 10 kg of acetone, soak for 7 days at room temperature, extract 3 times like this, combine the filtrate, concentrate under reduced pressure, and obtain 1.250 kg of indigo indigo extract with a solid content of 40 wt%. Add 0.07kg of Tween-80 and 0.01kg of Span-20, stir well, and then add 8.872kg of water to prepare a 5 wt% bacteriostat emulsion.

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Abstract

The invention discloses a plant-based bacteriostat, a preparation method and application thereof. The plant-based bacteriostat of the invention comprises active extracts of myoporum bontioides leaves. The plant-based bacteriostat of the invention has an inhibitory effect on a plurality of germs, particularly rice blast, sheath blight or bacterial blight. The plant-based bacteriostat of the invention has the advantages of high efficiency, low toxicity, environmental-friendliness, easy degradation, high germ resistance and the like and can be used as an ideal green pesticide.

Description

technical field [0001] The invention relates to the field of plant pathogenic bacteria inhibition, in particular to a plant-derived antibacterial agent and its preparation method and application. Background technique [0002] Rice blast (rice blast), sheath blight (sheath blight), bacterial blight (bacterial blight) are three major diseases worldwide. At present, the medicaments used for the prevention and control of the three major rice diseases in my country are all chemical agents. Although the control effect is good, the pesticide content in the rice is too high, which will cause harm to the human body, make the human body prone to various diseases, and easily cause various functions of the human body. Immunity is weakened, and long-term consumption of rice with high pesticide residues is more likely to cause various cancers. In addition, drug resistance has emerged in some areas, which has aroused great concern. Therefore, it is of great significance to study suitable ...

Claims

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Application Information

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IPC IPC(8): A01N65/08A01N43/16A01P3/00A61L9/013A23B7/154A61L101/56
Inventor 谷文祥
Owner SOUTH CHINA AGRI UNIV
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