JPS6045846B2 - L-ascorbic acid preparation and its manufacturing method - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to stable L-ascorbic acid formulations and methods for their production.

More specifically, 1 part by weight of L-ascorbic acid or its salt, 1 part by weight of an oil or fat with a melting point of 50 to 80°C, and 1 part of glycerin monoacetomonofatty acid ester, glycerin monoacetodifatty acid ester, or glycerinacetomonofatty acid ester.
A stable L-ascorbic acid preparation containing 0.5 to 10 parts of a coating agent consisting of a species or two or more species, and L-ascorbic acid or its salts are mixed with oil and fat with a melting point of 50 to 80°C and glycerol monoacetomonofatty acid. The present invention relates to a method for producing an L-ascorbic acid preparation, which is characterized in that it is mixed into a melt of one or more of ester, glycerin monoacetodifatty acid ester, and glycerinacetomonofatty acid ester and coated and powdered. . L-ascorbic acid and its salts are nutritionally essential.
Deficiency of this can cause anemia in humans, and gums,
Bleeding occurs from the skin and mucous membranes, causing what is called scurvy.

The importance of L-ascorbic acid is not only nutritional.
In the food industry, it is also important as an organic acid, serving as an acidulant and as an oxidizing agent for modifying wheat flour, the raw material for baked goods.

The disadvantage of L-ascorbic acid and its salts, which are useful nutritionally and in food processing, is that they are highly susceptible to oxidation.

If the temperature of the aqueous solution is high or alkaline, it will be oxidized and decomposed by oxygen in the air, and its function will disappear. Further, when various minerals coexist, decomposition is particularly remarkable.

This is fatal when mixed with powdered foods, added to compound feed for livestock and fish, and
- It is easy to imagine that in products to which ascorbic acids have been added, L-ascorbic acid is easily decomposed during distribution and storage, and there are cases where the original effects cannot be expected.

Recently, potassium bromate (hereinafter referred to as promate), which is widely used as a flour dough improving agent, has been becoming less popular, and ascorbic acid has been attracting attention as an alternative improving agent. The bread-making function of promate is that it is extremely effective in promoting -S-S- bonds through oxidation, and in forming and strengthening the three-dimensional structure associated with this, but its greatest feature is that the reaction rate is slow. However, the effect mainly appears after molding. On the other hand, since the reaction rate of L-ascorbic acid is significantly faster than that of promate, the effect appears quickly, and as a result, when molded, the dough becomes tight and easy to break, resulting in insufficient volume of the product. However, it has the disadvantage of causing a rough texture and poor texture.

In order to prevent such adverse effects, it is possible to delay the onset of the effect in the bread making process by combining cysteine or coating the surface of ascorbic acid with oil or fat having a certain melting point or higher, or to prevent the effects from occurring in the bread-making process. The measures are taken to cease contact with the public.

JP-A-50-94154 and JP-A-54-5274
No. 1 describes a method of coating with hardened animal and vegetable oils and fats, JP-A No. 5
No. 3-11278m describes a method of coating by mixing hydrogenated oil and lecithin or a melt of hydrogenated oil, lecithin, and glycerin fatty acid ester, JP-A-54-10996? provides a method of coating with hydrogenated oil and sucrose fatty acid ester. However, when coating with hardened oils and fats of animal or vegetable origin, the coating is extremely brittle and easily cracks due to impact, and the coagulation rate during coating formation is too fast, resulting in incomplete coating of L-ascorbic acid.

Furthermore, coatings using a combination of hydrogenated oil and fat and lecithin tend to discolor during long-term storage due to the lecithin content, and improvements in this problem are desired for food applications. Furthermore, when coating with hydrogenated oil and fat and sucrose fatty acid ester, the coating is too strong and has the disadvantage that elution of ascorbic acid is insufficient during actual use.

The present inventors completed the present invention as a result of intensive research to eliminate the above-mentioned drawbacks. That is, the present invention relates to a stable L-ascorbic acid preparation and a method for producing the same. More details: L-ascorbic acid or its salts 1
parts by weight, and 0.5 to 100 parts by weight of a coating agent consisting of fats and oils with a melting point of 50 to 80°C and one or more of glycerin monoacetomonofatty acid esters, glycerin monoacetodifatty acid esters, and glycerin diacetomonofatty acid esters. A stable L-ascorbic acid formulation containing L-
Coating powder is obtained by mixing ascorbic acid or its salts into a melt of one or more of oils and fats with a melting point of 50 to 80°C and one or more of glycerin monoacetomonofatty acid ester, glycerin monoacetodifatty acid ester, and glycerin diacetomonofatty acid ester. The present invention relates to a method for producing an L-ascorbic acid preparation, which is characterized by the following. The salts of L-ascorbic acid in the present invention include, for example, calcium salts and sodium salts of L-ascorbic acid.

