JP2666233B2 - Sponge-shaped konjac compact - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention has an antibacterial and antifungal effect.
And a sponge-like konjac molded product which does not cause discoloration due to iron .

[0002]

BACKGROUND ART sponge konjac are the konjac fine powder was thinly sliced konjac tubers dry milled to a fine powder by adding water or warm water to a paste, to which konjac for coagulant (calcium hydroxide, carbonate Soda, etc.) and coagulated by heating or coagulation at room temperature to form konjac, then temporarily frozen to separate water and konjac components, and then thawed.
The spongy konjac obtained in this way has a softer touch than polyurethane, synthetic rubber, and sashimi, and has been used as a cleaning tool without damaging the skin.

[0003]

[SUMMARY OF THE INVENTION However, the above sponge-like konjac is often stored while water after use, or occurs fungi on its surface over time, or water containing There was a problem that the bacterium rots and gives off a bad smell or discoloration . The sponge-like konjac in such a state is extremely difficult to use because it has a significantly deteriorated usability, and its improvement has been desired in advance.

The present invention has been made in view of such circumstances, and it is difficult to attract bacteria in the air and water.
Moreover, the present invention aims to provide an antibacterial and antifungal sponge-like konjac molded article which has an action of suppressing the growth of various germs and can always be used cleanly.

[0005]

To achieve the above object, according to the Invention The sponge-like konjac molded product of the present invention, freeze <br/> Yaku to do this, thawed, dried or dehydrated spongy comprising the konjac, characterized in by comprising an aqueous solution prepared by dissolving the 0.1 to 1.0 wt% sodium dehydroacetate 0.05 wt% of oxalic acid impregnated 10-30 wt% is there.

The spongy konjac molded article of the present invention can be obtained, for example, as follows. That is, the fine powder konjac potato, in addition water and a coagulant such as calcium hydroxide to make a paste kneaded product, shaping the paste-like kneaded material into a predetermined shape. Then, once frozen molded product obtained, thawed back to room temperature again, after the sponge-like konjac dried or dehydrated, by impregnating a solution prepared by dissolving a dehydroepiandrosterone sodium acetate and oxalic acid, The spongy konjac molded article of the present invention can be obtained.

[0007] Then, as described above, the spongy konjac
De When is the impregnation hydro sodium acetate and aqueous and was mixed and dissolved oxalic acid, previously to prepare an aqueous solution prepared by dissolving a dehydroepiandrosterone sodium acetate and oxalic acid, and immersing the sponge-like konjac in this aqueous solution, also A method of impregnating the sponge-like konjac with the aqueous solution by applying or spraying the above-mentioned aqueous solution on the sponge-like konjac can be adopted. In this case, the concentration of sodium dehydroacetate in the aqueous solution is 0.05 to 0.5% by weight.
And That is, if the concentration of sodium dehydroacetate exceeds 0.5% by weight, safety problems such as strong irritation of the skin may occur. This is because the fungicidal effect is reduced and the object of the present invention cannot be achieved. The concentration of the shea oxalic acid is 0.1 to 1.0 wt%. That is, if the concentration of oxalic acid exceeds 1.0% by weight, there is a possibility that a problem of safety such as a strong acid odor and strong irritation of the skin may occur, and conversely, this may be less than 0.1% by weight. In this case, the synergistic effect of using oxalic acid in combination with sodium dehydroacetate cannot be obtained. Further, the mixing ratio between sodium dehydroacetate and oxalic acid is such that oxalic acid is used in excess in molar concentration with respect to sodium dehydroacetate. That is, if the mixing ratio is other than this ratio, a sufficient synergistic effect of the antibacterial and antifungal effects cannot be obtained.

The amount of the aqueous solution impregnated in the sponge-like konjac is in the range of 10 to 30% by weight based on the weight of the dried or dehydrated sponge-like konjac. That is, if the content is less than 10% by weight, not only the sufficient antibacterial and antifungal effects cannot be obtained and the object of the present invention is not achieved, but also the feeling when using the sponge-like konjac molded article as a cleaning tool becomes hard and the skin becomes hard. This is because the resistance with respect to the pressure increases. On the other hand, the impregnation amount is 30
Even exceed wt%, the antimicrobial commensurate with increase, can not be <br/> expected antifungal effect, may also occur further problems such as contaminating the surroundings falls the aqueous solution dripping during handling Therefore, it is within the above range.

[0009] Incidentally, in manufacturing the sponge konjac molding of the present invention as described above, other additives, modifiers, or no problem even with the addition of reinforcing materials such as fibers appropriately.

[0010]

EXAMPLES Hereinafter, the present invention will be described in detail with reference to Examples. Prior to this, a method for testing molds and bacteria and an evaluation of the degree of coloration of products will be described.

