JPH09157285A - Production of mixed powdery composition of ascorbic acid with maltitol having high fluidity - Google Patents

Abstract

PROBLEM TO BE SOLVED: To economically advantageously produce a mixed powdery composition of ascorbic acid with maltitol while solving problems such as deviation of components or fluidity. SOLUTION: This method for producing a mixed powdery composition of ascorbic acid with maltitol comprises successively passing through (1) the first step for respectively preparing a maltitol massecuite at 10-70wt.% suspended crystal content from an aqueous solution having 85-99.9wt.% maltitol purity at 70-90wt.% solid concentration and a massecuite from an aqueous solution of ascorbic acid having >=98wt.% purity, (2) the second step for keeping the introduction ratio of the maltitol massecuite at 5-80wt.% expressed in terms of solid content and the introduction ratio of the ascorbic acid massecuite at 20-95wt.% expressed in terms of the solid content, introducing the respective massecuites into a spray dryer and spray-drying the massecuites at 30-75 deg.C air blasting temperature.

Description

Detailed Description of the Invention

[0001]

TECHNICAL FIELD OF THE INVENTION

The present invention relates to a method for producing a highly fluid mixed powder composition of ascorbic acid and maltitol.

[0003]

2. Description of the Related Art

Maltitol powder is a sugar alcohol produced by catalytically hydrogenating maltose and pulverizing it, and has a sweetness similar to sugar and a sweetness degree similar to sugar as compared with other sugar alcohols, Since it is not easily assimilated by bacteria, it does not cause tooth decay and is not easily digested by human digestive enzymes, so it is widely used by diabetics, people who want to prevent obesity and tooth decay.

Maltitol powder represented by maltitol crystals is useful for various purposes such as non-hygroscopicity, stability to heat, not promoting insulin secretion, and having a favorable effect on absorption of various minerals. Since it has various functions, it is not only used for the above-mentioned special applications but also widely used as a material for general foods, pharmaceuticals, cosmetics and the like.

On the other hand, ascorbic acid is known as vitamin C, is produced in large quantities, and is used in various food applications such as various antioxidants and sourness, as well as in various industrial applications and pharmaceutical applications. ing.

[0007] However, when the application is further expanded, there remain problems such as the strong sourness of ascorbic acid, the oxidative decomposition during storage, which causes discoloration to yellow and the decrease in content. It was

Most of the products distributed with ascorbic acid are fine crystal products, and most of the products distributed with maltitol are crushed products or crystal products in which powder particles have sharp edges. Therefore, it was also a problem that the liquidity was rather low.

Therefore, there has been a demand for a highly fluid mixed powder composition of maltitol and ascorbic acid, which has a mellow sweetness similar to that of sugar.

Further, when preparing such a mixed powder composition, it has been a subject to prevent the components from being biased during storage and transportation and to improve the storability.

Therefore, it has been desired to develop a method for economically advantageously producing a mixed powder composition of ascorbic acid and maltitol while solving the problems such as the component bias and the fluidity.

[0012]

[Means for Solving the Problems]

In order to solve the above-mentioned problems, the inventors of the present invention have conducted extensive studies, and as a result, prepared maltitol maskit and ascorbic acid maskit and introduced them into a spray dryer at a specific ratio and spray-dried them. By doing so, there is no bias in the components as in conventional products, and it is economically advantageous,
We succeeded in developing a method for producing a highly fluid mixed powder of ascorbic acid and maltitol, and further prepared a mixed aqueous solution of high concentration of maltitol and ascorbins, and then cooled to form fine crystals. Mixing of ascorbic acid and maltitol has high fluidity and improved storage stability of ascorbic acid by preparing a musket with low viscosity and spray-drying, and there is no bias of components as in conventional products. The present invention has been completed by succeeding in economically producing the powder.

Means for solving the problems of the present invention are as follows.

The first aspect of the present invention relates to a method for producing a highly fluid mixed powder composition of ascorbic acid and maltitol, wherein 1) the maltitol purity is 85 to 99.9% by weight and the solid content concentration is 70. The first step of preparing a maltitol mass kit having an amount of suspended crystals of 10 to 70% by weight from an aqueous solution of maltitol of 90% by weight and a mass kit of an aqueous solution of ascorbic acid having a purity of 98 or more, 2) maltitol mass. The introduction rate of the kit is maintained at 5 to 80% by weight in terms of solid content, and the introduction rate of the ascorbic acid maskit is maintained at 20 to 95% by weight in terms of the solid content, and each of the maskits is introduced into the spray dryer, and the blowing temperature is 30 to 30%. Production of a highly fluid mixed composition of ascorbic acid and maltitol, characterized in that the two steps of the second step of spray drying at 75 ° C. are sequentially performed. It is the law.

