JP3403471B2 - Castella containing micronized cellulose material - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a dietary fiber-containing castella. For more details,
There is little volume loss after firing, and even after long-term storage,
About castella with excellent color tone and shape. 2. Description of the Related Art Castella is a baked confectionery which has eggs, sugar and flour as main raw materials and has a specific elasticity. After the normal castella is baked, the air bubbles below the castella are crushed with the passage of time, and the volume of the castella is reduced. As a result, the grain of the castella becomes non-uniform, and at the same time, a difference in color tone occurs between the upper and lower portions, which is not preferable in appearance. [0003] It is known that adding a swelling agent or reducing the amount of sugar is effective in suppressing the decrease in volume after baking. However, these methods have the problem that the texture deteriorates. Newly arises. Further, if the castella is stored for a long period of time together with a preservative such as an oxygen scavenger, there is a problem in that dryness, poor texture, change in color tone, and the like occur upon eating. SUMMARY OF THE INVENTION [0004] The present invention uses a finely divided cellulose-based material to reduce the volume reduction after baking compared to conventional castella, to have a good texture, and to be preserved for a long period of time. The purpose is to supply castella whose texture and color tone do not change. The inventors of the present invention have made intensive studies to solve the above problems, and as a result, by mixing an effective amount of a compounded material with an effective amount of a finely divided cellulosic material, The volume reduction after firing of the obtained castella is small,
The inventor found that the texture was excellent, and that the texture, color tone, and shape did not change even after long-term storage, and thus the present invention was completed. That is, the present invention relates to a method for producing a finely divided cellulose-based material, wherein the particle size of 50% of the integrated volume is 0.3 to 6 μm, and the ratio of the integrated volume of particles of 3 μm or less is 25% or more. A castella containing a micronized cellulose-based material, characterized by containing 0.1 to 20 parts by weight of the castella. A feature of the present invention is that the addition of a cellulose-based material suppresses the volume loss after firing and also provides an excellent texture. That is, it is possible to produce a castella that does not cause a change in texture and color tone. [0007] The finely divided cellulose-based material used in the castella containing the finely divided cellulose-based material of the present invention is one in which cellulose has been reduced to a fine particle which has not been reached conventionally. Cellulosic materials include, for example, wood pulp,
The term refers to purified linter, natural cellulose after delignification of cotton fiber, hemp fiber, or the like, regenerated cellulose solidified and regenerated from a viscose solution or a copper ammonia solution, and cellulose obtained by washing alkali cellulose with water. The particle size of the micronized cellulosic material used in the present invention is such that the particle size of 50% of the integrated volume is 0.3 to 6 μm and the ratio of the integrated volume of particles of 3 μm or less is 25%.
That is essential. When the cumulative volume ratio of particles having a cumulative volume of 50% of 6 μm or more or 3 μm or less is less than 25%, the smooth creamy feeling of the aqueous suspension of the micronized cellulosic material is lost, and the texture is rough when eaten. Occurs. A suspension having a particle size of less than 0.3 μm is very difficult to produce. Preferably 0.5
４4 μm. The particle size of the micronized cellulosic material used in the present invention is measured by a laser diffraction type particle size distribution analyzer as described below, and is defined as follows. The particle diameter indicated by the laser diffraction type particle size distribution measuring device means the diameter of a sphere having the same volume as the particle. Each of the particles is not the same size and has a so-called particle size distribution, which is always represented as a function with a certain distribution. In order to simply represent the particle size of the particle group having this distribution, the present invention uses two types of expressions, that is, the particle diameter of the cumulative volume of 50% and the cumulative volume ratio of the particles of 3 μm or less. Here, the particle diameter of 50% of the integrated volume means the particle diameter on the horizontal axis and the integrated volume on the vertical axis as shown in FIG. Mean particle size. That is, the total volume of particles larger than this particle size (equivalent to the total weight if the density of all particles is the same) is equal to the total volume of particles smaller than this particle size. The particle diameter of 50% of the integrated volume is generally called a volume-based median diameter, and is widely used as a general means for expressing the particle size. Here, the cumulative volume ratio (%) of the particles of 3 μm or less is the cumulative volume ratio at 3 μm on the particle size distribution function curve, that is, 3 μm.