[0011] The mold test was conducted according to JIS Z 2911.
Aspergillus niger (ATCC 6275), penicilli
Umcitorinum (ATCC9849), Rhizopus nigri
Kans (SN32), Cladosporium Herbalm
(IAMF517), ketomium globosum (ATCC)
6205) and MIL STD810
C-specified Aspergillus niger (ATCC9642),
Aspergillus flavus (ATCC9643), Aspe
Lugils Vesicolor (ATCC 11730), Penicilli
Fuumunikurosumu (ATCC11797), ketomiu
Using five strains of muglobosum (ATCC6205)
To use. Bacterial tests include Staphylococcus aureus, greenpus
Four strains are used: fungi, E. coli and Bacillus subtilis.

(A) Mold test by agar plate culture method According to the paint test according to JIS Z 2911, the above 5
Each mold strain is used. First, a potato dextrose agar medium is aseptically dispensed into a 9 cm diameter petri dish and solidified. Then, a spongy konjac molded product (sample) of each embodiment described later is placed in the center of the Petri dish, and a mixed spore suspension of five molds is uniformly sprayed on the medium surface and the sample surface. After that, cover the Petri dish. The petri dishes are cultured at a relative humidity of 95% and a temperature of 28 ± 2 ° C. for 7 to 10 days.

(B) Bacterial test by agar plate culture method The above four kinds of bacterial strains were heat-sterilized beforehand, respectively.
A normal agar medium cooled to an appropriate temperature is inoculated and mixed well. Next, this is dispensed into a petri dish having a diameter of 9 cm and solidified, and then a sponge-like konjac molded product (sample) of each embodiment described later is placed at the center thereof and a lid is placed thereon.
The culture is performed by keeping the Petri dish at a temperature of 30 ± 1 ° C. for 3 to 5 days.

Evaluations of the above tests (a) and (b) ○: remarkable growth inhibition band △: slight growth inhibition band ×: no growth inhibition band

(C) Evaluation of the degree of coloring The degree of discoloration on the surface of the spongy konjac molded product is visually evaluated. : Colorless △: slightly tan ×: tan

The cut Example 1-3 konjac tubers, make Arakona dried until its water content is about 15%, the konjac raw material Flour further pulverized this, 30 in weight ratio 60 times water was added and kneaded to obtain a konjac paste. To this paste konjac, add calcium hydroxide as a coagulant,
The molded product was placed in a mold, heated in hot water, pulled up from the hot water and cut into a plate. The plate-like konjac thus obtained was once frozen, the water in the konjac was separated from the konjac components, then returned to room temperature again, thawed and dried to form a sponge-like konjac. The sponge-like konjac was prepared at a predetermined concentration as shown in Table 1 below .
Was immersed in an aqueous solution prepared by dissolving a combination of a dehydroepiandrosterone sodium acetate and oxalic acid was prepared sponge-like konjac molded body by a predetermined amount impregnated with the aqueous solution. Table 1 shows the results of the above-described mold test, bacterial test and evaluation of the degree of coloration of the sponge-like konjac molded product.

Comparative Examples 1 to 6 A sponge-like konjac molded product was produced in the same manner as in the above example except that sodium dehydroacetate and oxalic acid were used at concentrations outside the concentration range used in the present invention. , Bacterial tests and evaluation of the degree of coloration were carried out. Table 1 shows the results.

[0018]

[Table 1]

As shown in Table 1, the sponge-like konjac molded products of Examples 1 to 3 exhibited a fungicidal effect against any of the molds specified in JIS and MIL in the mold test (a) according to JISZ 2911. did. Also, in the bacterial test (b), the antibacterial effect was exhibited particularly against Staphylococcus aureus and Bacillus subtilis . Further, as seen from the evaluation of the degree of coloration (c), sponge-like konjac molded body obtained in Examples 1 to 3, also observed discoloration by iron contained in the water used in konjac potatoes or manufacturing process of the starting material It was not possible.

[0020]

As described above, the sponge-like konjac molded article of the present invention has excellent resistance to fungi and bacteria, so that even if it is left in a water-containing state, the surface of the konjac molded article has a mold. No water is generated or the contained water is spoiled by bacteria to give off a bad smell, so that it can be always used in a sanitary condition. In addition, the spongy konjac composition of the present invention
The shape is made from raw konjac potatoes and water used in the manufacturing process.
It does not cause discoloration due to the iron content,
When used as a cleaning device or the like, without giving a strong irritation to the skin, but extremely high practical commercial value that can be used in gentle feel to the skin.

Claims (1)

(57) [Claims] 1. Sponge-like konjac obtained by freezing, thawing, drying or dehydrating konjac, 0.05-0.5% by weight of sodium dehydroacetate and 0.1-1.0% by weight of oxalic acid
A sponge-like konjac molded product characterized by being impregnated with an aqueous solution obtained by mixing and dissolving an amount of 10% to 30% by weight.