JP2001224327A - Powdery acidulant and method for producing the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a powdery acidulant delaying the elution of the acidity ingredient in the mouth, and sustainedly presenting strong sourness even if stayed long in the mouth, and to provide a method for producing the powdery acidulant. SOLUTION: This powdery acidulant is obtained by a fluidized bed layering granulation method using a spray drying-type fluidized bed granulating apparatus through which spherical granules are produced continuously and directly from a liquid raw material; wherein the bulk density of the powdery acidulant is designed to be 0.40 g/cm3-0.95 g/cm3. The other objective method for producing the powdery acidulant comprises spraying an acidulant composition into an acidulant nuclear particle bed fluidized by heated air, and keeping the temperature of the fluidized bed at 80 deg.C-140 deg.C to produce the powdery acidulant having a bulk density of 0.40 g/cm3-0.95 g/cm3 and hardness of 0.5 gf/mm2-1.0 gf/mm2.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a powdered acidulant having excellent acidity persistence and a method for producing the same.

[0002]

2. Description of the Related Art Conventionally, when a powdery acidulant for a food additive is produced, it is handled in various forms, such as a crystal of the acidulant as it is, a fine powder obtained by grinding the crystal, or a granule obtained by granulating the fine powder. Have been.

[0003] However, these were not satisfactory in terms of moisture absorption, fluidity, and sustainability of taste. Heretofore, several techniques have been already known for improving the physical properties of powdered acidulants or maintaining the taste. For example, a method of producing a coated organic acid by spray-cooling a molten mixture of an organic acid and a hardened animal and vegetable oil (Japanese Patent Laid-Open No.
No. 32217), mixing an organic acid with calcium lactate
Organic acid coating method for forming a coating by heating
No. 4,305,583), a method of producing a coated organic acid by suspending and heating an organic acid powder in a solvent comprising a melting edible fat or oil and a phospholipid having a melting point of 40 ° C. or higher, and then spray cooling. 55-88666), a method of producing a coated organic acid by dissolving an organic acid containing sorbic acid and a hardened oil in a low-boiling alcohol and spraying it under reduced pressure (JP-A-63-36759). However, the techniques described in these publications have a problem that they are not yet satisfactory because of insufficient coating. As a further improved technique, Japanese Patent Application Laid-Open No. 8-116
No. 909 discloses a method of coating a powdered acidulant with a lipid powder having a melting point of 40 ° C. or higher. However, since this method also uses a lipid powder having a melting point of 40 ° C. or higher, The problem is that it is unpalatable and lacks practicality.

[0004] On the other hand, the spray drying method is a very excellent method used in a manufacturing process of drying and pulverizing a liquid food, but as shown in FIG. For this reason, there is a case where fluidity is lacking or moisture is absorbed, and there is a defect in handling. Furthermore, the expression of the taste was also biased toward the first occurrence and lacked in sustainability.

As a method for improving these physical properties or sourness, granulation is performed by granulating fine particles obtained by spray drying or the like, and recently, spray drying is performed. An apparatus having a function of fluidized bed granulation in the apparatus has been developed. The granulated powdered acidulant produced by these apparatuses has a granulating mechanism of “fluidized bed coagulation granulation” and has an irregular shape having a porous coagulation structure as shown in FIG. 4 (b). However, although the physical properties are improved, there is a problem that when added to food, the development of sourness in the mouth is biased toward the onset and lacks sustainability. Further, as shown in FIG. 4 (c), the wet-stirred granulated acidulant obtained by the wet-stirred granulator also has an irregular shape having a porous cohesive structure, so that the physical properties are improved as described above. However, there is a problem that when added to food, the development of sourness in the mouth is biased toward the onset and lacks sustainability.

