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CN-122004252-A - Efficient malachite anophelifuge green essential oil and preparation method thereof

CN122004252ACN 122004252 ACN122004252 ACN 122004252ACN-122004252-A

Abstract

The invention relates to the technical field of mosquito-repellent essential oil, in particular to efficient malachite green essential oil, which comprises the following raw materials of malachite essential oil, auxiliary plant essential oil, green nonionic surfactant, food-grade ethanol and deionized water, wherein the auxiliary plant essential oil is at least one of lemon grass essential oil, peppermint essential oil, lavender essential oil, citronella essential oil, chamomile essential oil, rosemary essential oil and eucalyptus essential oil, and the green nonionic surfactant is at least one of tween 80, polyglycerol fatty acid ester, cocoyl glucoside and polyglycerol-3 laurate. According to the invention, the essential oil of the malachite is taken as a core, the unique mosquito repellent activity of the essential oil provides a core support for the efficient mosquito repellent performance of the product, and compared with the existing product taking single component or non-malachite as a core, the essential oil of the malachite greatly improves the mosquito repellent efficiency, and ensures the core function advantage of the product from the source.

Inventors

  • A Lamu
  • LI ZHAOQING

Assignees

  • 西藏自治区高原生物研究所

Dates

Publication Date
20260512
Application Date
20260203

Claims (10)

  1. 1. The mosquito-repellent green essential oil is characterized by comprising raw materials of malachite green essential oil, auxiliary plant essential oil, green nonionic surfactant, food-grade ethanol and deionized water, wherein the auxiliary plant essential oil is at least one of lemon grass essential oil, peppermint essential oil, lavender essential oil, citronella essential oil, chamomile essential oil, rosemary essential oil and eucalyptus essential oil, and the green nonionic surfactant is at least one of tween 80, polyglycerol fatty acid ester, cocoyl glucoside and polyglycerol-3 laurate.
  2. 2. The mosquito-repellent green essential oil according to claim 1, wherein the mass percentage range of the raw materials is 10 to 30 parts of malachite essence, 2 to 14 parts of auxiliary plant essence, 2 to 7 parts of green nonionic surfactant, 42 to 68 parts of food-grade ethanol and 9 to 31 parts of deionized water.
  3. 3. The mosquito-repellent green essential oil according to claim 1 or 2, wherein the raw materials further comprise a natural antioxidant, wherein the natural antioxidant is at least one selected from vitamin E and vitamin C, and the weight percentage of the natural antioxidant is 1 part.
  4. 4. A mosquito repellent green essential oil according to any one of claims 1 to 3, wherein the raw material further comprises menthol, in a mass percentage of 1 part.
  5. 5. A method for preparing the mosquito repellent green essential oil according to any one of claims 1 to 4, comprising the steps of: (1) Extracting herba Saussureae Involueratae essential oil, namely selecting fresh herba Saussureae Involueratae whole plant, removing rotten part, cleaning, air drying, pulverizing, adding food-grade ethanol, ultrasonic extracting, standing, filtering, distilling the filtrate under reduced pressure to recover ethanol to obtain crude essential oil, and purifying the crude essential oil by silica gel column chromatography to obtain herba Saussureae Involueratae essential oil; (2) Mixing the compound essential oil, namely adding the malachite essential oil and the auxiliary plant essential oil into a reaction kettle according to the proportion, and stirring and mixing to obtain mixed essential oil; (3) Adding a green nonionic surfactant into the mixed essential oil, stirring, dropwise adding a mixed solution of food-grade ethanol and deionized water, heating, preserving heat and stirring to obtain a uniform essential oil system; (4) And (3) post-treatment, namely filtering the essential oil system, sealing and standing in a dark place to obtain the mosquito-repellent green essential oil.
  6. 6. The preparation method according to claim 5, wherein in the step (1), the crushed malachite green has a particle size of 40 to 60 meshes, the food-grade ethanol is added in an amount 5 times the mass of malachite green, the ultrasonic extraction temperature is 35 ℃, the ultrasonic power is 150 to 180W, the extraction time is 30 to 45 minutes, and the eluent of silica gel column chromatography is petroleum ether-ethanol mixed solution.
  7. 7. The method according to claim 5 or 6, wherein in the step (2), the stirring temperature is 22 to 30 ℃, the stirring speed is 250 to 400 rpm, the stirring time is 15 to 25 minutes, and the ultrasonic-assisted dispersion can be performed during the stirring.
  8. 8. The process according to any one of claims 5 to 7, wherein in the step (3), the stirring time after adding the green nonionic surfactant is 20 to 30 minutes, and the temperature is raised to 30 to 40 ℃ after the completion of the dropwise addition of the mixture of ethanol and deionized water, and the stirring time is 30 to 50 minutes.
  9. 9. The method according to any one of claims 5 to 8, wherein in the step (4), the fine filtration is performed, the filtration membrane is made of polyvinylidene fluoride, the standing temperature is 20 to 25 ℃, and the standing time is 12 to 36 hours.
  10. 10. The method according to any one of claims 5 to 9, wherein the step (4) further comprises a step of ultraviolet sterilization after filtration, and the step (1) comprises a step of purifying the food grade ethanol by 75% or 95%.

