阅读说明：本技术 一种茉莉缓释香精及其制备方法 (Jasmine slow-release essence and preparation method thereof ) 是由 肖作兵 侯文菁 蔡炳彪 张建荣 寇兴然 牛云蔚 康彦翔 于 2020-06-15 设计创作，主要内容包括：本发明公开了一种茉莉缓释香精及其制备方法。所述茉莉缓释香精为片状,该片状结构的壁材为γ-环糊精,芯材为茉莉香精。制备方法为：将γ-环糊精溶解于去离子水中,搅拌直至γ-环糊精全部溶解,形成水相；将茉莉香精溶解于乳化剂中,搅拌形成油相；向水相中加入油相,持续搅拌,使油相与水相充分混合,形成均一稳定的乳液,即茉莉缓释香精。采用本发明的方法所得到的茉莉缓释香精粒径分布均匀,其步骤简单可行,缓释效果良好。(The invention discloses a jasmine slow-release essence and a preparation method thereof. The jasmine slow-release essence is in a sheet shape, the wall material of the sheet structure is gamma-cyclodextrin, and the core material is jasmine essence. The preparation method comprises the following steps: dissolving gamma-cyclodextrin in deionized water, and stirring until the gamma-cyclodextrin is completely dissolved to form a water phase; dissolving jasmine essence in an emulsifier, and stirring to form an oil phase; adding the oil phase into the water phase, and continuously stirring to fully mix the oil phase and the water phase to form uniform and stable emulsion, namely the jasmine slow-release essence. The jasmine slow-release essence obtained by the method has uniform particle size distribution, simple and feasible steps and good slow-release effect.)

1. The jasmine slow-release essence is characterized by being flaky, the wall material of the flaky structure is gamma-cyclodextrin, and the core material is the jasmine essence.

2. The jasmine slow-release essence according to claim 1, wherein the raw materials of the jasmine slow-release essence comprise the following components in percentage by mass:

3. the slow-release jasmine essence of claim 2, wherein the emulsifier is Tween 20, a non-ionic surfactant.

4. The preparation method of the jasmine slow-release essence disclosed by any one of claims 1 to 3, which is characterized by comprising the following steps of:

step 1): dissolving gamma-cyclodextrin in deionized water, and stirring until the gamma-cyclodextrin is completely dissolved to form a water phase;

step 2): dissolving jasmine essence in an emulsifier, and stirring to form an oil phase;

step 3): adding the oil phase obtained in the step 2) into the water phase obtained in the step 1), and continuously stirring to fully mix the oil phase and the water phase to form uniform and stable emulsion, namely the jasmine slow-release essence.

5. The preparation method of the slow-release jasmine essence according to claim 4, wherein the stirring speed in the steps 1) and 2) is 500 r/min; the stirring speed in the step 3) is 300 r/min.

Technical Field

The invention belongs to the field of chemical industry, relates to a preparation method of a slow-release jasmine essence, and particularly relates to a preparation method of a slow-release jasmine essence taking gamma-cyclodextrin as a wall material and jasmine essence as a core material.

Background

The cyclodextrin molecules are slightly conical circular rings, have special structures with hydrophilic outer edges and hydrophobic inner cavities, so that the cyclodextrin molecules can embed a wide range of guest molecules, such as drugs, essential oil, antioxidants and even inert gases, and form host-guest inclusion compounds through hydrophobic interaction force, van der waals force, hydrogen bonds and the like. The jasmine essence has pleasant fragrance, can effectively cover peculiar smell, and has wide application in the aspects of food, medicine, cosmetics and the like. In view of the advantages of cyclodextrin, the essence can be embedded by cyclodextrin, so that the solubility of the essence can be effectively improved, the volatile components of the essence can be protected, the release can be controlled, and the utilization rate can be improved.

Among them, most studied cyclodextrins are α -cyclodextrin, β -cyclodextrin, and γ -cyclodextrin containing 6, 7, and 8 glucose unit molecules, respectively. The alpha-cyclodextrin has a small cavity, and macromolecular guest cannot enter the cavity, so that only small guest molecules can be embedded, and the application range is small. The currently most widely used beta-cyclodextrin has its inherent low water solubility which limits its range of application. The gamma-cyclodextrin used in the invention has the characteristics of large cavity, good water solubility and high loading rate, and can form a stable inclusion compound with macromolecular aromatic compounds in essence.

Disclosure of Invention

The technical problem to be solved by the invention is as follows: the problem that macromolecular aromatic compounds in the essence cannot be embedded; secondly, the problem of low loading rate of the cyclodextrin embedded essence is solved.

In order to solve the technical problem, the invention provides a jasmine slow-release essence which is characterized by being flaky, wherein the wall material of the flaky structure is gamma-cyclodextrin, and the core material is the jasmine essence.

Preferably, the raw materials of the jasmine slow-release essence comprise the following components in percentage by mass:

more preferably, the emulsifier is a nonionic surfactant tween 20.

The invention also provides a preparation method of the jasmine slow-release essence, which is characterized by comprising the following steps of:

step 1): dissolving gamma-cyclodextrin in deionized water, and stirring until the gamma-cyclodextrin is completely dissolved to form a water phase;

step 2): dissolving jasmine essence in an emulsifier, and stirring to form an oil phase;

step 3): adding the oil phase obtained in the step 2) into the water phase obtained in the step 1), and continuously stirring to fully mix the oil phase and the water phase to form uniform and stable emulsion, namely the jasmine slow-release essence.

Preferably, the stirring speed in the step 1) and the step 2) is 500 r/min; the stirring speed in the step 3) is 300 r/min.

The jasmine slow-release essence obtained by the method has uniform particle size distribution, simple and feasible steps and good slow-release effect. Tested by a dynamic laser light scattering instrument.

Drawings

FIG. 1 is a scanning electron microscope image of the jasmine slow-release essence prepared in example 1;

fig. 2 shows the particle size of the jasmine slow-release essence prepared in example 1 measured by a dynamic laser light scattering instrument.

Detailed Description

In order to make the invention more comprehensible, preferred embodiments are described in detail below with reference to the accompanying drawings.