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Preparation process of theasaponin sterilant for preventing and control rat plague

A tea saponin and rodent pest technology, which is applied in the fields of pest control, botanical equipment and methods, and chemicals for biological control, etc. and other problems, to achieve the effect of increasing water insolubility and mechanical strength, improving purity and quality, and reducing preparation costs

Inactive Publication Date: 2008-07-09
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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  • Preparation process of theasaponin sterilant for preventing and control rat plague
  • Preparation process of theasaponin sterilant for preventing and control rat plague

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

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

Embodiment 2

[0028] Put 2.4 kg of tea seed powder that has passed through a 30-mesh sieve into an extraction tank, and extract 2 times at 50°C with a 30% methanol aqueous solution of 15 times the dry weight (W / W) of the tea seed powder, for 3 hours each time. The extracts were combined and filtered; the filtrate was 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 removal of 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, the membrane is separated and concentrated into a concentrated solution of 10 to 15 Baume degrees (60 ° C); add 4% sodium alginate aqueous solution (W / W) equal to the weight of the concentrated solution, mix well, and use A nozzle with an inner diameter of 4 mm, at a flow rate of 30 drops / min, drop th...

Embodiment 3

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

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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 preparing an environment-friendly tea saponin sterile agent for rodent control by extracting tea saponin medicinal active components from tea meal waste. Background technique [0002] Rat infestation is a serious biological disaster, which has attracted great attention from all over the world. At present, rodent infestation has become a major problem endangering my country's ecological environment. Effective control of rodent infestation 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, which mainly includes chemical control, biological control, sterile agent control and mechanical rodent control. In the current rodent control work, chemical control is widely used, and chemical rodenticides have become the main means to solve this problem, but there are shortcomings such as long resi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A01N65/00A01P23/00A01N65/08
Inventor 陈剑锋
Owner FUZHOU UNIV
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