A granule virus dry suspending agent and a preparing method thereof

A granular virus and dry suspension technology, which is applied in botany equipment and methods, insecticides, biocides, etc., can solve the problems of virus inactivation, unsuitability for industrial application, high energy consumption and high cost, and improve the formulation performance, not easy to cause phytotoxicity, and save the cost of adjuvants

Active Publication Date: 2017-06-20
HENAN JIYUAN BAIYUN IND +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Because microbial viruses are more sensitive to temperature, there is often a defect of inactivating the virus during the spray drying process. Therefore, there is no microbial virus pesticide that is granulated into a dry suspension by pressurized spray drying. For example, Chinese patent CN101278680A discloses A water-dispersible granule dosage form insect baculovirus insecticide is prepared, and the dry suspension dosage form insect baculov...

Method used

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  • A granule virus dry suspending agent and a preparing method thereof
  • A granule virus dry suspending agent and a preparing method thereof
  • A granule virus dry suspending agent and a preparing method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0038] The dry suspension of Plutella xylostella granule virus in this embodiment is prepared by spray drying the Plutella xylostella granule virus water suspension, wherein the Plutella xylostella granule water suspension is made of the following components in percentage by weight: virus content 3.0×10 12 OB Plutella xylostella granule virus stock solution 20%, sodium lignosulfonate 7%, fatty alcohol polyoxyethylene ether 2%, ammonium sulfate 15%, trehalose 15%, nano-titanium dioxide 15%, white carbon black 26%.

[0039] The preparation method of the present embodiment Plutella xylostella granule virus dry suspension, the specific operation steps are:

[0040] 1) Take 2.0kg of diamondback moth granule virus stock solution, 0.7kg of sodium lignosulfonate, 0.2kg of fatty alcohol polyoxyethylene ether, 1.5kg of ammonium sulfate, 1.5kg of trehalose, 1.5kg of nano-titanium dioxide and 2.6kg of white carbon black, Mix evenly in a stirring tank, grind and homogenize through a sand ...

Embodiment 2

[0044] The dry suspension of Plutella xylostella granule virus in this embodiment is prepared by spray drying the Plutella xylostella granule virus water suspension, wherein the Plutella xylostella granule water suspension is made of the following components in percentage by weight: virus content 2.8×10 12 OB Plutella xylostella granulosa virus stock solution 22%, polycarboxylate D1001 6%, sodium lauryl sulfate K12 3%, calcium chloride 14%, modified starch 8%, sucrose 4%, nano-zinc oxide 14% , Kaolin 29%.

[0045] The preparation method of the present embodiment Plutella xylostella granule virus dry suspension, the specific operation steps are:

[0046] 1) Take Plutella xylostella granulosa virus stock solution 2.2kg, polycarboxylate D1001 0.6kg, sodium lauryl sulfate K120.3kg, calcium chloride 1.4kg, modified starch 0.8kg, sucrose 0.4kg, zinc oxide 1.4kg , kaolin 2.9kg, mix homogeneously in stirring tank, grind through sand mill, homogenize to the average particle diameter ...

Embodiment 3

[0050] The dry suspension of Plutella xylostella granule virus in this embodiment is prepared by spray drying the Plutella xylostella granule virus water suspension, wherein the Plutella xylostella granule water suspension is made of the following components in percentage by weight: virus content 2.6×10 12 OB / g Plutella xylostella granulosa virus stock solution 24%, polycarboxylate TERSPERSE2700 5%, sulfonate TERWET1004 4%, ammonium sulfate 7%, urea 6%, maltodextrin 14%, fluorescent whitening agent 12 %, bentonite 28%.

[0051] The preparation method of the present embodiment Plutella xylostella granule virus dry suspension, the specific operation steps are:

[0052] 1) Take Plutella xylostella granulosa virus stock solution 2.4kg, polycarboxylate TERSPERSE2700 0.5kg, sulfonate TERWET1004 0.4kg, ammonium sulfate 0.7kg, urea 0.6kg, maltodextrin 1.4kg, fluorescent whitening agent 1.2kg , bentonite 2.8kg, mix homogeneously in mixing tank, grind through sand mill, homogenize to ...

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Abstract

The invention relates to the technical field of biopesticides, and particularly relates to a granule virus dry suspending agent and a preparing method thereof. The dry suspending agent is mainly prepared by subjecting a granule virus aqueous suspending agent to pressurized spray drying and fluid-bed granulation, wherein a hot-wind inlet temperature of spray drying is 130-150 DEG C, an outlet temperature is 70-90 DEG C, and the temperature of a fluid bed is 50-70 DGE C. The granule virus aqueous suspending agent comprises a spray drying protective agent. Through setting temperature parameters of spray drying, and combining the spray drying protective agent added into the granule virus aqueous suspending agent, preparation of the dry suspending agent by adopting a spray drying wet-method granulation process is achieved, defects of dry-method granulation are overcome, the prepared dry suspending agent has high pest killing activity, good suspension, dispersing and disintegration properties, the suspending rate of the dry suspending agent is greater than 85%, dispersibility of the dry suspending agent is greater than 85%, the dry suspending agent has loose granules and is easy to disintegrate, and killing toxicity for corresponding pests can be 90% or above.

Description

technical field [0001] The invention relates to the technical field of biopesticides, in particular to a granular virus dry suspension and a preparation method thereof. Background technique [0002] Lepidoptera pests such as diamondback moth, cabbage caterpillar and codling moth are the main pests of fruits and vegetables. At present, there are many control methods for these pests, such as agricultural control, physical control, chemical control and so on. Chemical control is still one of the main methods. For example, for the prevention and control of diamondback moth, there are methamectin emamectin, chlorpyrifos, chlorantraniliprole, beta-cypermethrin, abamectin, BT, etc. on the domestic and foreign markets. However, in actual production, due to the continuous, frequent, and high-dose use of some traditional chemical agents, the problem of pest resistance is becoming more and more serious, and the control results are also deteriorating. Lost edible value, caused irrepar...

Claims

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Application Information

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IPC IPC(8): A01N63/02A01N25/14A01P7/00A01P7/04
CPCA01N25/14A01N63/10A01N2300/00
Inventor 赵亚斌程清泉方分分秦启联张寰李瑄张继红王红托苗麟周桂灵黄江昆翟建平翟金花
Owner HENAN JIYUAN BAIYUN IND
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