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Algicide and preparation method thereof

A technology of algaecide and organic extractant, applied in herbicides and algicides, botanical equipment and methods, biocides, etc., can solve problems such as unsuitable fish and vegetable coculture systems, chemical pollution of algaecides, etc. To achieve the effect of improving the inhibitory effect, prolonging the action time, and enhancing the inhibitory effect

Inactive Publication Date: 2017-11-28
SICHUAN AGRI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Aiming at the above-mentioned deficiencies in the prior art, the present invention provides an algaecide and its preparation method, which can effectively solve the problem that the existing algaecide has chemical pollution and is not suitable for aquaculture systems

Method used

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  • Algicide and preparation method thereof

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Effect test

Embodiment 1

[0027] A preparation method of algicide, comprising the following steps:

[0028] (1) Configure YPD medium, add 4% chitin powder and 5% sodium chloride by weight of the medium, and then inoculate 0.5% yeast by weight of the medium, culture at 25°C for 48 hours, and extract Yeast extracellular substance, spare;

[0029] (2) Crush the root of water hyacinth, add organic extractant, extract 2~3 times, 3 hours each time, then combine the extracts, concentrate under reduced pressure, evaporate the organic solvent to obtain the extract; wherein, organic extractant and water hyacinth The volume-to-weight ratio of the powder is 6:1; the organic extractant includes acetone and ethyl acetate, and the volume ratio of the two is 5:0.8;

[0030] (3) Mix the yeast extracellular substance and the extract, and add copper sulfate and 5% calcium chloride accounting for 10% by weight of the yeast extracellular substance, stir evenly, then add it to polycaprolactone, and It is prepared as a gra...

Embodiment 2

[0032] A preparation method of algicide, comprising the following steps:

[0033] (1) Configure YPD medium, add 2.4% chitin powder and 3.3% sodium chloride by weight of the medium, and then inoculate 0.5% yeast by weight of the medium, culture at 25°C for 40 hours, and extract Yeast extracellular substance, spare;

[0034] (2) Crush the root of water hyacinth, add organic extractant, extract 2~3 times, 3 hours each time, then combine the extracts, concentrate under reduced pressure, evaporate the organic solvent to obtain the extract; wherein, organic extractant and water hyacinth The volume-to-weight ratio of the powder is 5:1; the organic extractant includes acetone and ethyl acetate, and the volume ratio of the two is 3:0.8;

[0035] (3) Mix the yeast extracellular substance and the extract, add 5.6% copper sulfate and 4.2% calcium chloride accounting for the weight of the yeast extracellular substance, stir evenly, then add it to the polycaprolactone, and It is prepared ...

Embodiment 3

[0037] A preparation method of algicide, comprising the following steps:

[0038] (1) Configure YPD medium, add 2% chitin powder and 3% sodium chloride by weight of the medium, and then inoculate 0.5% yeast by weight of the medium, culture at 25°C for 42 hours, and extract Yeast extracellular substance, spare;

[0039](2) Crush the root of water hyacinth, add organic extractant, extract 3 times, each time for 2 hours, then combine the extracts, concentrate under reduced pressure, evaporate the organic solvent to obtain the extract; wherein, the organic extractant and water hyacinth powder The volume-to-weight ratio is 6:1; the organic extractant includes acetone and ethyl acetate, and the volume ratio of the two is 3:1;

[0040] (3) Mix the yeast extracellular substance and the extract, and add copper sulfate and 5% calcium chloride accounting for 10% by weight of the yeast extracellular substance, stir evenly, then add it to polycaprolactone, and It is prepared as a granula...

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Abstract

The invention discloses an algicide and a preparation method thereof. The preparation method comprises the following steps: (1) culturing a yeast, and extracting an extracellular substance of the yeast; (2) extracting water hyacinth allelopathic chemicals by using an organic extraction agent; and (3) preparing the algicide. The algicide prepared by using the method disclosed by the invention is capable of effectively inhibiting growth of algae in water bodies, and is free of chemical pollution.

Description

technical field [0001] The invention belongs to the technical field of biological environmental protection, and in particular relates to an algicide and a preparation method thereof. Background technique [0002] Hydroponic vegetables is a form of soilless cultivation, which refers to a new vegetable cultivation technology using nutrient solution, which is one of the most advanced cultivation technologies in the world today. Due to the existence of many advantages, hydroponic vegetables have developed rapidly. Hydroponic vegetables are not only to provide high-quality vegetables, but also can be made into ornamental bonsai to beautify the environment. Most of the vegetables that can be used as ornamental bonsai are leafy vegetables, which have the characteristics of fast growth, strong ornamental value, and rich varieties. This kind of hydroponic vegetables used in indoor greening can adjust the temperature and humidity through the physiological function of plants, and mai...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01N63/04A01N59/20A01N59/08A01N43/16A01N33/06A01P13/00
CPCA01N33/06A01N43/16A01N59/08A01N59/20A01N63/30A01N2300/00
Inventor 贺忠群田珂钟超陈延谢永东仰路希
Owner SICHUAN AGRI UNIV