JP3624038B2 - Sugar-coated solids and method for producing the same - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
[0002]
The present invention relates to a sugar-coated solid and a method for producing the same, and more particularly to a sugar-coated solid using trehalose and a method for producing the same.
[0003]
[Prior art]
[0004]
Trehalose is a non-reducing carbohydrate in which the reducing groups of two molecules of glucose are α- and α-bonded.
[0005]
Its existence has been known for a long time, and it is contained in large amounts in mushrooms and yeasts.
[0006]
Trehalose is generally said to be excellent in moisture retention and is known to exist as a crystalline solid of anhydrous crystals or dihydrate crystals.
[0007]
Anhydrous crystals are relatively strong in hygroscopicity, and dihydrate crystals are characterized by low hygroscopicity.
[0008]
In the past, trehalose could not be produced at low cost, and its use research was mostly related to special applications with high added value.
[0009]
However, recently, the enzyme saccharification method has produced a large amount and low cost from starch, and a proposal for sugar coating as an application of the method has been made, for example, in JP-A-7-143874.
[0010]
This proposal is based on 40 parts by weight of water containing trehalose, 2 parts by weight of pullulan (average molecular weight 200,000), 30 parts by weight of water, 25 parts by weight of talc and 3 parts by weight of titanium oxide, and then 65 parts by weight of water containing trehalose. In this method, an overcoat liquid consisting of 1 part by weight of pullulan and 34 parts by weight of water is used for the uncoated tablet.
[0011]
[Problems to be solved by the invention]
[0012]
However, as a result of actual trials by the present inventors, it has been found that many problems remain in the conventional method and the sugar-coated products obtained by the method.
[0013]
For example, a large amount of talc is used in the underlaying solution of the conventional method, but since it is not permitted to use such a large amount of talc in foods, this method cannot be applied to foods. There is.
[0014]
In addition, the concentration of the overlay solution employed in the conventional method is 65 parts by weight of the trehalose-containing crystals with respect to 34 parts by weight of water. At this concentration, trehalose crystals adhering to the core agent are not formed when the film is formed. The problem that it tends to be uniform and is difficult to become a product was also left.
[0015]
Furthermore, since the concentration of the trehalose solution to be used is high, it is required to increase the storage temperature of the solution. Therefore, the storage and transfer equipment used in general sugar solutions such as sugar cannot be used as it is. There were still problems such as the need to rework and the sugar solution coloring during storage.
[0016]
In addition, the conventional method describes the sugar coating liquid temperature, core agent temperature, trehalose purity, number of rotations of sugar coating machine such as coating pan, time required for one repeated operation, amount of syrup used, etc. However, when trehalose is used for sugar coating as in the case of sugar, crystals grow unevenly on the sugar coating surface due to the relatively slow crystal growth rate of trehalose, resulting in unevenness. It was also found that there were inconveniences such as being able to do so.
[0017]
[Means for Solving the Problems]
[0018]
In order to solve the various problems described above, the present inventors have studied the behavior of crystallization of trehalose earnestly. As a result, when trying to form a film, the inventors avoided conditions where anhydrous crystals of trehalose were generated, and dihydrated. We have succeeded in solving the above-mentioned problems by finding special behaviors that occur during the operation of sugar coating, such as the necessity of selecting conditions for growth of physical crystals, and selecting various conditions strictly.
[0019]
Means for solving the problems of the present invention are as follows.
[0020]
The first aspect of the present invention is a sugar-coated solid material characterized in that the sugar-coated portion contains trehalose having a purity of 95% by weight or more and has a smooth crystalline surface.
[0021]
In addition, the present invention is secondly trehalose syrup having a trehalose purity of 98% by weight (hereinafter sometimes simply referred to as “%”), a concentration of 45 to 60% and a temperature of 30 to 60 ° C. A sugar-coated solid product having a sugar-coated portion containing trehalose having a purity of 95% or more and a crystalline surface having a smooth surface, wherein the sugar-coated portion is brought into contact with a core agent adjusted to a temperature of 20 to 50 ° C. It is.
[0022]
In addition, the present invention is a sugar-coated solid material characterized in that the sugar-coated portion contains trehalose having a purity of 98% or more and the surface is a smooth crystalline material.
[0023]
The present invention also relates to a core agent in which trehalose syrup having a trehalose purity in a solid substance of 98% or more, a concentration of 45 to 60%, and a temperature of 30 to 60 ° C. is adjusted to a temperature of 20 to 50 ° C. It is a method for producing a sugar-coated solid product in which the sugar-coated portion contains trehalose having a purity of 98% or more and has a smooth surface.