Further, in the case of producing heavy and beautiful spherical granules as an end product, an extrusion granulator or the like is used, but as shown in FIG. It is necessary to go through a number of steps to produce a product, form it into a spherical granule by rolling it with a rolling type sphering device, etc., and perform finish drying, and also, the particle size of the obtained granule is too large Has issues. Therefore, it is sometimes inappropriate to use it in foods as a powdered acidulant.

[0007]

SUMMARY OF THE INVENTION The present invention is to solve the above-mentioned conventional problems and the like.
An object of the present invention is to provide a powdered acidulant having excellent sustainability, which delays the dissolution of sour components in the mouth and expresses a strong acidity even in the mouth for a long time, and a method for producing the same.

[0008]

Means for Solving the Problems The present inventors have conducted intensive studies in order to solve the above-mentioned conventional problems and the like. By finding that it is most suitable, and by finding that the granular powdered acidulant is produced directly and continuously from the liquid raw material by granulation using a specific device for producing spherical granules, The present invention has been completed. That is, the present invention resides in the following (1) to (5). (1) A powdered acidulant obtained by a fluidized-bed layering granulation method using a spray-drying type fluidized-bed granulator for continuously producing spherical granules directly from a liquid raw material, wherein the powdered acidulant Of 0.40 g / cm ^{3 to} 0.95 g / cm ³
A powdered acidulant characterized in that: (2) The hardness of the powdered acidulant is 0.5 gf / mm ² to 1. Og
The powdered acidulant according to the above (1), which has an f / mm ² of f / mm ² . (3) The average particle size of the powdered acidulant is 50 μm to 1000 μm
The powdered acidulant according to the above (1) or (2), wherein (4) The acidulant composition is sprayed into a bed of flavorant core particles fluidized by heated air, and the temperature of the fluidized bed is set to 80 ° C.
A method for producing a powdered acidulant, comprising producing a powdered acidulant by maintaining the temperature at -140 ° C. (5) The method for producing a powdered acidulant according to the above (4), wherein the acidulant core particles are produced by directly spraying the acidulant composition into a fluidized bed.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The contents of the present invention will be described below in detail with reference to the drawings. FIG. 1 is a partial cross-sectional view of the powdered acidulant of the present invention, and FIG. 2 is an explanatory diagram illustrating the growth mechanism of the powdered acidulant of the present invention. The powdered acidulant 10 in the present invention is directly directly from a liquid raw material,
It is a powdered acidulant obtained by a fluidized-bed layering granulation method using a spray-drying type fluidized-bed granulator for producing spherical granules, and as shown in FIG. The sour agent core particles 11 are sour powder particle layers 12, 12 having sour powder particles by fluidized bed layering granulation.
Has a single particle structure coated with multiple layers.

The powdered acidulant 10 is fluidized-bed layered using an apparatus for continuously producing spherical granules directly from a liquid raw material, for example, a spray-drying fluidized-bed granulator 20 shown in FIG. It is obtained by a granulation method. This powdered acidulant 10 is obtained by the following growth mechanism. In the spray-drying fluidized-bed granulator 20 shown in FIG. 2 (I), a liquid composed of an acidulant composition supplied by a spray nozzle (not shown) into an empty tower (spray zone) 21 into which a high-temperature air flow flows. The raw material is atomized in the process of ascent and dried instantaneously to become fine particles (several μm to several tens μm) 22 and captured by the upper back filter unit 23. In the back filter unit 23, particles are removed by periodically blowing compressed air into the inside (pulse jet backwashing method). The fine particles fall into the lower spray zone 21 due to their inertial force, where they become sour agent core particles and are layered on the liquid raw material. The acidulant core particles are recaptured in the upper back filter 23 while accompanied by particle growth of only the layered eluted solids.

