Nepeta nepeta volatile oil microcapsules and preparation method
A technology of volatile oil and microcapsules of Nepeta mustard, applied in the directions of botanical equipment and methods, biocides, fungicides, etc. Stability and availability, low environmental impact
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Embodiment 1
[0019] Accurately weigh 80 g of β-cyclodextrin, dissolve in 800 mL of distilled water at 60° C., and stir on a magnetic stirrer to obtain an aqueous solution of β-cyclodextrin. Weigh 10mL of Nepeta volatile oil, dissolve it in 200mL of absolute ethanol, add it dropwise to the aqueous solution of β-cyclodextrin, stir at 200r / min for 1h at 70°C, and then take it out. After the solution is cooled to 25°C, put it in a refrigerator at 4°C for 24 hours, vacuum filter it, and dry it in a drying oven at 50°C to constant weight to obtain the product;
[0020] For the volatile oil of Schizonepeta, the whole herb of Schizonepeta was taken, dried in the shade, cut into 0.5 cm sections, extracted by steam distillation for 2 hours, and the volatile oil was collected to obtain the volatile oil of Schizonepeta.
Embodiment 2
[0022] Accurately weigh 80 g of β-cyclodextrin, dissolve in 650 mL of distilled water at 60° C., and stir on a magnetic stirrer to obtain an aqueous solution of β-cyclodextrin. Weigh 10mL of Nepeta volatile oil, dissolve it in 150mL of absolute ethanol, add dropwise to the β-cyclodextrin aqueous solution, stir at 200r / min for 1.5h at 70°C, and then take it out. After the solution is cooled to room temperature, put it in a refrigerator at 4°C for 24 hours, vacuum filter it, and dry it in a drying oven at 50°C to constant weight to obtain the product;
[0023] For the volatile oil of Schizonepeta, the whole herb of Schizonepeta was taken, dried in the shade, cut into 0.3 cm segments, extracted by steam distillation for 2 hours, and the volatile oil was collected to obtain the volatile oil of Schizonepeta.
Embodiment 3
[0025] Accurately weigh 90 g of β-cyclodextrin, dissolve in 600 mL of distilled water at 60° C., and stir on a magnetic stirrer to obtain an aqueous solution of β-cyclodextrin. Weigh 10mL of Nepeta volatile oil, dissolve it in 250mL of absolute ethanol, add it dropwise to the β-cyclodextrin aqueous solution, stir at 200r / min for 1.5h at 60°C, and then take it out. After the solution is cooled to room temperature, put it in a refrigerator at 4°C for 24 hours, vacuum filter it, and dry it in a drying oven at 50°C to constant weight to obtain the product;
[0026] For the volatile oil of Schizonepeta, the whole herb of Schizonepeta was taken, dried in the shade, cut into 0.8 cm sections, extracted by steam distillation for 2 hours, and the volatile oil was collected to obtain the volatile oil of Schizonepeta.
[0027] In order to better verify the practical application effect of the present invention, the following test illustrates the drug effect of the present invention.
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