JPH05336932A - Swallow's nest-like food and its production - Google Patents

Abstract

PURPOSE:To inexpensively obtain a thread-like subject food having properties and shape similar to natural swallow's nest and excellent in heat resistance by using an elution ingredient of an agar-containing seaweed and elution ingredient of alginic acid-containing seaweed as main ingredients. CONSTITUTION:For example, an agar-containing seaweed and alginic acidcontaining seaweed are each immersed in a large number of low- concentration aqueous solution of sulfuric acid and then washed with water and the agar-containing seaweed is mixed with the alginic acid-containing seaweed in a ratio of (55:15) to (45:25). 4-4.6 pts.wt. sodium carbonate and 2100-3600 pts.wt. water are added to 100 pts.wt. of the mixture and the mixture is heated at >=100 deg.C and then the eluate is filtered and the filtrate is collected and cooled and the resultant solidified material is cut into thread-like material. Then the thread-like material is immersed into an aqueous solution of calcium chloride at a low concentration, washed with water and completely frozen and the frozen solidified material is thawed and dehydrated to provide the objective food.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a nest-like food having an appearance, texture and properties almost similar to those of a natural nest and a method for producing the same.

[0002]

2. Description of the Related Art Nestling, which is said to be a nest of swallows, is a type of southern swallow that is very expensive and is used as a material for high-grade Chinese soup. This swallow's nest is a dry substance composed of a light gray or pale yellow thread-like composition, and is said to be made almost entirely by swallow saliva. Further, the main component contained in the saliva of this swallow, that is, the main component of the swallow nest, is considered to be a component in the seaweed that swallow feeds.

In recent years, with the economic growth of our country, the consumption of the nests has gradually increased.

[0004]

However, since natural swallow nests cannot be produced by artificial cultivation or the like, and the amount of their collection is limited, the supply amount is short of the demand amount. . For this reason, it is considered that there is a demand for artificially manufactured, inexpensive, nest-like foods having an appearance and texture almost similar to those of natural nests.

[0005] In addition, natural nests are inferior in heat resistance, and when they are boiled for about 10 minutes, they almost dissolve and become gel-like and lose their shape. Therefore, they can be cooked at high temperature for a long time, canned foods, aluminum packaging bags, etc. There is a problem that it cannot be processed into a so-called retort food that is filled inside, cooked, heat-sterilized and stored.

The present invention has been made in view of the above problems, and has an appearance, a texture, and properties almost similar to those of natural swallows, and has higher heat resistance than natural swallows and is inexpensive. The present invention aims to provide a nest-like food that is produced in a similar manner and a method for producing the same.

[0007]

According to a first aspect of the present invention, a swallow-like food is a filamentous product containing an elution component of agar-containing seaweed and an elution component of alginic acid-containing seaweed as main components.

In the method for producing a nest-like food according to claim 2, a mixture of seaweed mainly containing agar-containing seaweed and alginic acid-containing seaweed is heated by adding sodium carbonate and a large amount of water, and the eluate is released. After cooling, the obtained coagulated product is cut into a thread shape, and the thread-shaped coagulated material is immersed in water containing calcium ions, washed with water, frozen, thawed and dehydrated.

[0009]

[Action] The swallow-like food according to claim 1 is a filamentous swallow-like food containing, as a main component, an elution component of agar-containing seaweed and an elution component of alginic acid-containing seaweed, which is almost the same as a natural swallow nest. It has the appearance, texture, and properties.

In the method for producing a nest-like food according to claim 2, since the seaweed mainly containing the agar-containing seaweed and the alginic acid-containing seaweed is extracted with hot water containing sodium carbonate, each seaweed is extracted. An eluate is obtained in which polysaccharides such as agar and alginic acid and salts thereof are extracted in a well-balanced manner.

The eluate is allowed to cool, the obtained coagulated product is cut into filaments, the filamentous coagulate obtained is immersed in water containing calcium ions, washed with water and frozen, By thawing and dehydrating, a nest-like food having an appearance, texture and properties almost similar to those of natural nests can be obtained. In addition, this nest-like food has better heat resistance than natural nests, does not dissolve in hot water even when cooked by boiling for about 10 to 30 minutes as a food material, and its shape is retained and retained. . It is considered that this is because the nest-like food obtained by soaking in water containing calcium ions and washing has a structure in which agar, alginic acid and salts thereof are tightly clathrated with each other.

[0012]

EXAMPLE An example of the nest-like food and the method for producing the same according to the present invention will be described below.

First of all, when the natural swallow nest was analyzed and examined,
From the results of the analysis, it was presumed that the main components of the natural nests were polysaccharides contained in seaweed such as agar, alginic acid or its salts, carrageenan or its salts. Therefore,
As a result of various studies on inexpensive raw materials having properties similar to those of natural swallows, the following raw materials were selected.

That is, although various seaweeds can be used as raw materials for the nest-like food of the present invention, one or more seaweed-containing algae such as agar beetle and alginic acid such as arame and kelp are used. One type or two or more types of contained seaweed are mainly used.

Next, an example of the method for producing the nest-like food of the present invention will be described.

First, the agar-containing seaweed is immersed in a large amount of a low-concentration aqueous sulfuric acid solution, and then washed with water. On the other hand, the alginic acid-containing seaweed is immersed in a large amount of a low-concentration aqueous sulfuric acid solution and then washed with water. The agar-containing seaweed or the alginic acid-containing seaweed is preferably cut into fine pieces if necessary before the dipping treatment.