In the present invention, oils and fats with a melting point of 50 to 80°C include hydrogenated beef tallow, hydrogenated lard, hydrogenated fish oil, hydrogenated whale oil, hydrogenated chicken oil, hydrogenated palm oil, hydrogenated rapeseed oil, hydrogenated soybean oil, hydrogenated coconut oil, hydrogenated castor oil, etc. These can be used alone or in combination of two or more.

Moreover, a part of these fats and oils can also be replaced with glycerin saturated fatty acid diester. Glycerin monoacetomonofatty acid ester, glycerin monoacetodifatty acid ester, and glycerin diacetomonofatty acid ester in the present invention are so-called acetylated glycerides, and glycerin fatty acid monoester or glycerin fatty acid diester and acetic acid are reacted, or oil and fat are reacted with triacetin. It is obtained by transesterifying the

The fatty acid of the acetylated glyceride used in the present invention may be either saturated or unsaturated and has 8 to 22 carbon atoms.

Depending on the number of carbon atoms in the fatty acid, whether it is saturated or unsaturated, and the acetylation rate, it can take on a liquid, paste or solid form, but in order to obtain a coating that meets the objectives of the present invention, acetylated glycerides in a paste or solid form are required. preferable. Glycerin monoaceto monofatty acid ester, glycerin monoacetodifatty acid ester, and glycerin diacetomonofatty acid ester can be used alone or in combination of two or more. The amount of glycerin monoacetomonofatty acid ester, glycerin monoacetodifatty acid ester, and glycerin diacetomonofatty acid ester in the coating material of the present invention is 0.1 per part by weight of oil or fat.
~5 parts by weight is preferable. The coating agent of the present invention is used in an amount of 0.5 to 100 parts by weight per 1 part by weight of L-ascorbic acid or its salt.

The mixture obtained by adding L-ascorbic acid or its salts to the coating melt of the present invention has a good dispersion state and good dispersion stability.

As a means for pulverizing this mixture, for example, by spraying it into a room adjusted to 35° C. or lower using a rotating disc type sprayer, a powdery product with a particle size of 50 to 300 μm is obtained.

The means for pulverization is not limited to the above-mentioned method, but can be pulverized by any appropriate method. If the amount of coating agent is 0.5 parts by weight or less based on L-ascorbic acid or its salts, the viscosity of the suspension obtained by dispersing L-ascorbic acid or its salts in the coating material melt will be very high. This makes spraying, atomization, and granulation difficult, making it impossible to obtain the desired coated particles.

Moreover, if the amount of coating agent exceeds 10 parts, the effect of increasing the amount of coating agent will not be recognized in terms of storage stability, and the cost per unit of L-ascorbic acid will increase, which is not preferable.

Since the stability of L-ascorbic acid or its salts is significantly improved by the coating method of the present invention, it is preferable for food processing fields such as bread making, and the present invention is also suitable for fields such as powdered mineral mixtures and feeds. The utility value of the product is great.

The present invention will be explained below using Examples and Comparative Examples, but the present invention is not limited to these Examples.

Note that unless otherwise specified, parts refer to parts by weight.

Example 1 A coating material consisting of 25 parts of hardened beef tallow (melting point 60°C) and 5 parts of glycerin monoacetate and monohardened beef tallow fatty acid ester was melted and kept at a temperature of 70 to 80'C, in which L of 75μ or less was melted.
- 25 parts of ascorbic acid was added, and while stirring and mixing uniformly, the mixture was sprayed into a room at 35° C. or lower using a rotating disk sprayer to obtain 97 parts of coated particles of 80 to 200 μm.

Example 2 A coating material consisting of 5 parts of hydrogenated palm oil (melting point 58°C) and 9 parts of glycerin diacetomonostearate was melted, and L of 75μ or less was melted in the temperature maintained at 65-75°C.
- Calcium ascorbate 2 was added and sprayed into a room at 30 DEG C. or below using a nozzle type sprayer while stirring and mixing uniformly to obtain 96 parts of coated particles of 60 to 300 microns.

