JPS6016220B2 - Dried young cloth products - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention has the same deliciousness as ordinary salted young cloth, and can be used for instant food or at home in an extremely short time by simply pouring boiling water without the hassle of washing or cutting. The invention relates to dried young cloth products that can be used for.

In recent years, dried young cloth products have been commercially available that are finely cut and dried and can be used as they are for household use.
Finely cut dried young cloth products have come to be widely used as ingredients for instant foods, especially instant miso soup.

The characteristics of these young cloth products are that compared to the salted young cloth sold on the market that is cut after washing with water, the shape is smaller and the color is slightly faded when rehydrated. What is especially fatal for instant food use is that it takes a long time to recover when boiling water is poured into it. For example, if you pour boiling water into instant miso soup, the miso dissolves relatively quickly, but dried wakafu takes 3 to 5 minutes to reconstitute, and sometimes even after you've finished eating the miso soup, the miso remains incompletely reconstituted, causing the miso to dissolve in the bowl. Some items can be seen sinking to the bottom. The product of the present invention has improved these drawbacks, and although it has a compact shape after drying, it recovers significantly when restored, the green color of the young cloth itself stands out, and the restoration time is 20 to 20 minutes.
It was restored in an extremely short period of time (3 Tochisho).

Methods for drying young cloth include freeze-vacuum drying, solar drying, and hot air drying, but freeze-vacuum drying has the disadvantage that the drying cost is considerably high, and the product is expensive and cannot be made compact.

Therefore, the current methods of manufacturing dried young cloth products include either sun drying or hot air drying. However, when drying in the sun, the raw material of the young cloth turns brown as a result of being exposed to direct sunlight, which is not desirable in terms of quality. Therefore, there is a method of partially drying in the sun and then drying the cut pieces with hot air, but even with this method, browning is basically unavoidable. On the other hand, when hot air drying is used, there is no need to worry about browning, and the finished product is compact and becomes a large-sized young cloth when restored. However, products made using this method take as little as 2 minutes to restore once boiling water is poured into them, while products that take longer can take as long as 5 minutes, and if the product is of poor quality, it may not open to its original state no matter how many minutes it is left out. There is also.
Originally, young cloth is a natural product whose main component is carbohydrates, especially alginic acid, and when drying it, it is desirable to avoid denaturation by heat as much as possible. In this sense, drying temperature, drying time, amount of air flow, etc. become issues, and it would be desirable to dry with air alone if possible at the lowest possible temperature and in a short time, but this is not possible for industrial scale production. On the other hand, if desalinated salted young cloth is left as it is, alginic acid will be released to the surface due to the self-destruction action of the young cloth, causing the young cloth leaves to weld to each other and impairing the restorability. From this point of view as well, it is desirable that the drying time be as short as possible. However, the young cloth product of the present invention is produced by partially dehydrating the young cloth which has been thoroughly drained using a centrifugal separation method as a preliminary step to hot air drying, and then leaving it as is or leaving it naturally to scatter the ethyl alcohol. This is a product obtained by putting it in a rotary dryer and drying it with hot air for a short time. The effect of soaking in ethyl alcohol is that the moisture in the young cloth tissue is instantly transferred to ethyl alcohol, suppressing the self-destruction of the young cloth after washing and draining, and preventing the welding of young cloth leaves together. can give. As a result, the water content is approximately 75%
% young cloth has a moisture content of about 55%, and the time required for hot air drying is about half that of the conventional method, thus significantly improving production efficiency. Furthermore, due to the rapid dehydration of young cloth through ethyl alcohol treatment, its structure becomes porous and its water absorbency becomes very good, so that the restoration speed is significantly higher than that of conventional products. In addition, the restored young cloth absorbs more water than conventional products, so its weight is approximately 1.
The sound of the needle is muffled. Due to the extremely high restoration speed,
A product obtained by processing and drying a young cloth cut to a larger size than conventional products according to the present invention can be rolled up and restored in a very short time. Next, examples of the present invention will be shown.

Example 1 Salted young cloth was washed with water, drained, cut into 2 square pieces, soaked in ethyl alcohol solutions of various concentrations for different soaking times, and dried in a rotary hot air dryer at 60 qo for 5 minutes. After drying, a dry young cloth product was obtained.

A restoration test was performed on this product using a hot saline solution with a concentration of 1.3% (an aqueous solution with the same salt concentration as when drinking miso soup), and the elapsed time and restoration ratio were examined, and the results shown in Table 11 were obtained. The control was not treated with ethyl alcohol, and the values are expressed as a percentage of the young cloth (number of cut pieces) restored at each elapsed time to the total young cloth (number of cut pieces). Table 1: Relationship between various ethyl alcohol concentrations and processing time and recovery properties As is clear from Table 1, when the ethyl alcohol immersion time was 3 or more, the ethyl alcohol concentration was 50%.
The above items were completely restored between the 2nd and 3rd rows, and their superiority is remarkable compared to the control item, which is barely restored.

