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Emodin methyl ether microemulsion and application thereof
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A technology of emodin methyl ether and microemulsion, which is applied in the field of agricultural biology to achieve the effect of promoting healthy development
Pending Publication Date: 2022-08-02
CHINA AGRI UNIV
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Emodin methyl ether has been reported in the literature and patented technology, which is mainly limited to the field of pesticides. How to solve the water solubility of emodin methyl ether and use it in animal husbandry to replace antibiotics still has many technical problems
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[0030] The invention aims to provide a preparation method of emodin methyl ether microemulsion and its application in preventing and treating diseases caused by drug-resistant bacteria in livestock and poultry.
[0031] The emodin methyl ether microemulsion (emodin methyl ether microemulsion preparation or emodin methyl ether microemulsion) is a microemulsion system composed of an organic solvent and a surfactant. The preferred microemulsion system formulation includes one or more of N,N-dimethylformamide or N,N-dimethylacetamide, ethanol or Tween-20.
[0032] Preferably, the 10% emodin methyl ether microemulsion is made of N,N-dimethylformamide or N,N-dimethylacetamide, absolute ethanol, Tween-20 and water in a volume ratio of 25: The system of 10:1:14 is formulated.
[0041] The preparation of embodiment 1 emodin methyl ether microemulsion
[0042] 1. Composition: Emodin methyl ether 10g, N,N-dimethylformamide or N,N-dimethylacetamide 20ml, 75% ethanol 30ml, add water to 100ml.
[0043] 2. Preparation method:
[0044] 2.1 Weigh the raw and auxiliary materials according to the prescription amount and set aside.
[0045] 2.2 Dissolve emodin methyl ether in N,N-dimethylformamide or N,N-dimethylacetamide, then add 75% ethanol and Tween-20, and after mixing, slowly add water to make up to 100ml.
[0046] 3. Result: The prepared microemulsion was brown, 50% dissolved, and precipitate appeared after standing.
Embodiment 2
[0047] The preparation of embodiment 2 emodin methyl ether microemulsion
[0048] 1. Composition: Emodin methyl ether 10g, N,N-dimethylformamide or N,N-dimethylacetamide 20ml, 95% ethanol 30ml, add water to 100ml.
[0049] 2. Preparation method:
[0050] 2.1 Weigh the raw and auxiliary materials according to the prescription amount and set aside.
[0051] 2.2 Dissolve emodin methyl ether in N,N-dimethylformamide or N,N-dimethylacetamide, then add 95% ethanol, and after mixing, slowly add water to make up to 100ml.
[0052] 3. Result: The prepared microemulsion was brown, 60% dissolved, and precipitate appeared after standing.
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technical field [0001] The invention belongs to the field of agricultural biotechnology, in particular to an emodin methyl ether microemulsion and its application. Background technique [0002] Emodin methyl ether (Physcion), the structure is shown in formula I, anthraquinone compound, CAS registration number is 521-61-9. [0003] Chemical name: 1,8-dihydroxy-3-methoxy-6-methylanthraquinone, molecular formula is C 16 H 12 O 5 , molecular weight 284.26. [0004] [0005] Pure product is yellow needle crystal; Melting point: 203℃~207℃; Vapor pressure (20~25℃): 4.8×10 -11 Pa; Solubility: soluble in benzene, chloroform, pyridine, toluene, slightly soluble in acetic acid and ethyl acetate, insoluble in methanol, ether, acetone, a small amount of emodin methyl ether can slowly dissolve in ethanol and water. Hydrolysis under strong acid conditions and slow photolysis under strong UV light. [0006] Emodin methyl ether is a botanical pesticide extracted from the roots and s...
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