JP2001096145A - Method for production of multilayer gel composition - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a method for producing a multilayer gel composition which has sharply separated and clear interfaces and causes no interlaminar separation owing to integration of gel layers one another. SOLUTION: Gel layers are formed by gelling a sol by cooling to form a multilayer structure and obtain a multilayer gel composition. In the composition production, at the time when the surface temperature of one gel layer is lowered from a gelling temperature by 5-15 deg.C, the next sol is added.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a multi-layered gel composition having excellent aesthetics and function, and relates to pharmaceuticals, quasi-drugs,
It is applied to various fields such as food, cosmetics, fragrance and deodorant.

[0002]

2. Description of the Related Art Conventionally, in the field of gels, multilayer gel compositions in which several types of gels are laminated are known.

[0003]

However, no production method has been established for the above-mentioned multilayer gel composition,
The gel that has been charged later is mixed with the gel that has been charged earlier, and the interface is disturbed, and the aesthetic appearance is significantly reduced, or the interlayer adhesion is reduced, causing delamination, and the aesthetic appearance is impaired and a stable function cannot be sufficiently exhibited. Such a problem occurred.

Therefore, in the present invention, the gel between the layers is not mixed and has a cleanly separated interface, and the gel layers are integrally joined to each other so that delamination does not occur. It is an object to provide a method for producing the composition.

[0005]

Generally, when preparing a gel composition, from the viewpoint of productivity, the molten sol is forcibly cooled in a low-temperature atmosphere of about several degrees Celsius, and the time until gelation is reduced. A method of shortening is employed. Therefore, when preparing a multilayer gel composition, the sol charged in the molding container is cooled and gelled, and then a new sol is charged. The present inventor paid attention to the effect of the gel cooling conditions on the structure between the layers of the gel, and as a result of intensive studies, completed the present invention.

That is, the present invention relates to a method for producing a multilayer gel composition by forming a gel layer by cooling a sol to form a gel layer by cooling the sol, wherein the surface temperature of one gel layer is a gel temperature. When the temperature is lowered by 5 to 15 ° C., the next sol is added.

By adopting the above method, it is possible to obtain a multilayer gel composition in which the gels between the respective layers are not mixed and are integrally joined. If the temperature drop of the gel is lower than the gelling temperature by 5 ° C., the surface of the previously filled gel is re-melted by the sol filled later, the gel is mixed, and the interface is disturbed, and the appearance is improved. There is a risk of lowering. Conversely, if the temperature drop of the gel is greater than 15 ° C., the multilayer gel may be delaminated.

Any kind of gelling agent can be used without any particular limitation as long as it gels by cooling the heated sol, and specific examples include gelatin, carrageenan, gellan gum, agar and the like. be able to.

Further, the multilayer structure in the present invention includes:
In addition to vertical multi-layering (multi-layering so that the gel layer interface is parallel to the horizontal plane), it is also possible to fill the sol by tilting the molding container, or to partition the interior of the molding container with a partition plate. It is also possible to make the gel layer interface inclined.

Further, if several kinds of partitioning cylinders having different diameters are used, it is possible to form a laminated structure in which the gel layers are superimposed in a ring shape.

[0011]

EXAMPLES Hereinafter, the present invention will be described in more detail with reference to examples, but the present invention is not limited to these examples.

Example 1 In this example, as shown in Table 1, 70 g of each of two types of sols were prepared using κ-carrageenan as a gelling agent, and the sol was prepared in a cylindrical container having a bottom. By filling, a gel composition having an upper and lower two-layer structure was prepared. Hereinafter, a method for preparing the gel composition will be described.

First, a lower layer sol and an upper layer sol are prepared by a conventional method according to the recipe shown in Table 1, and the liquid temperature is maintained at 53 ° C. Next, the lower layer sol is filled in a molding container,
The mixture was cooled in a refrigerator adjusted to 4 ° C. to form a gel, and when the gel surface temperature dropped to a predetermined temperature, the upper layer sol of a liquid temperature of 53 ° C. was filled. After the upper layer sol completely gelled, it was demolded to obtain a gel composition having a two-layer structure.

The surface temperature of the lower gel was measured by bringing the sensor of a contact thermometer into contact with the gel surface.

Example 2 In this example, as shown in Table 1, agar was used as a gelling agent, a lower sol and an upper sol were prepared by a conventional method, and the liquid temperature was maintained at 39 ° C.

In the subsequent steps, as in Example 1, the lower sol is gelled, and when the gel surface temperature drops to a predetermined temperature, the upper sol is filled with a liquid temperature of 39 ° C., and finally a gel having a two-layer structure is formed. A composition was obtained.

[Evaluation Method of Gel Composition] The obtained gel composition was evaluated for the appearance of the interface between the upper and lower layers and the presence or absence of delamination. In addition, as an evaluation method of delamination,
The gel composition was allowed to stand in a room for about 30 days, and evaluated by whether or not delamination occurred during the weight loss process.

[Evaluation Results] (1) Example 1 Table 2 shows the evaluation results of Example 1. According to the table, when the gelation temperature of the lower gel is 48 ° C., the surface temperature of the lower gel is 4 ° C.
If the upper layer sol is filled at 3 to 33 ° C., that is, 5 to 15 ° C. lower than the gelation temperature, it can be seen that the dissolution of the gels and the delamination at the interface do not occur at the interface. Means that the gel was not mixed to form a two-layer structure.)

The evaluation was also performed for the case where the liquid temperature of the upper layer sol was charged in the range of 53 to 68 ° C. No melting of the gels and no delamination were observed.

(2) Example 2 Table 3 shows the evaluation results of Example 2. In the case of this example, it was confirmed that if the upper layer gel was filled at the time when the temperature dropped from the gelation temperature by 5 to 17 ° C., the gel did not melt into the interface and delamination did not occur.

The evaluation was also carried out for the case where the liquid temperature of the upper layer sol was filled in the range of 39 to 54 ° C., but in any case, when the upper layer sol was filled at the time when the gel temperature dropped from 5 to 17 ° C. No melting of the gels and no delamination were observed.

[0022]

[Table 1]

[Table 2]

[Table 3]

[0023]

As is clear from the above description, according to the present invention, the sol is cooled and gelled to form a gel layer,
In a method for producing a multilayer gel composition by using this as a multilayer structure, the surface temperature of one gel layer is 5 degrees below the gelation temperature.
At the time when the temperature drops by １５15 ° C., by adding the next sol, the gels between the layers do not mix with each other, have a cleanly separated interface, are integrally joined, and do not cause delamination. A multilayer gel-like composition can be obtained.

Claims (1)

[Claims] 1. A method for producing a multi-layered gel composition by forming a gel layer and using it as a multi-layer structure, wherein when the surface temperature of one gel layer falls by 5 to 15 ° C. below the gelation temperature, A method for producing a multilayer gel-like composition, characterized in that the gels between the respective layers are joined together without adding the sol by adding the sol.