Example 2: Salted young cloth washed with water and then dehydrated by centrifugation 3
Cut 3.5 kg (moisture 75.8%) into 2 square pieces, and prepare an ethyl alcohol solution for food additives, which was adjusted to have an ethyl alcohol concentration of 50% and a salt concentration of 15%. 17.2 kg of young cloth (moisture 54.2%) obtained by soaking and dehydrating again by centrifugation was placed in a rotary hot air dryer and dried with hot air for 45 minutes at a temperature of 60°C, resulting in a moisture content of 11.5%.
A dry young cloth product of 8.3k9 was obtained.

Note that the salt is only added so that the salt concentration of the dried miso soup product containing the dried young cloth product of the present invention is appropriate. Example 3 135 kg of salted young cloth was washed with water and then dehydrated by centrifugation. 92K9 (moisture 72.8%) was cut into 2 square pieces, and the ethyl alcohol concentration was 80% and the sodium carbonate concentration was 0.01%. The ethyl alcohol solution for food additives was prepared by soaking 36 to 5 liters of ethyl alcohol solution in sand, and then dehydrating it again by centrifugation.
%) was placed in a rotary hot air dryer and dried at a temperature of 60° C. for a period of time to obtain a dried young cloth product 233k9 with a moisture content of 9.6%.

The purpose of adding sodium carbonate is to improve the texture of the dried young cloth product by softening it when it is used for reconstitution (a conventional method of using alkali for various food products). Example 4 Ethyl alcohol for food additives, prepared by washing salted young cloth 135k9 with water and then dehydrating it by centrifugation, 89k9 (71.6% water) to have an ethyl alcohol concentration of 5% and a salt concentration of 7%. Soak in solution 100〆 for 20 minutes,
This product (67.1k9) (moisture 63.6%) was dehydrated again by centrifugation, left overnight, cut into 2 angles of elevation, and dried in a rotary hot air dryer at 60 qo for 85 minutes, resulting in a moisture content of 8.6%. A dry young cloth product of 26.1k9 was obtained.

Next, a comparative example will be shown in which the products of these Examples and conventional products are compared.

Comparative Example 1 In order to compare the dried young fabric products of the present invention according to Examples 2 to 4 above with the dried young fabric products produced by the conventional hot air drying method, each drying equivalent of 0.5 minutes was heated at a concentration of 1.3%. It was restored using saline water and hot water, and the amount of water absorbed by each 3M sand immersion groove was measured.

The results are shown in Table-2. Table 2: Differences in degree of swelling (expressed as water absorption amount) over time of soaking After sanding in step 3, the water absorption amount is 1.1 times to 1.51 times, and when restored with hot water, the water absorption amount is 1.18 times to 1.53 times.

From this, it can be inferred that the young leaflet tissue in the present invention becomes porous due to the dehydration effect of ethyl alcohol, has high swelling properties, and has good recovery. Comparative Example 2 The dried young cloth products of the present invention according to Examples 2 to 4 above and the dried young cloth products produced by the conventional hot air drying method were combined for 0.5 minutes with powdered miso [“Inaka Koji Miso” (trade name) (Ichibiki). (manufactured by KK) was quickly frozen and vacuum-dried and then pulverized] It was reconstituted in boiling water at 160 °C for 10 days, and tasted after 4 minutes to conduct a sensory test (1).

A panel of 30 people compared the product with a control (conventional product) and evaluated each color and volume. Table 3: Sensory test results for dried young cloth productsQuestion:Which one has the better natural green color? Question: Which one has more volume K? As shown in the table above, the significance level for the color of restored young cloth is 1% to 5%.
It was found that the products of the present invention of Examples 2 to 4 were superior in the original green color of young cloth compared to the conventional products.

This is thought to be because the brown parts were slightly removed due to the decolorizing effect of ethyl alcohol. Regarding the sense of volume, it was found that the products of the present invention of Examples 2 to 4 had a greater appearance than the conventional products at a significance level of 1% to 0.1%.

This fact provides a significant advantage in terms of manufacturing costs. As recognized in the above Examples and Comparative Examples, it is relatively easy to produce dried young cloth products that have extremely good restoring properties and a water absorption amount as high as about 1.3 times compared to conventional products. The present invention has made it possible to manufacture the following.

Claims (1)

[Claims] 1. A dried young cloth product that has an extremely large volume when restored, has an excellent color unique to young cloth, and has excellent restorability, and is characterized in that the raw young cloth is soaked in ethyl alcohol and then dried.