Description

Efficient malachite anophelifuge green essential oil and preparation method thereof Technical Field The invention relates to the technical field of mosquito-repellent essential oil, in particular to efficient malachite green essential oil and a preparation method thereof. Background Along with the promotion of people's health environmental protection consciousness, green mosquito repellent product becomes market mainstream gradually, and plant essential oil formula mosquito repellent product is favored because of natural mild characteristic. However, the existing mosquito-repellent essential oil technology still has a plurality of problems to be solved. In addition, the product adopts a simple compound formula to mix a plurality of essential oils, but an effective synergistic system is not formed, and even part of the components have antagonistic effect, thus not only affecting the mosquito repelling efficiency, but also possibly causing pungent smell and poor user experience. In terms of stability, the existing essential oil products generally have the problems of easy layering, precipitation and oxidative deterioration, and have shorter shelf life under normal temperature, so that the storage and use of the products are limited. In addition, the auxiliary agent is selected, and a plurality of products adopt traditional non-green auxiliary agents, so that the dispersibility can be improved to a certain extent, but the risk of skin irritation exists, and the safety and environmental protection development trend is not met. The preparation technology level is that the traditional extraction method has low extraction rate and purity, active ingredients are easy to lose, the compounding process lacks accurate parameter control, the ingredient fusion degree is insufficient, the post-treatment technology is simplified, and the purity and stability of the product are difficult to ensure. In addition, the suitability of the existing product is limited, the broad-spectrum repellent capability is weak, the existing product can only aim at single mosquito and cannot cope with various pests such as mites and bed bugs, the safety is insufficient, the existing product cannot meet the use requirements of special people such as infants, sensitive muscles and the like, meanwhile, the existing product is less in special adaptation products aiming at different scenes such as household, outdoor, camping and the like, and the existing product is difficult to fully cover the diversified use requirements. The technical defects cause that the existing mosquito-repellent essential oil products are difficult to realize high-efficiency, long-acting, safe and stable unification on the comprehensive performance, and restrict the development and application of the green mosquito-repellent essential oil technology. Disclosure of Invention The invention aims at providing an efficient malachite mosquito-repellent green essential oil and a preparation method thereof. The invention further aims to provide mosquito-repellent green essential oil which comprises raw materials of malachite essence, auxiliary plant essential oil, green nonionic surfactant, food-grade ethanol and deionized water, wherein the auxiliary plant essential oil is at least one of lemon grass essential oil, peppermint essential oil, lavender essential oil, citronella essential oil, chamomile essential oil, rosemary essential oil and eucalyptus essential oil, and the green nonionic surfactant is at least one of tween 80, polyglycerol fatty acid ester, cocoyl glucoside and polyglycerol-3 laurate. Preferably, the mass percentage range of each raw material is 10 to 30 parts of malachite essence, 2 to 14 parts of auxiliary plant essence, 2 to 7 parts of green nonionic surfactant, 42 to 68 parts of food grade ethanol and 9 to 31 parts of deionized water. Preferably, the raw materials further comprise natural antioxidants, wherein the natural antioxidants are at least one selected from vitamin E and vitamin C, and the weight percentage of the natural antioxidants is 1 part. Preferably, the raw materials also comprise menthol, and the mass percentage of the menthol is 1 part. The preparation method of the mosquito-repellent green essential oil comprises the following steps: (1) Extracting herba Saussureae Involueratae essential oil, namely selecting fresh herba Saussureae Involueratae whole plant, removing rotten part, cleaning, air drying, pulverizing, adding food-grade ethanol, ultrasonic extracting, standing, filtering, distilling the filtrate under reduced pressure to recover ethanol to obtain crude essential oil, and purifying the crude essential oil by silica gel column chromatography to obtain herba Saussureae Involueratae essential oil; (2) Mixing the compound essential oil, namely adding the malachite essential oil and the auxiliary plant essential oil into a reaction kettle according to the proportion, and stirring and mixing to obtain mixed essential oil; (3) Adding a