In the second aspect of the present invention, in the first step, an ascorbic acid mass kit is prepared from an aqueous solution having a concentration of 20 to 35% and a purity of ascorbic acid of 98 or more, and the amount of suspended crystals of maltitol mass kit is 10 to 40. The method for producing a highly powdered mixed powder composition of ascorbic acid and maltitol according to the first invention, wherein the mixed powder composition has been adjusted to have a weight percentage.

A third aspect of the present invention relates to a method for producing a highly fluid mixed powder composition of ascorbic acid and maltitol, wherein 1) maltitol having a purity of 90 to 99.9% by weight is added in a solid content ratio of 5%. ˜80% by weight, ascorbic acid having a purity of 98% or more in a solid content ratio of 20 to 95% by weight, and an aqueous solution having a solid content concentration of 20 to 85% by weight is prepared at a temperature of 1%.
A first step of preparing a mass kit of a mixed aqueous solution of ascorbic acid and maltitol, which is cooled to 0 to 60 ° C., seed crystals are added and diluted if necessary, and stirred for about 0.5 to 10 hours, 2) Introduce the mass kit of the mixed aqueous solution of ascorbic acid and maltitol obtained in the first step into a spray drying device, and sequentially pass through the second step of spray drying at a blast temperature of 30 to 75 ° C. The method for producing a highly fluid mixed powder composition of ascorbic acid and maltitol.

In the fourth aspect of the present invention, the solid content concentration is 20 to 20 by adding one or a mixture of water, an aqueous solution of ascorbic acid and an aqueous solution of maltitol to the prepared mask. A method for producing a highly fluid mixed powder composition of ascorbic acid and maltitol according to the third aspect of the invention, wherein the viscosity of the musket is reduced by adjusting it to 80%.

The maltitol used in the present invention is required to have a quality capable of producing a maltitol mass kit in a good condition under the conditions of the present invention, but a high purity prepared by subjecting a starch liquefaction liquid to ordinary saccharification conditions. Maltitol obtained by reducing maltose has a purity of 85 to 99.9% and a solid content of 70 to 9
0%, more preferably 73 to 80%, most preferably 7
An aqueous solution of 5 to 78% generally satisfies the quality required for the present invention, but maltotriitol, maltotetriitol and the like having similar molecular weights tend to inhibit the crystal formation of maltitol. Those having a small amount of the component are preferable.

However, in the method of preparing the musket from the mixed aqueous solution of maltitol and ascorbic acid in the present invention, maltitol having a slightly high purity is required because the precipitation of crystals becomes difficult. , Preferably 90 to 99.9%, and more preferably 95 to 99.
9% maltitol should be adopted.

The ascorbic acid used in the present invention is
In the practice of the present invention, a high-purity product having a quality that easily produces an ascorbic acid mass kit is preferable, but a commercially available product or a product prepared for use as a food additive has an extremely high purity of 99% or more. Can be advantageously used for

One of the important points in carrying out the present invention is that
The point is to prepare a maltitol musket and an ascorbic acid musket, and in particular, in order to prepare an advantageous maltitol musket for carrying out the present invention, the maltitol aqueous solution is heated once to 100 ° C. or higher. By the means of 0.8
After making the degree of saturation low, the concentration is adjusted to 70 to 90%, more preferably 76 to 79%, and seed crystals are added if necessary, and fine maltitol crystals are added by stirring while cooling. And crystals are formed in the aqueous solution in an amount of 10 to 70
% More preferably, by adjusting the temperature so as to prevent further crystal formation and growth when the content is in the range of 10 to 35% and maintaining the saturation degree at about 1.0, stirring is performed for about 5 to 10 hours. A maltitol mass kit is obtained which is advantageously used in the invention.

In addition, although a large number of elongated crystals may be precipitated due to the effect of slow cooling when preparing the maltitol mass kit, there are too many suspended crystals or the crystals are too small to increase the viscosity. When the temperature becomes high, addition of water or a maltitol aqueous solution with sufficient stirring to reduce the solid content concentration can also be advantageously used in transporting the mass kit and obtaining a spray-dried product with excellent quality. .

