Amino acid compound and antibacterial composition and application thereof

An amino acid and compound technology, applied in the field of pesticides, can solve problems such as adverse effects on normal plant growth soil function, copper accumulation, and difficult biodegradation, and achieve good bactericidal effects.

Active Publication Date: 2018-01-12
吴文君 +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Inorganic copper preparations mainly composed of copper hydroxide and copper sulfate have been used for more than 200 years, but because they are difficult to be biodegraded, long-term and large-scale use has caused the accumulation of copper in the soil, which will affect the normal growth of plants and adverse effect on soil function

Method used

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  • Amino acid compound and antibacterial composition and application thereof
  • Amino acid compound and antibacterial composition and application thereof
  • Amino acid compound and antibacterial composition and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] Synthesis of copper L-pyroglutamate

[0029] Weigh 65.0g (0.5Mol) of L-pyroglutamic acid into a 1000mL round bottom flask, add 325mL of methanol, stir to dissolve. Use 20% sodium hydroxide solution to adjust the pH value of the L-pyroglutamine solution to 7-8, weigh 42.5g (0.25Mol) of copper chloride dihydrate and put it into a 500mL beaker, add 200mL of methanol, stir to dissolve and transfer to 250mL Dropping funnel, under stirring, slowly add the copper chloride solution dropwise to the L-pyroglutamic acid solution, stir for 1 hour after the dropwise addition, rotary evaporate to recover methanol 400mL, let cool, filter, wash with 200mL absolute alcohol Filter the residue to get copper L-pyroglutamate.

Embodiment 2

[0031] This example gives two preferred copper L-pyroglutamate soluble powders.

[0032] Weigh 500kg of copper L-pyroglutamate, 50kg of lignosulfonate Ufoxane 3A (dispersant), 30kg of sulfate K-12 (wetting agent), 420kg of ammonium sulfate (filler), mix the above materials with a small ball mill Pulverize or pulverize with a jet mill to obtain 50% L-copper pyroglutamate soluble powder.

[0033] Weigh 400kg of copper L-pyroglutamate, polycarboxylate TERSPERSE 2700 (dispersant) 30kg, sulfate K-12 (wetting agent) 30kg, sulfonate BX (wetting agent) 20kg, sodium sulfate (filler) ) 500kg, glucose (bonding agent) 20kg, pulverize with jet mill after above-mentioned material mixing, obtain 40% L-copper pyroglutamate soluble powder.

Embodiment 3

[0035]Pot control experiment of cucumber downy mildew.

[0036] There are 2 cucumber seedlings per pot, the variety is Changchun Mici, and the test is carried out when the true leaves reach 20-15 leaves. The test set L-pyroglutamic acid 500ppm, 1000ppm; L-copper pyroglutamate 125ppm, 250ppm, 500ppm. Prepare the liquid medicine with clear water containing 0.1% Tween-20, and use 0.1% Tween-20 water as a control. For every treatment of 1 bowl, repeat 5 bowls. Spray with a hand sprayer for protection. 24 hours after spraying, inoculate the sporangia liquid of cucumber downy mildew fungus and keep it moisturized. After 7 days, the control was obviously onset, the disease index was investigated, and the control effect was calculated. The results are shown in Table 1.

[0037] Table 1 Potted plant control cucumber downy mildew test results

[0038]

[0039] The results in Table 1 show that copper L-pyroglutamate significantly improves the control effect on cucumber downy mild...

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Abstract

The invention discloses an amino acid compound. The amino acid compound is formed through coordination of L-pyroglutamic acid and copper ions, and is of a structure with a formula I. The invention also provides an amino acid antibacterial compound, and antibacterial active components of the amino acid antibacterial compound comprise the amino acid compound. The compound disclosed by the inventioncan be prepared into soluble powder allowed to be used in agriculture. The invention also provides application of the amino acid compound for preventing and controlling crop diseases, and has better prevention and control effects for cucumber downy mildew, potato late blight and grape downy mildew.

Description

technical field [0001] The invention belongs to the technical field of pesticides, and relates to an amino acid compound and a bactericidal composition containing the amino acid compound. The invention also relates to the agricultural application of the amino acid compound. Background technique [0002] According to the statistics of the Food and Agriculture Organization of the United Nations, more than 10% of the world's grain and cotton production is lost due to crop diseases all the year round. In my country, especially in the production of vegetables and fruits, plant diseases are perennially harmful, and long-term dependence on chemical synthetic fungicides for prevention and control, and the dosage of pesticides is increasing. The bigger it is, the higher the frequency of pesticide application. As a result, the drug resistance of pathogenic bacteria doubles, the control effect decreases, and the pesticide residues exceed the standard, which seriously restricts the high-...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07D207/28A01N43/36A01N59/20A01P3/00A01P21/00
Inventor 吴文君张继文刘伟
Owner 吴文君
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