That is, the liquid raw material comprising the flavor composition is consumed for layering of the once generated sour core particles along with the generation of fine sour core particles (indicated by reference numeral 11 in FIG. 1) by spray drying. You. With the continuation of these phenomena, the particles grow, and when the particle diameter eventually grows below the terminal speed relative to the rising speed of the hot air flow, the particles form a fluidized bed at the bottom of the apparatus [ FIG. 2 (II)]. Next, while the liquid raw material composed of the acidulant composition being sprayed and supplied at a high pressure from the spray nozzle layers the grown fluidized bed particles, a part thereof blows through these particle layers to form fine acidulent core particles. Is generated [FIG. 2 (III)]. Thus, the powdered acidulant (granule product) 10 grown based on the granulation mechanism in which the spray drying principle and the fluidized bed layering principle are combined has a structure as shown in FIG. In addition, in the case of batch operation, the discharge of the granule product is performed collectively through the discharge port 24 in the center of the ventilation plate. In the continuous operation, from the time when the fluidized bed reaches a predetermined granule hold amount (FIG. 2 (III)), continuous / quantitative measurement is performed through a discharge machine with a seal (a rotary valve or the like) from a discharge port equal to the solids supply speed. Is extracted.

The structure of the granulation device used in the present invention is not particularly limited as long as it is a spray-drying type fluidized bed granulation device established as a fluidized bed layering granulation method. For example, Agromaster AGM-S
D-type (manufactured by Hosokawa Micron Corporation). In this spray-drying type fluidized bed granulator, conventional drying (spray drying or vacuum drying), liquid addition (adjustment of water content for granulation), granulation (fluidized bed or extrusion granulator), spheronization (rolling spherical shape) ) And finish drying (fluid dryer) can be realized by one apparatus (one process), so that the powdered acidulant can be obtained by an efficient and economical granulation drying system.

In the present invention, the bulk density of the powdered acidulant obtained by the above-mentioned fluidized bed layering granulation method is 0.40.
^{g / cm 3 ~0.95g / cm 3} , preferably 0.50g
/ Cm ^{3 to} 0.90 g / cm ³ , more preferably 0.50
there needs to be ^{g / cm 3 ~0.80g / cm 3} . In addition, the adjustment of the bulk density of this powdered acidulant can be performed mainly by maintaining the temperature of the fluidized bed described below at 80 ° C to 140 ° C. The bulk density of this powdered acidulant is 0.4
Be adjusted to 0g / cm ³ ~0.95g / cm ^3, the sour powder particle layer with predominantly above sour powder particles 12,1
2 ... will be reflected in the thickness of the multilayer coating layer. The bulk density of this powdered acidulant is 0.40 g / cm ^3-
By setting the content to 0.95 g / cm ³ , it is possible to obtain a powdered acidulant having excellent sustainability, which delays the elution of sour components in the mouth for the first time and develops a strong acidity even in the mouth for a long time. If the bulk density of the powdered acidulant is less than 0.40 g / cm ³ , a powdered acidulant excellent in the desired durability cannot be obtained, and a significant effect is observed between the powdered acidulant and the granules according to the prior art. If it is difficult, and the amount exceeds 0.95 g / cm ³ , the possibility of being felt as a foreign substance in the mouth increases,
Not preferred. Incidentally, the measurement of the bulk density in the present invention,
The measurement was performed with an ABD-powder property measuring device (manufactured by Tsutsui Chemical Co., Ltd.).

The hardness of the powdered acidulant in the present invention is not particularly limited, but is preferably a hardness meter (MCTM-50, a micro compression tester manufactured by Shimadzu Corporation).
0) in a measured value of 0.5 gf / mm ^{2 to} 1.0
gf / mm ^2, more preferably 0.5gf / mm ² ~0.
It is desirably 8 gf / mm ² . 0.5g hardness
If it is less than f / mm ² , the difference in effect from the conventional granules tends to be small, and if it is more than 1.0 gf / mm ² , the possibility of being felt as a foreign substance in the mouth is high, and it is preferable. Absent.