In the following, the ratio of the total volume of the particles (corresponding to the total weight if the density of all the particles is the same) will be referred to. The micronized cellulose-based material used in the present invention is characterized by its size and distribution, but its shape is not spherical, and the ratio of major axis to minor axis, L / D is 1.1 to 15 And L / D of many of them is 5-10. In the castella of the present invention, the ratio of the micronized cellulosic material is 0.1 to 20 parts by weight, preferably 1 to 100 parts by weight of the total flour.
0 to 10 parts by weight. When the compounding ratio is less than 0.1 part by weight, suppression of volume reduction after firing, which is a feature of the present invention, improvement of texture and the like do not appear, while when the compounding ratio exceeds 20 parts by weight, The castella flavor and texture cannot be maintained. Hereinafter, a method for producing a castella according to the present invention will be described. First, the atomized cellulosic material used in the present invention is, for example, a depolymerization treatment is performed on the cellulosic material as a pretreatment step, and subsequently, a medium is contained in a container, and a rotor is provided for forcibly stirring the medium. It is obtained as a suspension by wet pulverization in a container. Here, the depolymerization treatment refers to, for example, one or a combination of two or more of acid hydrolysis, alkali oxidative decomposition, enzymatic decomposition, steam explosion decomposition, and steam cooking. As a result of the depolymerization, the degree of polymerization of the cellulosic material is preferably set to 300 or less. Generally, a medium stirring wet grinding apparatus (commonly called a bead mill or an annular type mill) is a device that incorporates a medium in a container and performs wet grinding in a container provided with a rotary blade for forcibly stirring the medium. ,ink,
It is generally used for atomizing inorganic materials such as ceramics, but when applied to cellulosic materials where atomization is difficult, an extremely high atomizing effect can be obtained. The aqueous suspension of the micronized cellulosic material thus obtained has a high degree of stability and structural viscosity as a solid having a high affinity for water, ie, as a colloid of cellulose particles. The castella containing the micronized cellulosic material of the present invention can be produced by adding an aqueous suspension of the micronized cellulosic material to other compounding materials. The micronized cellulose-based material used in the present invention can be added in the form of a dried product, but preferably, it is added as a water suspension to enhance the dispersibility in the compounding material. It is possible to obtain a castella with less roughness. There is no need to pay special attention to how to mix the aqueous suspension of the micronized cellulose-based material with other compounding materials, and the mixture can be easily mixed at room temperature. Next, a method for measuring the finely divided cellulose-based material used in the present invention will be described. Specifically, the particle size of the micronized cellulose material is measured by using a Shimadzu laser diffraction particle size distribution analyzer (SALD-1100) to make the suspension to be used for measurement 0.1% by weight with distilled water. Using a household mixer (trade name: Sanyo Mixer Model SM-G471, manufactured by Sanyo Electric Co., Ltd.), set the switch of the knife cutter to "juice", stirred for 1 minute, and then transmitted ultrasonic wave built into the device. The measurement is performed in a state where the secondary aggregation is broken by a machine. A sample diluted evenly with pure water to 0.1% by weight is measured using a flow cell, but the built-in ultrasonic transmitter is always on and the ultrasonic wave is applied for at least 1 minute to aggregate. The measurement is performed after the prevention. When measuring with this particle size distribution measuring device, the measuring range is set to 0.1 to 45 μm.
