Process for preparing natural herbicide by using corn protein powder

A corn gluten meal, natural herbicide technology, applied in herbicides and algicides, chemicals for biological control, applications, etc., can solve problems such as shortage and waste of resources, reduce production costs, and have obvious market advantages. , the effect of facilitating the development of applications

Inactive Publication Date: 2010-09-29
天津实发中科百奥工业生物技术有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, because the protein contained in it lacks essential amino acids such as lysine (Lys) and tryptophan (Trp), and the finished product has a special taste and color; , a huge waste of resources

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] Mix 1kg of corn gluten meal and water at a ratio of 1:19, and adjust the pH to about 6.0. Add 0.1% dry basis (w / w) amylase and liquefy with a jet liquefier at a temperature of 137°C. The heated feed liquid is cooled to 60°C. Adjust to pH 4. Add 0.01% dry basis (w / w) glucoamylase, keep the feed solution at 60°C for 8 hours, then filter and discard the filtrate. The filter cake was reslurried with water to make a slurry containing 5% (w / w) solids. Adjust the pH of the slurry to 4.5, add 0.1%w / w cellulase, keep the feed solution at 50°C for 2 hours, then filter and discard the filtrate; add water to the filter cake and re-beat to make a slurry containing 5%w / w solids ; Adjust the pH value to 8.5 with calcium hydroxide, add 0.1% dry basis (w / w) protease, and keep the feed solution at 50°C for 2 hours. Then adjust the pH value of the feed liquid to 6.0, use calcium phosphate to flocculate as usual, remove insoluble matter, take the supernatant, and spray dry the supernat...

Embodiment 2

[0028] Mix 1 kg of corn gluten meal and water in a ratio of 1:7, and adjust the pH to about 7.0. Add 0.5% dry basis (w / w) amylase and liquefy with a jet liquefier at a temperature of 157°C. The heated feed liquid is cooled to 60°C. Adjust pH to 4.5. Add 0.05% dry basis (w / w) glucoamylase, keep the feed solution at 60°C for 12 hours, then filter and discard the filtrate. The filter cake was repulped with water to make a slurry with 15% (w / w) solids. Adjust the pH of the slurry to 5.0, add 0.5%w / w cellulase, keep the feed solution at 55°C for 4 hours, then filter and discard the filtrate; add water to the filter cake and re-beat to make a slurry containing 15%w / w solids ; Use calcium hydroxide to adjust the pH value to 7.0, add 0.5% dry basis (w / w) neutral protease, and keep the feed solution at 55°C for 4 hours. Then the pH value of the feed liquid is adjusted to 6.4, the insoluble matter is removed by flocculation with calcium phosphate, the supernatant is taken, and the s...

Embodiment 3

[0032] Mix 1 kg of corn gluten meal and water in a ratio of 1:4, and adjust the pH to about 8.0. Add 1.0% dry basis (w / w) amylase and liquefy with a jet liquefier at a temperature of 171°C. The heated feed liquid is cooled to 60°C. Adjust pH to 5.0. Add 0.1% dry basis (w / w) glucoamylase, keep the feed solution at 60°C for 16 hours, then filter and discard the filtrate. The filter cake was repulped with water to make a slurry with 20% (w / w) solids. Adjust the pH of the slurry to 5.5, add 1% w / w cellulase, keep the feed liquid at 60°C for 6 hours, then filter and discard the filtrate; add water to the filter cake and re-beat to make a slurry containing 20% ​​w / w solids ; Adjust the pH value to 9.0 with calcium hydroxide, add 1.0% dry basis (w / w) protease, and keep the feed solution at 60°C for 6 hours. Then the pH value of the feed liquid is adjusted to 6.8, the insoluble matter is removed by flocculation with calcium phosphate, the supernatant is taken, and the supernatant ...

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PUM

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Abstract

The invention relates to a process for preparing natural herbicide by using corn protein powder, comprising the following implementation steps: (1) mixing the corn protein powder and water, and then regulating the pH of slurry into 6.0-8.0; (2) adding amylase and 0.1-1.0 % of a dry base to the slurry, liquefying by a jet liquefier at the temperature of 137 DEG C-171 DEG C, cooling the heated feed liquid to the temperature of 60 DEG C, and regulating pH into 4.0 to 5.0; (3) adding glucoamylase and 0.01-0.1% of the dry base, and insulating the feed liquid at 60 DEG C for 8-16 hours to obtain the slurry containing 5-20% of a solid; (4) adding cellulase and 0.1%-1.0% of the dry base, and insulating the feed liquid at 50-60 DEG C for 2-6 hours to obtain the slurry containing 5-20% of the solid; (5) adding protease and 0.1%-1% of the dry base, insulating the feed liquid at 50-60 DEG C for 2-6 hours, regulating the pH of the feed liquid into 6.0-6.8, using calcium phosphate for flocculation and then taking supernate; (6) drying the supernate to prepare into a corn protein powder hydrolysate having 85-95% of protein and 10%-15% of water-soluble nitrogen; and (7) the amount of the corn protein hydrolysate is 0.05-10g / dm<2> in soil. The process has the advantages of simple preparation process and obvious practical effect.

Description

technical field [0001] The invention relates to a process for processing corn gluten, in particular to a process for preparing natural herbicides using corn gluten powder. Background technique [0002] The widespread use of chemical herbicides has played an important role in controlling the invasion and damage of weeds to farmland and urban lawns. However, the extensive use of traditional chemical pesticides has led to the enhancement of weed resistance and caused environmental pollution, such as soil, groundwater, Residues of chemical herbicides in agricultural products are increasing year by year, endangering the safety of humans and animals. Therefore, it is imperative to develop natural, nontoxic and degradable herbicides. [0003] Corn gluten meal (Cornglutenmeal, CGM) is a by-product of corn kernels producing starch or extracting ethanol. Its protein content is 60%-70%, and the rest is 20% starch and about 10% cellulose, vitamin A, etc. It also contains 15 kinds of i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01N63/00A01P13/00C12P21/06
Inventor 赵琼赵健徐勇虎王祥河何雨青
Owner 天津实发中科百奥工业生物技术有限公司
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