[0024]
Further, the present invention is the sugar-coated solid product according to the first invention, wherein trehalose in the sugar-coated portion is substantially trehalose dihydrate crystals.
[0025]
The present invention is also the method for producing a sugar-coated solid according to the second invention, wherein the trehalose in the sugar-coated portion is substantially trehalose dihydrate crystals.
[0026]
The trehalose used in the present invention is not particularly limited in its origin or production method, and may have a purity of 98% or more. However, according to the knowledge of the present inventor, trehalose crystal growth and crystals compared to other sugars. The rate of body formation is slow, and because the crystal growth rate when forming a film may be slow, etc., it is preferable that the content of polysaccharides is small in addition to the purity being 98% or more. Less impurities such as inorganic ions are preferred.
[0027]
The purity of trehalose in water-soluble ingredients is 95% or more, more preferably 98% or more even when various additives, fragrances, reinforcing agents, powders, etc. employed when trehalose is used in sugar coatings are added. If so, there is little trouble in the implementation of the present invention, and an appropriate crystal growth rate can be obtained in forming a smooth surface film.
[0028]
In addition, when trehalose is used for sugar coating, it is used in the form of a syrup in which the solid content is adjusted to 45 to 60%, but when the solid content is less than 45%, it takes a long time to form crystals. Therefore, it is not practical, and when the concentration exceeds 60%, the viscosity tends to be high, and the syrup may pull the yarn or the syrup may not reach the surface of the core.
[0029]
The temperature of the trehalose syrup used in the present invention is preferably adjusted in advance to a range of 30 to 60 ° C. in order to obtain a smooth and uniform sugar-coated surface after drying with air.
[0030]
The trehalose syrup prepared as described above is applied to the core in a commonly used sugar coating apparatus such as a coating pan.
[0031]
In that case, it is preferable to adjust the temperature of a core agent in the range of 25-50 degreeC.
[0032]
It is not preferable that the temperature difference between the trehalose syrup and the core used is extremely large, and it is usually preferable to increase the temperature of the syrup by about 5 to 10 ° C.
[0033]
At this time, when the temperature of the core is less than 25 ° C., the temperature difference from trehalose syrup tends to be large, and it is not preferable because it is difficult to obtain an appropriate crystal precipitation rate or crystal growth rate. In many cases, an appropriate amount of crystals is not generated in the syrup on the sugar-coated surface in order to obtain a crystalline film, and abrupt formation of crystals and nonuniform surfaces are generated as a result of drying. Because it tends to be, it is not preferable.
[0034]
When preparing hard sugar coatings, gums and polysaccharides commonly used for sugar coatings, various sweeteners and extracts, acidulants, coloring agents, fragrances, etc. are used under and on the sugar coating and on the sugar coating film. It can also be advantageously employed.
[0035]
The liquid pouring and drying operations are repeated according to the desired film thickness under the conditions described above.
[0036]
The normal number of repetitions is about 20-100 times.
[0037]
In addition, as a trehalose syrup for preparing a hard film, a trehalose crystal suspended in a trehalose aqueous solution can be used, and the advantage of using this is relatively thick with a small number of repetitions. For example, the film can be obtained and the crystal growth rate can be increased during drying.
[0038]
In addition, by applying the powdering operation while repeating the above liquid application, soft (soft) sugar coating is also possible. At the time of powder application, fine powder of trehalose dihydrate crystals is used as the main component of the dusting mix. Then, effects such as obtaining a suitable crystal growth rate when forming the film and obtaining a relatively thick film with a small number of repetitions of sugar coating operations are obtained.
[0039]
In addition, there are no special restrictions on the equipment for performing sugar coating using trehalose syrup.
[0040]
However, sugar coating using trehalose has a relatively narrow range of suitable preparation conditions compared to other sugars, and the quality of the product is easily affected by slight changes in conditions.
[0041]
Therefore, it is desirable to operate carefully so as not to deviate from the above-mentioned conditions when manually using a coating revolving pan, and when setting an automatic sugar coating machine, careful conditions should be set.
[0042]
As described above, by implementing the present invention, it is possible to obtain a good sugar-coated solid that is stable even in a high humidity atmosphere and has no unevenness on the surface.