Furthermore, the average particle size of the powdered acidulant in the present invention is preferably 50 μm to 1000 μm, and more preferably 100 μm to 700 μm. If the average particle size is less than 50 μm, the intensity of sourness tends to be weak, and if it exceeds 1000 μm, the possibility of being felt as a foreign substance in the mouth is increased, which is not preferable. In addition, the average particle diameter in the present invention refers to a value measured based on a sieving method using a JIS standard sieve. The hardness and / or the average particle size of the powdered acidulant can be adjusted by adjusting the temperature of the fluidized bed, the amount of air blow, the flow rate of the spray solution, the flow rate and pressure of the spray air, and the like, which will be described later.

The acidulant composition used as a liquid raw material in the present invention is not particularly limited as long as it contains an acidulant, but is preferably an acidulant, water (purified water, ion-exchanged water). And those composed of excipients. As the acidulant, for example, citric acid, malic acid, tartaric acid,
Examples include lactic acid, acetic acid, glucono delta lactone, gluconic acid, fumaric acid, monosodium fumarate, phosphoric acid, and the like, and these can be used alone or in combination of two or more. Excipients include, for example, glucose, fructose, monosaccharides such as galactose, sucrose, disaccharides such as maltose, starch partially decomposed products obtained by liquefying starch, tragacanth gum, xanthan gum, and natural and synthetic pastes such as carboxymethyl cellulose. And proteins such as gelatin, casein, etc., and these can be used alone or in combination of two or more.

The acidulant composition of the present invention may further contain a fragrance. Such flavors include, for example, peppermint oil, spearmint oil, orange oil, lemon oil, grapefruit oil, lime oil, lavender oil, jasmine oil, sage oil, laurel oil, chamomile oil, basil oil, caraway oil, cardamom Oil, cinnamon oil, ginger oil, coriander oil, geranium oil,
Essential oils such as hyssop oil, oris oil, dabana oil, elemi oil, osmanthus oil, paprika oleoresin, spice extracts such as vanilla extract, l-menthol,
Synthetic fragrances such as carvone, eugenol, isoeugenol, esters, ionone, vanillin, ethylvanillin, and maltol are exemplified, and these can be used alone or in combination of two or more. When using these fragrances, if the fragrance is oil-soluble, it is used in combination with an emulsifier. As an emulsifier, for example,
Examples thereof include gum arabic, sucrose fatty acid ester, lecithin, polyglycerin fatty acid ester, and quillajasaponin, and these can be used alone or in combination of two or more.

[0018] As described above, the production method of the present invention uses a spray-drying fluidized-bed granulator for producing spherical granules continuously and directly from an acidulant composition as a liquid raw material. A granulation method is performed in which a liquid raw material to be an acidulant composition is sprayed into a bed of acidulant core particles fluidized by heated air, and the temperature of the fluidized bed is set to 80 ° C to 14 ° C.
By maintaining the temperature at 0 ° C., the desired powdered acidulant can be produced. The temperature of the fluidized bed is preferably from 90C to 120C, more preferably from 95C to 115C.
C is desirable. When the temperature of the fluidized bed is lower than 80 ° C., drying of water is slow and production time is long.
If the temperature exceeds 40 ° C., volatilization of the sour component and thermal deterioration occur, so that it tends to be difficult to obtain a powdered sour agent with excellent quality, which is not preferable.

In the present invention, the acidulant core particles are obtained by emulsifying and spray-drying the acidulant composition as described above, and spraying the emulsion of the acidulant composition into a fluidized bed. Thus, it can be produced directly in a fluidized bed.