When preparing a mass kit of ascorbic acid, since ascorbic acid has a high crystallization rate, seed crystals are added to the ascorbic acid aqueous solution prepared to a solid concentration of 20 to 35% as needed, and the mixture is rapidly cooled. Fine ascorbic acid crystals are generated by stirring, etc., and when the amount of crystals suspended in the aqueous solution is in the range of 5 to 30%, the temperature is adjusted so that crystals do not grow and grow further. By maintaining the saturation at about 1.0, the ascorbic acid maskit which is advantageously used in the present invention can be obtained.

Next, a method for preparing a musket from a mixed aqueous solution of ascorbic acid and maltitol will be described.

In the case of this method, the purity is 90 to 99.9%,
More preferably, 95 to 99.9% of maltitol is adopted, but a mixed aqueous solution having a solid content ratio of maltitol and ascorbic acid in the range of 5:95 to 80:20 is prepared,
After the concentration is adjusted to 20 to 85%, the temperature is rapidly cooled to 10 to 60 ° C, preferably 12 to 40 ° C, and ascorbic acid and / or maltitol seed crystals are added or diluted as needed with moderately strong stirring. Then, the mixture is gently stirred for 0.5 to 10 hours to precipitate fine crystals, whereby a mass kit of the mixed solution can be obtained.

Next, the second step of the present invention will be described.

When the maltitol musket and the ascorbic acid musket are separately prepared and then introduced into the spray dryer, the maltitol musket is introduced at a solid content of 5 to 80% by weight, and ascorbic acid is introduced. The proportion is kept at 20 to 95% by weight in terms of solid content, and both mass kits are mixed immediately before entering the spray dryer, or each mass kit is introduced into the spray dryer and then mixed on an atomizer or the like. It is possible to obtain a product having a relatively low hygroscopic property and to adjust the air temperature in the spray dryer within the range of 30 to 75 ° C. and the solid content ratio of each component within the above range. It is preferable because it satisfies the quality required by the market such as high uniform composition.

When spray-drying the mass kit prepared from a mixed aqueous solution of ascorbic acid and maltitol in the first step of the present invention, the solid content ratio of ascorbic acid and maltitol is adjusted beforehand at the aqueous solution stage. Therefore, the present invention can be carried out by introducing the mass kit as it is into the apparatus and operating it while adjusting the blowing temperature in the spray-drying apparatus within the range of 30 to 75 ° C.

The method of introducing the musket into the spray drying apparatus is not particularly limited as long as it is a method adopted in ordinary spray drying, but a method in which an atomizer is provided above the spray drying apparatus is used. The condition is easier to control than the nozzle type, and the blowing temperature is less than 30 ° C., the drying effect is insufficient and water remains too much, and when the temperature exceeds 75 ° C., Ascorbic acid often turns yellow and impairs quality.

Thus, when carrying out the second step of the present invention, the powder when dropped on the bottom of the spray dryer is dried to a sufficiently low water content.

However, in order to enhance the crystallization of maltitol, the water remaining in the powder works effectively, so that it is not always necessary to complete the drying at this point.

Further, in order to obtain the product of the present invention with stable quality, it is also advantageous to employ a method in which the powder after spray drying is kept at a temperature of about 25 ° C. for aging and then dried by a known method. You can

The spray-drying apparatus adopted in the present invention has a large diameter because the mass kit obtained by carrying out the present invention is difficult to spray-dry, and a product having high fluidity is obtained. However, specifically, those having a diameter of 5 meters or more, and more preferably 8 meters or more can be advantageously used.

As described above, in the process of the present invention, the heating and drying operations are completed in a relatively short time.
It is an economically advantageous method because it does not require strong mechanical kneading such as strong heating or a kneader method to color the components and does not require special equipment having a complicated structure. The product obtained by passing through the method has extremely high fluidity, does not cause component bias due to vibration during transportation and storage, and coexisting maltitol suppresses decomposition of ascorbic acid. Therefore, the storability is improved, and therefore, there is an advantageous feature that the properties, tastes, effects, etc. do not vary when used for various purposes.

Further, since the product obtained by the present invention has a lower hygroscopicity than that of the conventional product, it has an advantageous property that it is unlikely to cause solidification during storage.

