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Essence microcapsule and preparation method therefor

A technology of flavor microcapsules and flavors, which is applied in the field of flavors, can solve problems such as low flavor coating rate, inability to increase the utilization rate of flavors, and weak wall material oxidation resistance, so as to improve safety performance, reduce health risks, Good embedding effect

Active Publication Date: 2016-03-23
TANGSHAN NORMAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The existing microcapsule technology is mostly used for medicine, and the wall material of the microcapsule has certain defects, the wall material has weak oxidation resistance, and the coating rate of the essence is low, so the utilization rate of the essence cannot be greatly improved

Method used

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  • Essence microcapsule and preparation method therefor
  • Essence microcapsule and preparation method therefor
  • Essence microcapsule and preparation method therefor

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preparation example Construction

[0029] Next, describe the preparation method of the essence microcapsule according to the second aspect of the present invention, which is used to prepare the essence microcapsule described in the first aspect of the present invention, including the steps: (1) mixing and stirring the capsule core, emulsifier and deionized water evenly The emulsified capsule core is obtained, wherein the material of the capsule core is essence; (2) formaldehyde and melamine are stirred and reacted under heating conditions, then inorganic nanoparticles and polyvinyl alcohol are added, and the stirring is continued to make the polymerization reaction, A prepolymer of the capsule wall is obtained, wherein the capsule wall is a melamine formaldehyde resin filled with inorganic nanoparticles and modified by polyvinyl alcohol; (3) the prepolymer of the capsule wall is added to the emulsified capsule core , adjust the pH value to acidity to react, and then stir, filter, and air dry to complete the prep...

Embodiment 1

[0036] Weigh 3.0883g melamine, 1.8364g formaldehyde aqueous solution (36% by mass), 30ml deionized water, stir for 40min in a constant temperature oil bath at 70°C, and then add 0.0168g nano-TiO 2 Particles (with a particle size of 5 nm to 20 nm), a polyvinyl alcohol (PVA) aqueous solution containing 0.0312 g of PVA, and then continued to stir in a constant temperature oil bath at 70°C for 30 min to obtain an inorganic nanoparticle-filled and polyvinyl alcohol-modified dense Aqueous solution of amine formaldehyde resin prepolymer.

[0037] Weigh 4.7034g of neroli essential oil, 0.0079g of emulsifier SDS, and 30ml of deionized water, and stir vigorously (rotation speed is 1440r / min) for 60min to obtain an emulsified capsule core.

[0038] Add the aqueous solution of the melamine formaldehyde resin prepolymer filled with inorganic nanoparticles and modified by polyvinyl alcohol into the emulsified capsule core, add 3 to 4 drops of n-amyl alcohol to eliminate foam, and then adjus...

Embodiment 2

[0040] Weigh 3.0129g of melamine, 1.8567g of aqueous formaldehyde solution (36% by mass), and 30ml of deionized water, stir for 40min in a constant temperature oil bath at 70°C, and then add 0.0172g of nano-TiO 2Particles (with a particle size of 5nm to 20nm), an aqueous solution of polyvinyl alcohol (PVA) containing 0.0310g PVA, and then continued to stir in a constant temperature oil bath at 70°C for 30min to obtain a dense particle filled with inorganic nanoparticles and modified by polyvinyl alcohol. Aqueous solution of amine formaldehyde resin prepolymer.

[0041] Weigh 4.2 g of sweet-scented osmanthus essential oil, 0.0082 g of emulsifier SDS, and 30 ml of deionized water, and stir vigorously (rotation speed is 1440 r / min) for 60 min to obtain an emulsified capsule core.

[0042] Add the aqueous solution of the melamine formaldehyde resin prepolymer filled with inorganic nanoparticles and modified by polyvinyl alcohol into the emulsified capsule core, add 3 to 4 drops of...

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Abstract

The invention provides an essence microcapsule and a preparation method therefor. The essence microcapsule has a core-shell structure and comprises a capsule core and capsule wall coating the capsule core. The material of the capsule core is essence. The capsule wall is filled with inorganic nanoparticles and is made of melamine-formaldehyde resin modified by polyvinyl alcohol. The essence microcapsule is advantaged by low release rate, good heat resistance, high oxidation resistance, long service life and low toxicity.

Description

technical field [0001] The invention relates to the field of essences, in particular to an essence microcapsule and a preparation method thereof. Background technique [0002] Flavors and fragrances are products closely related to human life and are widely used in various fields. The amount of essence in various products is mostly very low, but it plays a very important role in the quality of the product, and is called the "soul" of flavored products. However, there are many problems in the use of essence. For example, as a volatile product, essence is easily volatilized and wasted in the process of transportation, storage and use, and even deteriorates the product. Microencapsulation technology can solve this problem well. Encapsulation of flavors by microcapsules can effectively reduce the volatilization of flavors during non-use periods and avoid conflicts with other substances in the product. [0003] The existing microcapsule technology is mostly used for medicine, an...

Claims

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Application Information

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IPC IPC(8): C11B9/00B01J13/02
CPCB01J13/02C11B9/00
Inventor 蔡明建褚萌萌
Owner TANGSHAN NORMAL UNIV
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