The powdered acidulant of the present invention thus constituted can be continuously and directly produced from a liquid raw material (acidulant composition) by using a spray-drying fluidized-bed granulator for producing spherical granules.
It is obtained by a fluidized bed layering granulation method, and has a bulk density of the powdered acidulant of 0.40 g / cm ^{3 to} 0.95 g / c.
With m ^3, delaying the dissolution of the sour components in the first mouth, to express the sour even long in the mouth, and has excellent durability. Even powder acidulant obtained by the fluidized bed layering granulation, but the bulk density is out of the range of 0.40g / cm ³ ~0.95g / cm ^3, the effect of the present invention It cannot be achieved. Further, a powdery acidulant obtained by a conventional spray drying method, a device provided with a function of fluidized bed granulation in a spray drying device (fluidized bed coagulation granulation device), or a wet stirring granulation device. Bulk density 0.40g / c
Even if m ^{3 to} 0.95 g / cm ³ , the effects of the present invention cannot be achieved (these points will be described in more detail in Examples, Comparative Examples, and the like described later).

In the production method of the present invention, the acidity fluidized by heated air is used by using a spray-drying type fluidized-bed granulator equipped with a granulation mechanism in which the spray-drying principle and the fluidized-bed layering principle are combined. The liquid raw material to be the acidulant composition is sprayed into the bed of the raw material core particles, and the temperature of the fluidized bed is set to 80 ° C to 140 ° C.
By keeping the temperature at ° C., the desired powdered acidulant can be produced in one process.

The powdered acidulant of the present invention delays the elution of sour components in the mouth, develops a strong acidity even in the mouth for a long time, has excellent durability, and is preferably used for foods. For example, chewing gum, chewing candy, gummy and the like that can be chewed in the mouth for a long time can be mentioned.

[0023]

EXAMPLES Next, the present invention will be described more specifically with reference to examples and comparative examples, but the present invention is not limited to the following examples.

Example 1 A mixture consisting of 120 g of water (purified water) and 90 g of dextrin (DE10) was heated and sterilized by heating to 80 ° C. and cooled to 40 ° C. An acid solution consisting of 30 g of water (purified water) and 10 g of citric acid was added thereto, followed by stirring and mixing. The resulting emulsion was subjected to fluidized bed layering granulation at 105 ° C. using Agromaster AGM-SD (manufactured by Hosokawa Micron), and after sieving, 86 g of sour powder granules were obtained.
The average particle size of the powder granules is 100 μm to 800 μm
The bulk density is 0.75 g / cm ³ and the hardness is 0.69 g
f / mm ² .

Comparative Example 1 A mixture consisting of 120 g of water (purified water) and 90 g of dextrin (DE10) was heated and sterilized by heating to 80 ° C., and then cooled to 40 ° C. An acid solution consisting of 30 g of water (purified water) and 10 g of citric acid was added thereto, followed by stirring and mixing. The obtained emulsion was spray-dried using a spray dryer (manufactured by Okawara Kakoki Co., Ltd.) at a blowing air temperature of 150 ° C. and an exhaust air temperature of 80 ° C. After sieving, 91 g of an acidulant powder preparation was obtained. The average particle size of this powder was 50 μm to 150 μm, the bulk density was 0.40 g / cm ³ , and the hardness was 0.32 gf / mm ² .

COMPARATIVE EXAMPLE 2 300 g of the acidulant powder preparation obtained in Comparative Example 1 was blasted with 100 g of a guar gum aqueous solution adjusted to 0.5% by weight using a flow coater (manufactured by Uniglat) at a blowing temperature of 70 ° C. Was performed to obtain a fluidized-bed granulation, thereby obtaining 275 g of sour powder granules. The average particle size of the powder granules is 100 μm to 800 μm, and the bulk density is 0.1 μm.
The hardness was 25 g / cm ³ and the hardness was 0.15 gf / mm ² .

[Comparative Example 3] 75 g of fine anhydrous citric acid powder was mixed with 25 g of hardened oil (melting point: 50 to 52 ° C) for 2 hours using an automatic mortar (Labomiru Model UT-21, manufactured by Yamato Kagaku Co., Ltd.), followed by oil and fat coating. 92 g of powdered acidulant was obtained.

