| abstract |
The invention discloses a microcapsule-embedded chitosan solid fragrance and a preparation method and application thereof. The method comprises the steps of dissolving polylactic acid and essential oil in methylene chloride according to various mass ratios; The polyvinyl alcohol solution is added to obtain the primary emulsion; the polyvinyl alcohol solution and the emulsifier are added to the primary emulsion, washed after emulsification, and finally freeze-dried in a freeze dryer to obtain microcapsules. The microcapsules are then added to the chitosan solution to make them fully mixed, and after freeze-drying, the microcapsules are immersed in the plant essential oil to prepare a solid fragrance. The invention has the following advantages: the preparation method is simple, the chitosan solid fragrance releases the essential oil for a long time; the impact resistance and chemical resistance of the microcapsules are improved through the outer shell layer, and the quality stability and storage stability of the product are ensured. |