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Oligomeric acid iodine as well as preparation method and application thereof

A technology of oligomeric acid and oligomerization, which is applied in the direction of botany equipment and methods, applications, chemicals for biological control, etc., can solve the problems of diseases that do not show the immune function of inducing disease resistance, poor quick effect, and limited application , to achieve the effects of enhancing the ability of induced plant disease resistance, strong contact killing of plant pathogens, and rapid and long-lasting control

Active Publication Date: 2011-02-09
SHANGHAI GUANFA MARINE BIOTECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Oligosaccharide plant inducers, represented by amino oligosaccharins, have been widely used in agricultural production. Recently, they have been registered in the Drug Control Institute of the Ministry of Agriculture for the prevention of plant virus diseases, late blight, fusarium wilt and verticillium wilt. As far as the molecular structure of oligosaccharide plant inducers is concerned, plant diseases can only be prevented by inducing plants to produce disease resistance factors. Therefore, it is often because of different growth periods of plants and climate conditions The influence of factors such as the change of the change of the pathogenic bacteria and the degree of the invasion of the pathogen causes the instability of the ability of this kind of pesticide to prevent the disease.
The application of iodine in agricultural production has great potential. Iodine atoms can strongly inhibit and inactivate plant viral, bacterial and fungal diseases by using its oxidation and sterilization principle at extremely low concentrations. Regulator, which has a good regulatory effect on promoting plant vegetative growth and reproductive growth, but its wide application in planting is limited due to its instability caused by easy sublimation
The German patents DE-2941387 and DE-3060935, which have already obtained the right to grant invention patents, provide polyvinylpyrrolidone iodine (PVP-iodine) as a disinfectant only used in the medical and health field due to cost issues, and the amino acid complexation invented by Chinese patent CN1207271C Iodine, as an amino acid as a nutrient, does not exhibit the immunological function of inducing disease resistance to diseases, so it has been partially promoted and applied in the aquaculture industry, but there is no report of widespread application in the planting industry

Method used

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  • Oligomeric acid iodine as well as preparation method and application thereof
  • Oligomeric acid iodine as well as preparation method and application thereof
  • Oligomeric acid iodine as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] Take 10 grams of oligogluconic acid and 5 grams of iodine in a 250 milliliter round bottom flask, add 1 milliliter of glycerol and 84 milliliters of water, stir and heat to 50 ° C, react for 10 hours, stop heating, filter to obtain a reddish-brown liquid.

[0020] The structure of the reddish-brown liquid according to NMR and infrared analysis is:

[0021]

[0022] Among them, m=6~10; n=6~10

[0023] The structures of R1, R2, R3, and R4 are all:

[0024]

[0025] Select a place where the occurrence of cucumber downy mildew has been severe over the years, and cucumber downy mildew occurs naturally during the test. Choose flat terrain, consistent soil properties, uniform fertility and medium plots to plant cucumbers, and set up 4 treatments:

[0026] Treatment 1 is to dilute 69% Anke manganese zinc 800 times in the early stage of disease onset, spray 3 times, with an interval of 5 to 7 days, and the dosage is 50 grams per mu;

[0027] Treatment 2 is to dilute 75%...

Embodiment 2

[0036] Take 12 grams of oligomeric N-acetylglucosamine acid and 11 grams of iodine in a 250 ml round bottom flask, add 40 ml of ethanol and 40 ml of water, stir and heat to 65 ° C, react for 6 hours, then heat up to 80 ° C, remove part ethanol and uncomplexed iodine to obtain a reddish-brown liquid.

[0037] The structure of the reddish-brown liquid according to NMR and infrared analysis is:

[0038]

[0039] Among them, m=6~10; n=6~10

[0040] The structures of R1, R2, R3, and R4 are all:

[0041]

[0042] Rice blast was selected to be an experimental site where the incidence of rice blast was relatively severe over the years, and rice blast naturally occurred during the experiment. Choose flat terrain, consistent soil properties, uniform fertility and medium plots to plant rice, and set up 4 treatments:

[0043] Treatment 1 is to dilute 50% carbendazim wettable powder 1000 times in the early stage of disease onset, and spray 3 times with an interval of 5 to 7 days, ...

Embodiment 3

[0055] Take 18 grams of potassium oligogluconate and 11 grams of iodine in a 250 milliliter round bottom flask, add 1 milliliter of glycerol and 80 milliliters of water, stir and heat to 70 ° C, react for 6 hours, stop heating, filter, test the iodine content, A reddish-brown liquid was obtained.

[0056] The structure of the reddish-brown liquid according to NMR and infrared analysis is:

[0057]

[0058] Among them, m=6~10; n=6~10

[0059] The structures of R1, R2, R3, and R4 are all:

[0060]

[0061]In the tomato solar greenhouse in the experimental area of ​​Anci County, Langfang City, Hebei Province, the control experiment was carried out during the flowering period, that is, the period when tomato gray mold was in full bloom, and 3 treatments were set up:

[0062] Treatment 1 is to dilute 20% of the iodine oligomeric acid prepared above by 1500 times during the flowering stage, and spray 3 times at intervals of 5 to 7 days, with an amount of 35 grams per mu;

...

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Abstract

The invention discloses oligomeric acid iodine as well as a preparation method and application thereof. The molecular structural formula of the provided oligomeric acid iodine is shown in the formula I, wherein m>=2, n>=2, and R1, R2, R3 and R4 are oligomeric glucose (acid) groups, oligomeric N-acetyl glucose (acid) groups, oligomeric D-amino glucose (acid) groups, oligomeric galactose (acid) groups, oligomeric gulose (acid) groups, oligomeric mannose (acid) groups or oligomeric xylose (acid) groups. The preparation method of the oligomeric acid iodine comprises the following steps of: mixing oligomeric acid or oligomeric acid salt with iodine in a mixed solvent of water and alcohol, stirring, controlling the temperature at 50-70 DEG C, and reacting to obtain the oligomeric acid iodine. The oligomeric acid iodine ensures the stability of iodine in the structural matter and has extremely strong effect of contact skilling plant pathogenic bacteria, keeps and strengthens the plant disease resistance induced by oligose, and has rapid and persistent effect for controlling plant diseases. The formula I is disclosed in the specification.

Description

technical field [0001] The invention relates to an iodine oligomeric acid, a preparation method and application thereof. Background technique [0002] Oligosaccharide plant inducers, represented by amino oligosaccharins, have been widely used in agricultural production. Recently, they have been registered in the Drug Control Institute of the Ministry of Agriculture for the prevention of plant virus diseases, late blight, fusarium wilt and verticillium wilt. As far as the molecular structure of oligosaccharide plant inducers is concerned, plant diseases can only be prevented by inducing plants to produce disease resistance factors. Therefore, it is often because of different growth periods of plants and climate conditions The influence of factors such as the change of the change of the pathogen and the degree of the invasion of the pathogen causes the instability of the disease prevention ability of this kind of pesticide. At the same time, due to its poor quick effect, it li...

Claims

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Application Information

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IPC IPC(8): A01N43/16A01P3/00C08B37/00
Inventor 王士奎刘卫萍王金环张志民胡雪芳
Owner SHANGHAI GUANFA MARINE BIOTECH CO LTD
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