[0037]

【Example】

Hereinafter, the method of the present invention will be described more specifically with reference to Examples and Comparative Examples, but the technical scope of the present invention is not limited to the following examples.

In the following examples,% means% by weight unless otherwise specified.

(Example 1)

<First Step> Commercially available ascorbic acid having a purity of 99.9% was adjusted to a concentration of 33% and rapidly cooled to 15 ° C. with stirring to precipitate fine crystals, and the temperature was kept at 15 ° C. While maintaining at 20 rpm, slow stirring at 20 rpm was continued for 5 hours to obtain an ascorbic acid mass kit.

Maltitol for food having a purity of 95.0% [registered trademark Amarti MR manufactured by Towa Kasei Kogyo Co., Ltd.] at a concentration of 7
After adjusting to 5% and heating to 100 ° C., the temperature was rapidly cooled to 15 ° C. over 30 minutes with stirring to precipitate fine crystals, and a slow stirring at 20 rpm was performed for 10 minutes. Continuously, a maltitol mass kit containing 35% of suspended crystals was obtained.

<Second Step> When each of the mass kits obtained in the first step is fed into the spray dryer by a pump, the solid content ratio of ascorbic acid is 60 and maltitol is 40, and the mixture enters the spray dryer. Immediately before, adjust so that both pipes are connected and each mass kit is introduced from one pipe, and the air temperature is 70 ° C, the air temperature is 35 ° C, and the temperature of the powder dropped to the bottom of the spray dryer is 35 ° C. The mixture was spray-dried so that the water content was 3% to obtain a highly fluid mixed powder composition of ascorbic acid and maltitol of the present invention.

The composition of the highly fluid mixed powder composition of ascorbic acid and maltitol obtained in this example was measured by liquid chromatography to find that it was 41% maltitol and 59% ascorbic acid.

Further, about 50 mesh powder of the mixed powder composition of ascorbic acid and maltitol having high fluidity obtained in this example was used as a repose angle measuring device (PT-D type).
As a result, the angle of repose was 30 ° and the powder was white and had a smooth appearance and was extremely fluid.

(Example 2)

<First Step> A mass kit of ascorbic acid was obtained in the same manner as in Example 1.

An aqueous solution of maltitol for food [purity 98%, manufactured by Towa Kasei Kogyo Co., Ltd., registered trademark RESIS] having a purity of 98% is 80% in concentration.
After concentrating to 100 ° C and heating to 100 ° C, the mixture is rapidly cooled to 15 ° C for 20 minutes with stirring, and a fine maltitol powder of 3% relative to the solid content of the maltitol liquid [Towa Kasei Kogyo Co., Ltd., registered trademark Lesis] was added to precipitate fine crystals, water was added to adjust the total concentration to 78%, and slow stirring at 20 rpm was continued for 10 hours. A maltitol mass kit having a turbid crystal amount of 35% was obtained.

<Second Step> In addition to the introduction ratios of the musket being 90 for ascorbic acid and 10 for maltitol,
In the same manner as in Example 1, each mass kit was pumped into a spray dryer and spray dried under the same conditions to obtain a highly fluid mixed powder composition of ascorbic acid and maltitol of the present invention. .

The composition of the highly fluid mixed powder composition of ascorbic acid and maltitol obtained in this example was measured by liquid chromatography to find that maltitol was 10.2% and ascorbic acid was 89.8%. Met.

Further, the water content of 0.3 obtained in this example.
% Powder of approximately 50 mesh of a highly fluid mixed powder composition of ascorbic acid and maltitol was measured by a repose angle measuring device (PT-D type), the repose angle was 33 °.
It was a powder with a smooth white appearance and excellent flowability.

(Embodiment 3)

<First Step> A mixed aqueous solution of maltitol having a purity of 99.0% [registered trademark of Towa Kasei Kogyo KK] and a ascorbic acid with a solid content ratio of 20:80 of 39% is prepared at a temperature of 60. Prepared at ℃, temperature 15 ℃ with stirring
The mixture was rapidly cooled to a mixed solution, and fine powdery maltitol with a solid content of 2% of the mixed aqueous solution was added as a seed crystal, and stirring was continued for 0.5 hour to sufficiently generate fine crystals, and the amount of suspended crystals was 23%.
A mass kit of a mixed aqueous solution of maltitol and sodium ascorbate was obtained.