Then, the washed agar-containing seaweed and the washed alginic acid-containing seaweed are sufficiently mixed at a ratio of 55:15 to 45:25 (dry weight ratio). Next, to 100 parts by weight (dry weight) of this mixture, 4 to 4.6 parts by weight of sodium carbonate and 2100 to 3600 parts by weight of water are added, and the temperature is 100 ° C. or higher, for example, about 2 hours or about 2 hours. If the temperature is 125 ° C, heat for about 30 minutes to extract agar, alginic acid and its salts. Here, sodium carbonate is added in order to increase the extraction rate of alginic acid and its salts from the alginate algae.

Next, the obtained eluate is filtered with a filter cloth to collect the filtrate.

Further, hot water and concentrated sulfuric acid are added to the unfiltered residue, and the mixture is sufficiently stirred for 1 to 2 minutes, squeezed and filtered to collect a filtrate. The operations of extraction from this residue and filtration through filtration are repeated 2-3 times to collect the filtrate. Note that the mixture 10
The total amount of boiling water is 1300-15 with respect to 0 parts by weight (dry weight).
The total amount of 00 parts by weight and concentrated sulfuric acid is preferably 0.6 to 0.7 parts by weight.

Then, the filtrate obtained from the seaweed mixture is mixed with the filtrate obtained from the residue, and the mixture is allowed to cool overnight and solidified.

Next, the solidified material is cut into a thread shape. The obtained thread-like coagulated product is immersed in water containing a low concentration of calcium ions, for example, an aqueous solution of low concentration calcium chloride, and then washed with water.

Then, the washed thread-like coagulated product is frozen, for example, at -20 ° C. When completely frozen, it is thawed and dehydrated to obtain a nest-like food. This nest-like food can be used as it is as a material for Chinese cuisine.

[0023] Further, this swallow-like food is dried with a ventilation dryer.
Drying at 50 ° C. or below gives a dry, nest-like food. This dried nest-like food can be reconstituted with water and used as a material for Chinese cuisine.

Both these nest-like foods (pre-dried foods and post-dried foods) are very similar in appearance to the color tone, shape, etc., and texture, and are also similar in composition to natural nests. ing. Further, this nest-like food has more excellent heat resistance than natural nests, and it does not dissolve in hot water even if it is boiled and cooked for about 10 to 30 minutes, and it can be retained without losing its shape.

The present invention will be described in detail below based on specific examples.

Example 1 First, 50 g of dried agar beetle was cut into about 5 cm, washed with water, and immersed overnight in 1 liter of 0.03% sulfuric acid aqueous solution,
Washed with water.

On the other hand, after washing 20 g of dried kelp cut into pieces of about 0.5 cm × about 0.5 cm with water, 0.3% sulfuric acid aqueous solution 100
It was immersed in milliliter for 1 hour and washed with water.

Then, the washed agar beetle and kelp were thoroughly mixed, 3 g of sodium carbonate and 2 liters of water were added to this mixture, and the mixture was heated at 125 ° C. for 30 minutes.

The obtained eluate was squeezed with a filter cloth, and the filtered solution was collected. As a result, a greenish transparent solution was obtained.

Next, 0.5 liters of hot water and concentrated sulfuric acid were added to the residue.
0.25 ml (0.44 g) was added, and the mixture was sufficiently stirred for 1 minute, filtered with a filter cloth to collect the filtrate. Further, 0.5 liters of boiling water was added to this residue, and the mixture was sufficiently stirred for 1 minute, filtered with a filter cloth to collect a filtrate.

When the filtrate from the seaweed mixture and the filtrate from the residue were put together and allowed to cool overnight, a solidified product was obtained. The total volume of filtrate was about 2.5 liters. Next, this coagulated product was cut into filaments, immersed in 1 liter of water in which 1.5% calcium chloride was dissolved for 5 hours, and washed with water. This was frozen at -20 ° C for about 15 hours overnight,
The filamentous coagulated product was completely frozen, then thawed and dehydrated to obtain a nest-like food.

This nest-like food has the same shape as the filamentous composition of the natural nest, except that it has water, and its color is light gray or light yellow and is similar to that of the natural nest. there were. Also, the texture of this nest-like food was very similar to that of natural nest.

Then, a part of this nest-like food is stored at 120 ° C.
After cooking for 30 minutes, it was found that it did not dissolve in hot water and could maintain a filamentous shape.

Next, a part of the thawed and dehydrated Yakuchi-like food was dried at 50 ° C. in a ventilation dryer. It was found that when the dried pork-like food was reconstituted with water and then cooked at 120 ° C. for 30 minutes, it did not dissolve in hot water and could maintain a filamentous shape. In addition, the texture of this dried nest-like food was very similar to that of natural nest.

[0035]

According to the invention as set forth in claim 1, the swallow-like food has properties similar to those of natural swallows, and the appearance and texture such as color and shape are very similar to those of natural swallows. Can be used as a material for Chinese cuisine.

According to the second aspect of the present invention, it has properties similar to those of a natural nest, and the appearance and texture such as color tone and shape are very similar to those of a natural nest, and the manufacturing process is simple. As a result, it is possible to inexpensively produce a nest-like food and use it as a material for Chinese cuisine. In addition, a nest-like food has higher heat resistance than a natural nest, and even if it is boiled and cooked for about 10 to 30 minutes, it does not dissolve in hot water and can be retained without losing its shape. Therefore, it can be used as a material for retort food such as canned food.

Claims (2)

[Claims] 1. A filamentous swallow-like food comprising, as a main component, an elution component of agar-containing seaweed and an elution component of alginic acid-containing seaweed. 2. A mixture of seaweed mainly containing agar-containing seaweed and alginate-containing seaweed is added with sodium carbonate and a large amount of water and heated, and the eluate is allowed to cool, and the obtained coagulated product is cut into filaments. A method for producing a nest-like food, comprising immersing the filamentous coagulated product in water containing calcium ions, washing with water, freezing, thawing and dehydrating.