Test Example 1 The acidity of Example 1 and Comparative Examples 1 to 3 was evaluated by the following method under the recipe shown in Table 1 below. First, a gum base, sugar, glucose, corn syrup and a fruit mix powder flavor were mixed, and the same amount of citric acid as in Example 1, Example 1 of the present invention, Comparative Example 1 was used.
3 were added to each other, mixed at about 50 ° C. using a high-shear mixer according to a conventional method, cooled, and then roll-molded to prepare 3 g of sheet gums A to E each. In addition, the plate gum B is an example (control) in the case where it does not contain an acidulant. These panel gums A to E were subjected to sensory evaluation of flavor and acidity by 10 panelists. Evaluation is 15
The evaluation of the intensity of the acidity after seconds and after 120 seconds was performed by a seven-step method. The results are shown in Table 2 below.

[0029]

[Table 1]

[0030]

[Table 2]

As is clear from the results shown in Tables 1 and 2, the plate gum A using Example 1 according to the present invention was replaced with the plate gum B using Control and Comparative Examples 1 to 3 according to the prior art. As compared with the granular powdered acidulants of Nos. ~ D, etc., it was found to be extremely excellent in the persistence of acidity.

[Test Example 2] The panel gums A to E prepared in Test Example 1 were subjected to sensory evaluation of flavor and acidity by 10 expert panelists as follows. Evaluation is 0 seconds after starting to bite,
After 15 seconds, 30 seconds, 60 seconds, 90 seconds, 120 seconds, and 150 seconds, the evaluation of the intensity of acidity was performed by a five-step method. FIG. 3 shows the results [mastication time (seconds) and sourness] obtained in this test example. As shown in FIG. 3, the plate gum A using the powdered acidulant of Example 1 according to the present invention was a control plate gum B containing no acidulant and a plate gum C using the spray-dried product of Comparative Example 1. , Comparative Example 2
It was found that, compared to the plate gum D using the fluidized-bed granulated product of No. 3 and the plate gum E using the wet-type granulated product of Comparative Example 3, the persistence of sourness was excellent.

[0033]

Industrial Applicability According to the present invention, a powdery acidulant having excellent sourness persistence, which can delay the dissolution of sour components in the mouth and exhibit strong sourness even in the mouth for a long time, and its A manufacturing method is provided.

[Brief description of the drawings]

FIG. 1 is a partial sectional view of a powdered acidulant of the present invention.

FIG. 2 is an explanatory view illustrating a growth mechanism of the powdered acidulant of the present invention.

FIG. 3 is a characteristic diagram showing a relationship between chewing time (seconds) and strength of sourness.

FIG. 4 (a) is an explanatory diagram of a powdered acidulant obtained by a conventional spray drying method, and FIG. 4 (b) is an explanatory diagram of a powdered acidulant obtained by a conventional fluidized bed coagulation granulator. And
(C) is an explanatory view of a powdered acidulant obtained by a wet stirring granulator, and (d) is an explanatory view of a cylindrical granulated product obtained by using a conventional extrusion granulator.

Claims (5)

[Claims] 1. A powdered acidulant obtained by a fluidized-bed layering granulation method using a spray-drying-type fluidized-bed granulator that continuously and directly produces spherical granules from a liquid raw material, wherein The bulk density of the acidulant is 0.40 g / cm ^{3 to} 0.
A powdered acidulant having a weight of 95 g / cm ³ . 2. The powdery acidulant has a hardness of 0.5 gf / mm ^2.
~1.0gf / mm ² a is claim 1, wherein the powder acidulant. 3. The powdery acidulant having an average particle size of 50 μm to 1 μm.
The powdered acidulant according to claim 1, which has a particle size of 000 μm. 4. A powdered acidulant is produced by spraying the acidulant composition into a bed of acidulant core particles fluidized by heated air and maintaining the temperature of the fluidized bed at 80 ° C to 140 ° C. A method for producing a powdered acidulant, comprising: 5. The method for producing a powdered acidulant according to claim 4, wherein the acidulant core particles are produced by directly spraying the acidulant composition into a fluidized bed.