Medicine for topical wound treatment

1 . A preparation method of a plant extract using a plant composition for wound treatment, wherein the plant composition comprises: tea leaves, lotus leaves, Galla chinensis, Stevia rebaudiana, Cyclocarya paliurus, Gynura divaricata, Taraxacum mongolicum , and Solanum lycopersicum ; and the preparation method comprises:

step (1), crushing a mixture of the tea leaves, the lotus leaves, the Galla chinensis , the Stevia rebaudiana , the Cyclocarya paliurus , the Gynura divaricata , the Taraxacum mongolicum and the Solanum lycopersicum prepared according to a ratio to obtain a crushed mixture, wrapping the crushed mixture in a gauze and adding sodium carbonate (Na 2 CO 3 ) to obtain a mixture to be treated, followed by boiling the mixture to be treated with ethanol to collect a first extraction solution, than washing the gauze wrapped with the mixture after the boiling multiple times using the ethanol to obtain a washing solution, and adding the washing solution into the first extraction solution to obtain a first target extraction solution;

step (2), concentrating the first target extraction solution to obtain a concentrated extraction solution, cooling the concentrated extraction solution to a room temperature, performing fluid extraction 1-3 times on the concentrated extraction solution after cooling with chloroform to obtain a second extraction solution and an aqueous layer, extracting the aqueous layer 1-3 times with ethyl acetate to obtain an extraction solution of the aqueous layer, and combining the second extraction solution and the extraction solution of the aqueous layer to obtain a second target extraction solution; and

step (3), distilling the second target extraction solution under a reduced pressure until the second target extraction solution is concentrated to be a solid extract, cooling the solid extract to a room temperature, and freeze-drying the solid extract after cooling to obtain a plant extract in a form of powder.

2 . A preparation method of a plant extract using a plant composition for wound treatment, wherein the plant composition comprises: tea leaves with a mass percentage in a range of 10%-40%, lotus leaves with a mass percentage in a range of 9%-30%, Galla chinensis with a mass percentage in a range of 9%-20%, Stevia rebaudiana with a mass percentage in a range of 9%-20%, Cyclocarya paliurus with a mass percentage in a range of 9%-20%, Gynura divaricate with a mass percentage in a range of 9%-20%, Taraxacum mongolicum with a mass percentage in a range of 9%-20%, and Solanum lycopersicum with a mass percentage in a range of 5%-20%; and the preparation method comprises:

step (1), crushing a mixture of the tea leaves, the lotus leaves, the Galla chinensis , the Stevia rebaudiana , the Cyclocarya paliurus , the Gynura divaricata , the Taraxacum mongolicum and the Solanum lycopersicum prepared according to a ratio to obtain a crushed mixture, wrapping the crushed mixture in a gauze and adding sodium carbonate to obtain a mixture to be treated, followed by boiling the mixture to be treated with ethanol to collect a first extraction solution, than washing the gauze wrapped with the mixture after the boiling multiple times using the ethanol to obtain a washing solution, and adding the washing solution into the first extraction solution to obtain a first target extraction solution;

step (2), concentrating the first target extraction solution to obtain a concentrated extraction solution, cooling the concentrated extraction solution to a room temperature, performing fluid extraction 1-3 times on the concentrated extraction solution after cooling with chloroform to obtain a second extraction solution and an aqueous layer, extracting the aqueous layer 1-3 times with ethyl acetate to obtain an extraction solution of the aqueous layer, and combining the second extraction solution and the extraction solution of the aqueous layer to obtain a second target extraction solution; and

step (3), distilling the second target extraction solution under a reduced pressure until the second target extraction solution is concentrated to be a solid extract, cooling the solid extract to a room temperature, and freeze-drying the solid extract after cooling to obtain a plant extract in a form of powder.

3 . The preparation method as claimed in claim 1 , wherein a mass ratio of the crushed mixture to the sodium carbonate is in a range of 5-10:1-2.

4 . The preparation method as claimed in claim 2 , wherein a mass ratio of the crushed mixture to the sodium carbonate is in a range of 5-10:1-2.