As a result, calculation is performed using the relation between the confusion light intensity and the particle diameter derived from the Mie confusion theory formula (incorporated in the measuring device). In addition, the refractive index is to be selected for the standard refractive index of 1.7-0.2i,
As a calculation method for obtaining the particle size distribution, a direct calculation method using a least squares theory is used. The number of measurements for one sample is specified to be seven, and the measurement interval is two seconds. The present invention will be described below in more detail with reference to examples. The measurement of the height of the castella and the sensory evaluation were performed as follows. The height of the castella was removed from the baking mold after firing, and the height after standing for 1 hour was measured with a ruler. The sensory evaluation was carried out by a two-point comparison method with a standard castella without the addition of a finely divided cellulose-based material. Eight panelists compared the castella containing the micronized cellulose material with the standard castella, and found that the texture after firing and the shape, color, and texture after standing for 2 weeks were very good (◎), Four-stage evaluation of good (段 階), slightly poor (△), and poor (×) was performed. Example 1 and Comparative Example 1 (Production of Atomized Cellulose-Based Material) Wood pulp (L-DKP) sheet having a degree of polymerization of 1000 was cut into 3 mm × 7 mm, and 2% in 3 kg. 6 kg of the sulfuric acid solution was uniformly mixed. Next, this was put into a pressure cooker and 2 kg / cm ² G
At 50 ° C. for 50 minutes. After the treatment, washing was carried out thoroughly with water until the washing liquid became neutral, acid content was washed away, and then a water slurry was adjusted so that the suspension concentration became 12.5% by weight. After pre-dispersing this water slurry with a homomixer, the inner volume was 5 liters, and the medium filling rate was 85.
% Pulverization was performed with a medium stirring wet-type pulverizing apparatus (PARMILL (registered trademark) RL-5 type, manufactured by Ashizawa Co., Ltd.). As the medium, spherical alumina beads having a diameter of 2 mm were used. The number of revolutions of the stirring blade was 2725 rpm, and the particles were passed five times at a passage speed of 2 minutes, and the particles having a cumulative volume of 50% had a particle diameter of 0.7 μm and the particles having a cumulative volume of 3 μm or less had a cumulative volume ratio of 84%. An aqueous suspension containing a cellulosic material was obtained. (Production of castella) As Example 1, the following ingredients were mixed in parts by weight per 100 g of flour to prepare a castella according to the following procedure. Micronized cellulosic material 3.2 (parts by weight) Flour 100.0 Eggs 258.3 Sugar 204.2 Sugar syrup 41.7 Honey 16.7 Water 39.5 (1) First, 3100 g of eggs and cumulative volume of particles 50 %
306 g of an aqueous suspension containing 12.5% by weight of a micronized cellulose-based material having an integrated volume ratio of 84% of particles having a particle diameter of 0.7 μm and 3 μm or less was well mixed. (2) Next, 2450 g of sugar, 500 g of starch syrup, 200 g of honey and 200 g of water were added to (1), mixed well, and finally 1200 g of flour was added quickly. (3) Pour the dough obtained in (2) into a baking mold,
Bake for about 60 minutes at ° C. As Comparative Example 1, the remaining materials except for the finely divided cellulose-based material in the composition of Example 1 were mixed,
Made a standard castella. The method of making was the same as in Example 1. After removing the castella from the baking mold, the height was measured one hour later, and the sensory evaluation was performed on the texture after baking and the shape, color, and texture after standing for two weeks. Table 1 shows the results. [Table 1] From the results shown in Table 1, it can be seen that the addition of the finely divided cellulose-based material makes it possible to produce a castella having a small volume decrease after baking, excellent texture, and excellent texture, color tone and shape after long-term storage. Understand. The castella containing the micronized cellulose material of the present invention has a smaller volume loss after firing, an excellent texture, and an excellent long-term storage property, as compared with conventional ones. is there.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a graph showing a relationship between a particle diameter and an integrated volume of an example of a micronized cellulose material used in the present invention.

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Claims (1)

(57) [Claims 1] A particle diameter of 50% of an integrated volume is 0.3 to 6 μm.
And the integrated volume ratio of particles having a particle size of 3 μm or less is 25%.
A castella containing a micronized cellulose material, wherein the micronized cellulose material is contained in an amount of 0.1 to 20 parts by weight based on the total flour.