Method for preparing alga inhibitor from barley

A technology of inhibitors and barley, applied in botany equipment and methods, herbicides and algicides, chemicals for biological control, etc., can solve problems such as restricting large-scale use, destroying the beauty of water bodies, and secondary pollution , to achieve good algae inhibition effect, good ecological security and low preparation cost
CN102415416AInactive Publication Date: 2012-04-18ZHEJIANG UNIV
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
ZHEJIANG UNIV
Publication Date
2012-04-18
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention discloses a method for preparing alga inhibitor from a natural plant barley, belonging to the field of water pollution control. The method comprises the following steps of: drying and crushing barley, extracting with ethanol containing water (or low-carbon alcohol containing water) to obtain barley extract liquid; distilling at reduced pressure to obtain an extract A; removing components which can be dissolved in petroleum ether from the extract A; extracting with chloroform (or dichloromethane or diethyl ether) and ethyl acetate (or n-butyl alcohol or acetone) to respectively obtain organic phases B and C; and respectively distilling at reduced pressure to finally obtain alga inhibiting component extracts D and E. The method has the advantages that the method is simple and easy to operate, cost is low, material sources are wide and easy to obtain; moreover, two alga inhibitors with high purity can be obtained at the same time; therefore, the method can be widely used for controlling algal bloom of lakes and reservoirs.
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Description

technical field

[0001] The invention belongs to the field of water body pollution control, and particularly relates to a method for preparing an algae inhibitor from natural plant barley. Background technique

[0002] The rapid development of China in the past 30 years has led to a large amount of nitrogen, phosphorus and other nutrient pollutants directly entering the water body, causing the abnormal reproduction of algae and other aquatic organisms. Many freshwater lakes have rapidly changed from grass-type lakes to algae-type lakes. The coexistence of diatom-dominated and various algae has changed to blue-green algae-dominated, and the ecological balance of the lake has been destroyed. Algae outbreaks are extremely harmful and seriously endanger aquatic ecological security and drinking water safety.

[0003] At present, the commonly used algae control methods are mainly source control, chemical control and biological control. Source control achieves the purpose of funda...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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