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Prepn process of theasaponin sterilant for preventing and control rat plague

A tea saponin, rodent pest technology, applied in pest control, botanical equipment and methods, chemicals for biological control, etc. problems, to achieve the effect of increasing feed intake, increasing water insolubility and mechanical strength, and reducing irritation

Inactive Publication Date: 2007-06-06
FUZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the current rodent pest control work, chemical control is widely used, and chemical rodenticides have become the main means to solve this problem, but there are disadvantages such as long residual period, serious environmental pollution, and easy occurrence of secondary poisoning. Huge hazards to health and survival
Moreover, the existing rodenticides in my country are mainly to increase the death rate of rats, but none of them have persistent effect, and the longest time of low density after rodenticide is only maintained for about one year

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Put 2.6 kg of tea meal powder through a 30-mesh sieve into an extraction tank, use 40% methanol-acetone (3:1) aqueous solution of 10 times the dry weight of tea meal powder (W / W), and reflux at 70°C Extract 3 times, 2 hours each time, combine the extracts, and filter; the filtrate uses a polysulfone membrane with a molecular weight cut-off of 50,000, and the membrane is separated and removed under the operating pressure of 0.5MPa; after removing macromolecular impurities such as proteins and polysaccharides, the filtrate is selected The polysulfone membrane with a molecular weight cut-off of 3000, under the operating pressure of 1.5MPa, the membrane is separated and concentrated into a concentrated solution of 10-15 degrees Baume (60°C); add 4% sodium alginate aqueous solution (W / W), fully mixed evenly, using a nozzle with an inner diameter of 4mm, with a flow rate of 30 drops / min, the above-mentioned mixed solution was dropped into an equal weight of 4% calcium chlorid...

Embodiment 2

[0028] Put 2.4 kg of tea meal powder through a 30-mesh sieve into an extraction tank, extract 2 times at 50°C with 30% aqueous methanol solution of 15 times the dry weight of tea meal powder (W / W), for 3 hours each time, The extracts were combined and filtered; the filtrate was selected from a polysulfone membrane with a molecular weight cut-off of 60,000, and the membrane was separated to remove impurities under the operating pressure of 0.25 MPa; after removing macromolecular impurities such as proteins and polysaccharides, the filtrate was selected from an aromatic polyamide membrane with a molecular weight cut-off of 500 , under the operating pressure of 1.5MPa, membrane separation and concentration into a concentrated solution of 10-15 degrees Baume (60°C); add 4% sodium alginate aqueous solution (W / W) equal to the weight of the concentrated solution, mix well, and use With a nozzle with an inner diameter of 4mm, drop the above mixture into an equal weight of 4% calcium ch...

Embodiment 3

[0030]Put 3.2kg of tea meal powder through a 30-mesh sieve into an extraction tank, use 50% methanol aqueous solution of 5 times the dry weight of tea meal powder (W / W), reflux extraction at 80°C for 1 hour, filter, and select the filtrate The polysulfone membrane with a molecular weight cut-off of 80,000 is used to separate and remove impurities under the operating pressure of 0.1MPa; after removing macromolecular impurities such as proteins and polysaccharides, the filtrate is selected from a sulfonated polysulfone membrane with a molecular weight cut-off of 500, and the membrane is used under the operating pressure of 1.5MPa The lower membrane is separated and concentrated into a concentrated solution of 10-15 degrees Baume (60°C); add 4% sodium alginate aqueous solution (W / W) equal in weight to the concentrated solution, mix well, and use a nozzle with an inner diameter of 4mm to At a flow rate of 30 drops / min, drop the above mixed solution into an equal weight of 4% calciu...

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Abstract

The present invention is preparation process of theasaponis sterilant for preventing and controlling rat plague. The theasaponis sterilant is prepared with tea seed cake as main material, and through extracting with water solution of hydrophilic solvent at 50-80 deg.c for 1-3 times, merging the extracted liquid and filtering; membrane separating the filtrate to eliminate impurity and concentrating to 10-15 Baume degree (60 deg.c); adding 4 wt% concentration water solution of sodium alginate in the same weight as the concentrate; dropping the mixture into 4 wt% concentration water solution of calcium chloride in the same weight; stilling at 4-10 deg.c for 8-12 hr to cure and shape; sieving grains of diameter 4-6 mm and drying to obtain the theasaponis sterilant. The preparation process is novel, simple, efficient and low in production cost, and the theasaponis sterilant has high efficiency in preventing and controlling rat plague, low toxicity and other advantages.

Description

technical field [0001] The invention relates to a method for extracting tea saponin medicinal active ingredients from tea dregs waste to prepare an environment-friendly tea saponin sterile agent for rodent prevention and control. Background technique [0002] Rodent infestation is a serious biological disaster, which has attracted great attention from all over the world. At present, rodent damage has become a major problem that endangers my country's ecological environment, and effective control of rodent damage is one of the key links to ensure the sustainable development of my country's agriculture and animal husbandry. [0003] Rodent control is a complex comprehensive management project, mainly including chemical control, biological control, sterile agent control and mechanical rodent control and other means. In the current rodent pest control work, chemical control is widely used, and chemical rodenticides have become the main means to solve this problem, but there are...

Claims

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Application Information

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IPC IPC(8): A01N65/00A01P23/00A01N65/08
Inventor 陈剑锋
Owner FUZHOU UNIV
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