Example 3 A coating material consisting of hydrogenated soybean oil (melting point 6CfC) 6CB1 glycerin monoacetodisoybean oil fatty acid ester w part was melted and kept at a temperature of 80 to 90°C, and L- of 50μ or less was melted.
Sodium ascorbate (9) parts was added, and 96 parts of coated particles of 50 to 200 μm were obtained in the same manner as in Example 1 while stirring and mixing uniformly.

Example 4 A coating material consisting of 9 parts of cured rapeseed fat (melting point 63°C) and 9 parts of glycerin monoacetomonostearate was melted and kept at a temperature of 75 to 85°C. Add ascorbic acid 4, and add coated particles 9 of 60 to 200μ in the same manner as in Example 2 while stirring and mixing uniformly.
Got 5 copies.

Example 5 A coating material consisting of hydrogenated chicken fat (melting point 60°C), hydrogenated soybean oil (melting point 69 chicken C) 3(2), glycerin diacetate monohardened coconut oil fatty acid ester 2 was melted, and the temperature was 80-9.
Calcium L-ascorbate having a size of 75 μm or less was added to the mixture kept at 0° C., and 96 parts of coated particles with a size of 80 to 250 μm were obtained in the same manner as in Example 1 while stirring and mixing uniformly.

Example 6 A coating material consisting of (to) parts of hardened beef tallow (melting point 60°C), 2 parts of glycerin monoacetomonostearate, and 3 parts of glycerin diacetate monohardened soybean oil fatty acid ester was melted and heated to a temperature of 70 to 80°C. In the same manner as in Example 1, add L-ascorbic acid with a particle size of 75 μm or less, and while stirring and mixing uniformly, coated particles 9 with a size of 70 to 200 μm were added.
I got 7 copies.

Comparative Example 1 A coating consisting of part a of hardened beef tallow (melting point 60°C) was melted,
Example 1: Add L-ascorbic acid nodule of 75μ or less to a container kept at a temperature of 70 to 80°C, and stir and mix uniformly.
In the same manner as above, 96 parts of coated particles of 80 to 200 μm were obtained.

Comparative Example 2 A coating material consisting of (1) part of hardened beef tallow (melting point 60°C), 1 (2) part of glycerin monostearate, and w part of lecithin was melted and kept at a temperature of 70 to 80°C to form an L of 75μ or less. - Add the ascorbic acid nodule and proceed as in Example 1 while stirring and mixing uniformly to coat particles 9 of 80 to 250μ.
I got 7 copies.

Comparative Example 3 A coating material consisting of (4) parts of hardened beef tallow (melting point 60'C) and 35 parts of sucrose fatty acid ester was melted, and 75μ or less of L-ascorbic acid was added to the mixture while keeping the temperature at 70 to 90°C. , 80~ in the same manner as in Example 1 while stirring and mixing uniformly.
Test Example 1 in which 96 parts of coated particles of 250 μm were obtained. Samples of Examples and Comparative Examples were thoroughly mixed with the formulation (Table 1) in which excess minerals were added to wheat flour, and then left in a 30°C incubator. The residual rate of acid was measured.

L-ascorbic acid was measured as total L-ascorbic acid using the hydrazine method (Food Sanitation Inspection Guideline 1).

The results are shown in Table-2.

As can be seen from Table 2, the product of the present invention showed less change over time than the comparative example, and was found to have an excellent coating.

Test example 2 The effect on bread making was tested.

Table 5 shows the results of bread making using Comparative Examples 2 and 3, the product of the present invention, potassium bromate (promate), etc., according to the 70% medium dough method with the formulation shown in Table 3, and according to the bread making process shown in Table 4. It was shown to. As can be seen from Table 5, the products of the present invention are superior to the comparative examples, and the product evaluation results are comparable to those of Promate.

Claims (1)

[Scope of Claims] 1 1 part by weight of L-ascorbic acid or its salt, oil and fat having a melting point of 50 to 80°C, glycerin monoacetomonofatty acid ester, glycerin monoacetodifatty acid ester,
One or two glycerin diaceto monofatty acid esters
An L-ascorbic acid preparation containing 0.5 to 100 parts by weight of a coating agent consisting of at least one species. 2 L-ascorbic acid or its salts with a melting point of 50 to
L-, which is characterized by mixing oil and fat at 80° C. with a melt of one or more of glycerin monoacetomonofatty acid ester, glycerin monoacetodifatty acid ester, and glycerin diacetomonofatty acid ester to form a coated powder.
Method for producing ascorbic acid preparations.