<Second Step> The mass kit obtained in the first step was introduced into a spray dryer, and the air temperature was 65 ° C. and the air temperature was 3
8 ° C, the temperature of the powder dropped to the bottom of the spray dryer is 38
Spray-dried at 4 ° C. to a water content of 4%, and the obtained powder is kept at 38 ° C. for 1 hour for aging and then dried to obtain the fluidity of the sodium ascorbate of the present invention and maltitol. A high-mixture powder composition was obtained.

The powder of about 50 mesh of the highly flowable mixed powder composition of sodium ascorbate and maltitol obtained in this example had a water content of 0.2%. As a result of measurement, the angle of repose is 34 °
It was a powder with a smooth white appearance and excellent flowability.

(Example 4)

<First step> Maltitol having a purity of 98% [registered trademark resin, manufactured by Towa Chemical Industry Co., Ltd.] and a purity of 99.
After preparing an aqueous solution in which 8% ascorbic acid was mixed at a solid content ratio of 75:25 and concentrating it to a concentration of 85%,
After heating to 90 ℃, it is cooled rapidly to 15 ℃, 0.5% fine ascorbic acid and 0.3% maltitol crystals based on the solid content of the mixed aqueous solution [Towa Kasei Kogyo Co., Ltd.
Made, registered trademark Lesis] was added as a seed crystal, and the temperature was adjusted to 1
After gently stirring for 5 hours while maintaining at 5 ° C., water was added to adjust the solid content concentration to 78%, and the mixture was further stirred for 5 hours to prepare a mixed aqueous solution of maltitol and ascorbic acid having a suspended crystal content of 32%. I got a mask.

<Second Step> The mass kit obtained in the first step was introduced into a spray dryer, and the air temperature was 68 ° C. and the air temperature was 3
8 ° C, the temperature of the powder dropped to the bottom of the spray dryer is 38
At ℃, spray dry so that the water content is 3.4%,
The obtained powder was kept at 38 ° C. for 15 hours to be aged and then dried to obtain a highly fluid mixed powder composition of ascorbic acid and maltitol of the present invention.

The highly fluid mixed powder composition of ascorbic acid and maltitol obtained in this example had a water content of 0.3%, and a powder of about 50 mesh was measured as in Example 1. The angle of repose was 31 °, and the powder was white and had a smooth appearance and was extremely fluid.

[0060]

[Comparative example]

(Comparative Example 1)

<First Step> Maltitol with a purity of 83% and ascorbic acid with a purity of 99.9% were used in a solid content ratio of 17:
Prepare an aqueous solution mixed at a ratio of 83, concentrate it to a concentration of 85%, then heat it to 110 ° C. and then rapidly cool it to 15 ° C. Add the acid as seed crystals and raise the temperature to 15 ° C.
The mixture was stirred for 12 hours while maintaining the temperature at 0.degree. C., water was added to adjust the solid content concentration to 78%, and the mixture was further stirred for 5 hours to obtain a mass kit of a mixed aqueous solution of maltitol and ascorbic acid.

<Second Step> The mass kit obtained in the first step was introduced into a spray dryer, and the blowing temperature was 70 ° C. and the exhaust temperature was 4
As a result of spray-drying under the condition of 0 ° C., yellow glass-like solid matter adhered and accumulated on the wall around the atomizer of the spray-drying apparatus, and the spray-drying operation could not be continued.

The deposited glassy solid was scraped off, but it was lumpy and the angle of repose could not be measured.

(Comparative Example 2)

<First Step> A commercially available ascorbic acid having a purity of 99.9% was used to obtain an ascorbic acid mass kit in the same manner as in Example 1.

Maltitol for food [purity 98%, manufactured by Towa Kasei Kogyo Co., Ltd., registered trademark Lesis] was adjusted to a concentration of 65%, heated to 110 ° C. and then heated to 5 ° C. with stirring. Cool rapidly and add 0.2% of fine maltitol crystals to the liquid solids as seed crystals.
Slow stirring with 0 rotation was continued for 10 hours to obtain a maltitol mass kit having a suspended crystal amount of 3%.

<Second Step> When each of the mass kits obtained in the first step is fed into the spray dryer by a pump, the solid content ratio of ascorbic acid is 17 and maltitol is 83, and the mixture enters the spray dryer. Immediately before, both pipes were connected and adjusted so that each mass kit was introduced from one pipe, and when operated under the conditions of a blast temperature of 70 ° C and an exhaust air temperature of 40 ° C, the liquid sprayed on the wall of the spray dryer. Adheres and flows off,
The spray drying operation was impossible.