[0043]
【Example】
[0044]
[Example-1]
[0045]
Put 300 g of a pillow-type chewing gum center sweetened with maltitol [manufactured by Towa Kasei Kogyo Co., Ltd., Amalty MR] into a small sugar-coating machine (Kikusui Seisakusho, 16DS type). While rotating at a speed of 23 times per minute, air at a temperature of 40 ° C. was applied and dried by heating to 30 ° C., and an aqueous solution prepared by adding trehalose having a purity of 99.1% to a concentration of 54% at a temperature of 60 ° C. The warmed product was applied to such an extent that the center was wetted, then dried by applying air at a temperature of 40 ° C., and the operation of dipping and drying was repeated 34 times to obtain 395.7 g of a sugar-coated semi-finished product.
[0046]
Next, after the sugar-coated semi-finished product was dried at a temperature of 35 to 40 ° C. for 20 hours under normal pressure and warm air drying conditions, 389.0 g of a product (practical product-1) was obtained. It has an elegant sweetness, a smooth surface, and a pleasant crispy texture when chewed. The trehalose purity of the sugar-coated part was confirmed to be 98.9%.
[0047]
[Example-2]
[0048]
The temperature of the gum center was set to 27 ° C., and an aqueous solution prepared with trehalose having a purity of 98.6% to a concentration of 48% was warmed to a temperature of 45 ° C., the temperature of the wind was set to 30 ° C., and the liquid application and drying operations were performed 52 times. Other than repeating, 397.5 g of sugar-coated semi-finished product was obtained in the same manner as in Example-1.
[0049]
Next, it was dried in the same manner as in Example 1 to obtain 391.1 g of a product (Example Product-2), which had a mellow and elegant sweetness, a smooth surface, and chewing It had a pleasant crispy texture, and the trehalose purity of the sugar-coated portion was confirmed to be 98.6%.
[0050]
[Example-3]
[0051]
The temperature of the gum center was set to 30 ° C., and an aqueous solution prepared with trehalose having a purity of 99.0% to a concentration of 50% was heated to a temperature of 50 ° C., the temperature of the wind was set to 40 ° C., and the liquid application and drying operations were performed 45 times. Except that the procedure was repeated, 394.1 g of a sugar-coated semi-finished product was obtained in the same manner as in Example-1.
[0052]
Next, it was dried in the same manner as in Example 1 to obtain 388.7 g of a product (Example Product-3), which had a mellow, elegant sweetness, a smooth surface, and chewing It had a pleasant crispy texture, and the trehalose purity of the sugar-coated portion was confirmed to be 99.0%.
[0053]
[Comparative example]
[0054]
[Comparative Example-1]
[0055]
Other than using trehalose syrup having a purity of 91.1%, sugar coating was attempted in the same manner as in Example 1, but the sugar coating surface became sticky and the gum centers adhered to each other. The sugar coating could not be formed at the gum center.
[0056]
[Comparative Example-2]
[0057]
A sugar coating was tried in the same manner as in Example 2 except that the concentration of trehalose syrup was 65% and the temperature was 70 ° C. However, the sugar coating surface was extremely uneven, and a smooth and uniform sugar coating was obtained. Could not be formed.
[0058]
【The invention's effect】
[0059]
As described above, by carrying out the present invention, it is possible to obtain a good sugar-coated solid that is stable even in a high humidity atmosphere and has no unevenness on the surface.
[0060]
In addition, the resulting sugar-coated solid can be formulated as a food, and since the film portion is formed from crystalline trehalose, the sweetness is as low as about 45% of sugar, and trehalose has a pH due to microorganisms in the mouth. The decrease is very slight and does not cause tooth decay, and since the film portion is crystalline, excellent effects such as a crispy and crisp texture are obtained.

Claims (2)

By contacting trehalose syrup having a trehalose purity of not less than 98% by weight, a concentration of 45 to 60% by weight and a temperature of 30 to 60 ° C. with a core adjusted to a temperature of 20 to 50 ° C. A sugar-coated solid material , wherein the sugar-coated portion contains trehalose having a purity of 95% by weight or more and has a smooth surface. Trehalose syrup having a trehalose purity of not less than 98% by weight, a concentration of 45 to 60% by weight and a temperature of 30 to 60 ° C. in a solid substance is brought into contact with a core agent adjusted to a temperature of 20 to 50 ° C. A method for producing a sugar-coated solid product, wherein the sugar-coated portion contains trehalose having a purity of 95% by weight or more and has a smooth crystalline surface.