阅读说明：本技术 一种紫苏精油微囊粉及其制备方法和应用 (Perilla essential oil microcapsule powder and preparation method and application thereof ) 是由 李会珍 张志军 王琴琴 崔丽霞 陈铁 于 2019-08-05 设计创作，主要内容包括：本发明公开了一种紫苏精油微囊粉及其的制备方法和应用,选用低粘度辛烯基琥珀酸淀粉酯作为壁材,其具有包埋率和释放率高等优点,此外低粘度辛烯基琥珀酸淀粉酯本身具有良好的乳化性,且乳化性能强于一般的小分子乳化剂,在制备微囊粉的过程中不需添加新的乳化剂,节约了成本,简化了操作步骤；紫苏精油微囊粉通过气体的扩散均匀有效地作用于果蔬,本发明提供的是一种更为安全、有效的保鲜剂。(The invention discloses perilla essential oil microcapsule powder and a preparation method and application thereof.A low-viscosity octenyl succinic acid starch ester is selected as a wall material, and has the advantages of high embedding rate and release rate, and the like; the perilla essential oil microcapsule powder uniformly and effectively acts on fruits and vegetables through gas diffusion, and the invention provides a safer and more effective preservative.)

1. a preparation method of perilla essential oil microcapsule powder is characterized by comprising the following steps:

s1, mixing the low-viscosity octenyl succinic acid starch ester with deionized water according to the mass ratio of 2-4:10, adding the mixture into a magnetic stirrer for fully stirring, and removing bubbles in vacuum to obtain a solution A for later use;

S2, heating the solution A in water bath at 80 ℃ for 10min, completely gelatinizing, and removing bubbles in vacuum to obtain a solution B for later use;

S3, diluting the perilla essential oil with absolute ethyl alcohol to a concentration of 70-90%;

S4, mixing the solution A and the solution B according to the mass ratio of 2-4:1 to prepare a composite solution, and homogenizing at the rotating speed of 8000-12000rpm for 3-5min to obtain perilla essential oil emulsion;

s5, degassing the perilla essential oil emulsion under vacuum condition for 2-5min for later use;

S6, setting the air inlet temperature of the spray dryer to be 160-180 ℃, the outlet temperature to be 100 ℃ and the feeding flow rate to be 500mL/h, and carrying out spray drying on the perilla essential oil emulsion under the conditions to obtain the perilla essential oil microcapsule powder.

2. A perilla essential oil microcapsule powder, which is prepared by the preparation method of the perilla essential oil microcapsule powder according to claim 1.

3. The use of the perilla essential oil microcapsule powder as claimed in claim 2, wherein the perilla essential oil microcapsule powder comprises: the perilla essential oil microcapsule powder is placed in a fruit and vegetable packaging box and used for keeping fruits and vegetables fresh.

Technical Field

the invention relates to the technical field of food preservatives, in particular to perilla essential oil microcapsule powder and a preparation method and application thereof.

Background

The preservative and fresh-keeping technology occupies an important position in the field of food industry, and chemically synthesized preservatives have potential toxicity and great potential safety hazard, so that the search for a natural low-toxicity preservative becomes a hotspot of research in the field of food industry, and a plurality of plant essential oils in nature have antibacterial effect.

The perilla is rich in essential oil, and the essential oil has wide application in the fields of food, tobacco, pharmacy and the like. The perilla essential oil has the effects of high oxidation resistance, high antibacterial activity, high anti-inflammatory activity, high insecticidal activity, high anticancer activity, high depression resistance and the like, and has high research value, but the perilla essential oil has high volatility, is unstable when being exposed to light and heat, and is easy to oxidize in the air, and the high-concentration plant essential oil is directly applied to agricultural products to easily cause cell damage, so the application of the perilla essential oil is limited to a certain extent.

Therefore, the development of perilla essential oil microcapsule powder and a preparation method thereof is urgently needed.

Disclosure of Invention

The invention aims to solve the defects in the prior art, and provides the perilla essential oil microcapsule powder and the preparation method and application thereof, which can be used for quickly preparing the perilla essential oil microcapsule powder and provide theoretical basis and technical reference for improving the stability of perilla essential oil and in the field of food preservation and preservation.

In order to achieve the purpose, the invention is implemented according to the following technical scheme:

a preparation method of perilla essential oil microcapsule powder comprises the following steps:

S1, mixing the low-viscosity octenyl succinic acid starch ester with deionized water according to the mass ratio of 2-4:10, adding the mixture into a magnetic stirrer for fully stirring, and removing bubbles in vacuum to obtain a solution A for later use;

S2, heating the solution A in water bath at 80 ℃ for 10min, completely gelatinizing, and removing bubbles in vacuum to obtain a solution B for later use;

S3, diluting the perilla essential oil with absolute ethyl alcohol to a concentration of 70-90%;

s4, mixing the solution A and the solution B according to the mass ratio of 2-4:1 to prepare a composite solution, and homogenizing at the rotating speed of 8000-12000rpm for 3-5min to obtain perilla essential oil emulsion;

S5, degassing the perilla essential oil emulsion under vacuum condition for 2-5min for later use;

S6, setting the air inlet temperature of the spray dryer to be 160-180 ℃, the outlet temperature to be 100 ℃ and the feeding flow rate to be 500mL/h, and carrying out spray drying on the perilla essential oil emulsion under the conditions to obtain the perilla essential oil microcapsule powder.

The perilla essential oil microcapsule powder is prepared by the method.

in addition, the invention also provides application of the perilla essential oil microcapsule powder, and the perilla essential oil microcapsule powder is placed in a fruit and vegetable packaging box for keeping fruits and vegetables fresh.

Compared with the prior art, the method is more suitable for the industrial preparation of the perilla essential oil microcapsule powder, the method selects the low-viscosity octenyl succinic acid starch ester as the wall material, has the advantages of high embedding rate and release rate and the like, in addition, the low-viscosity octenyl succinic acid starch ester has good emulsibility and stronger emulsibility than a common small-molecule emulsifier, and a new emulsifier is not required to be added in the process of preparing the microcapsule powder, so that the cost is saved, and the operation steps are simplified. The perilla essential oil microcapsule powder uniformly and effectively acts on fruits and vegetables through gas diffusion, and the invention provides a safer and more effective preservative.

Drawings

fig. 1 is a scanning electron microscope image of perilla essential oil microcapsule powder of example 1 of the present invention.

Fig. 2 is an infrared spectrum of perilla essential oil microcapsule powder of example 1 of the present invention: a is perilla essential oil microcapsule powder; b is perilla essential oil; c is a low viscosity octenyl succinic starch ester.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail with reference to the following embodiments. The specific embodiments described herein are merely illustrative of the invention and do not limit the invention.