(Comparative Example 3)

<First Step> Commercially available ascorbic acid having a purity of 99.9% was adjusted to a concentration of 32%, heated to a temperature of 100 ° C., and then rapidly cooled to a temperature of 15 ° C. with stirring to form fine crystals. Precipitation was performed, the temperature was kept at 15 ° C., and slow stirring at 20 rpm was continued for 0.5 hours to obtain an ascorbic acid maskit.

Maltitol for food [purity 98%, Towa Kasei Kogyo Co., Ltd., registered trademark Lesis] was adjusted to a concentration of 84%, heated to 110 ° C., and then stirred to a temperature of 15 ° C. Cool rapidly to precipitate crystals, 20 minutes per minute
After slowly stirring the mixture for 10 hours, water was added to adjust the concentration to 82%, and the mixture was further stirred for 3 hours to obtain a maltitol mass kit with a suspended crystal content of 39%.

<Second Step> Each mass kit obtained in the first step was tried to be pumped into the spray dryer.
Both the ascorbic acid maskit and the maltitol maskit solidified in the pipe and the spray drying operation could not be performed.

[0073]

【The invention's effect】

According to the present invention, a mixed powder composition of ascorbic acid and maltitol can be produced economically and advantageously while solving the problems of component bias and fluidity.

That is, in the method of the present invention, the heating and drying operations are completed in a relatively short time, and there is no need for strong heating or mechanically strong kneading such as the kneader method, so that the components are colored. It is an economically advantageous method because it does not require special equipment with complicated structure, and the product obtained by passing through the method of the present invention has extremely high fluidity and is not easily stored during transportation or storage. Does not cause bias of the components due to vibration, etc., and the storage stability is improved because the decomposition of ascorbic acid is suppressed by the coexisting maltitol, therefore, the properties and taste when used in various applications, It has an advantageous feature that the effects do not vary.

Further, the product obtained by carrying out the present invention has a lower hygroscopicity than the conventional product, and therefore has an advantageous property such that it is hard to be solidified during storage.

Claims (3)

[Claims] 1. A method for producing a highly fluid mixed powder composition of ascorbic acid and maltitol, comprising: 1) a maltitol purity of 85 to 99.9% by weight and a solid content concentration of 70 to 90% by weight. The first step of preparing a maltitol mass kit having an amount of suspended crystals of 10 to 70% by weight from an aqueous solution of maltitol and a mass kit from an aqueous solution of ascorbic acid having a purity of 98 or more. 5 to 5 solids
80% by weight, the introduction rate of the ascorbic acid maskit is maintained at a proportion of 20 to 95% by weight in terms of solid content, each maskit is introduced into a spray dryer, and a second step of spray drying at a blast temperature of 30 to 75 ° C. The method for producing a mixed powder composition having a high fluidity of ascorbic acid and maltitol, which comprises sequentially passing through the two steps. 2. In the first step, an ascorbic acid maskit is prepared from an aqueous solution having a purity of 98 or more with an ascorbic acid concentration of 20 to 35%, and the amount of suspended crystals of the maltitol maskit is adjusted to 10 to 40% by weight. The method for producing a highly flowable mixed powder composition of ascorbic acid and maltitol according to claim 1, wherein 3. A method for producing a highly fluid mixed powder composition of ascorbic acid and maltitol, comprising: 1) maltitol having a purity of 90 to 99.9% by weight in a solid content ratio of 5 to 80% by weight; An aqueous solution having a solid content concentration of 20 to 85 wt% containing 20 to 95 wt% of ascorbic acid having a purity of 98% or more in a solid content ratio was prepared, and the temperature was 10 to 60 ° C.
The first step of preparing a mass kit of a mixed aqueous solution of ascorbic acid and maltitol, which is cooled to 40 ° C., added and diluted with seed crystals as needed, and further stirred, 2) the ascorbic acid obtained in the first step Introduce the mass kit of the mixed aqueous solution of and maltitol into the spray dryer,
A method for producing a highly fluid mixed powder composition of ascorbic acid and maltitol, which comprises sequentially passing through two steps of a second step of spray drying at a blast temperature of 30 to 75 ° C.