JPS59175868A - Preparation of laver sheet - Google Patents

Abstract

PURPOSE:To elongate the storage life of raw laver, and to improve the quality of the laver sheet product remarkably, by stirring the raw laver in chilled seawater stream during the stage from the landing of the harvested raw laver from a laver boat to the step of washing the laver with seawater. CONSTITUTION:Raw laver transported by a laver boat is washed with seawater, minced, aged, and formed to a laver sheet to obtain the product. In the above laver-preparation process, the raw laver is cooled and aged during the stage from the landing of the laver to the washing with seawater, by passing chilled seawater through the raw laver. The storage life of the raw laver can be elongated and the product quality can be remarkably improved by this process. Furthermore, the process enables the improvement in the harvesting efficiency of the raw laver, the operation efficiency of the production plant, the uniformization of the product quality, etc.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an improvement in a method for producing seaweed, and in particular, by improving a method for storing raw seaweed that has been transported to a seaweed production plant on land (by a seaweed ship, etc.), it is possible to improve the production of seaweed products. This invention relates to a seaweed manufacturing method that enables improved quality and improved workability in seaweed manufacturing plants.

In general, seaweed is produced by a process as shown in FIG. That is, in the process A of collecting seaweed raw algae, a seaweed boat leaves the port at around 2:00 to 3:00 a.m., collects raw seaweed from the seaweed net that corresponds to the daily processing amount of the seaweed manufacturing plant, and collects seaweed from the seaweed net. The raw seaweed algae is transported to the seaweed production plant in a mixed state.

The seaweed raw algae 1 mixed with seawater is pumped up from a seaweed boat by an appropriate method such as a pump, and is temporarily stored in a tank 2, and is sequentially sent to the seaweed cleaning step B by a pump 3 or the like. In the cleaning step B, the mixture 1 of seaweed and seawater is washed with seawater W to remove impurities such as diatoms attached to the seaweed. Washed seaweed algae 1'
After the seawater is drained in the draining process C, the seaweed is sent to the mincing process, where the fibers of the seaweed are cut to a certain size. After cutting, raw algae 1'' is ripened for a certain period of time by adding fresh water O' in the thermal process E, and then in the concentration adjustment process F, fresh water O is added to adjust the concentration to a concentration suitable for nori straining. After passing through a straining process G, a drying process (1), and a peeling process I, it is taken out as a seaweed product 4.

However, there are still various problems that need to be solved with the conventional seaweed production methods. For example, the temperature of a mixture 1 of raw seaweed and seawater transported by a seaweed ship increases over time, and its quality deteriorates. Temperature again
Even if mixture 1 is stored in a refrigerator or the like in order to prevent seaweed from heating up, if the storage time exceeds 10 hours, the product nori 4 will inevitably lose its characteristic seaweed aroma and luster. As a result, the amount of seaweed that can be collected is limited by the processing capacity of the plant, and it is not possible to collect a large amount of seaweed at once, making the collection of seaweed and the operation of seaweed boats extremely difficult. There is a problem with it being bad.

In addition, in order to avoid deterioration in the quality of seaweed products as much as possible, the seaweed manufacturing plant must be operated from early in the morning and the harvested seaweed and seaweed raw algae must be processed as early as possible, but it is necessary to secure workers, etc. There are various problems in this regard.

Furthermore, even if the products are produced on the same day, due to the storage time of the nori raw algae, the quality I7. (Fragrance, gloss) There is a problem that there is a big difference.

The present invention aims to solve the above-mentioned problems in conventional seaweed production, and simply stores seaweed raw algae 1 in a mixed state with seawater transported to a plant by a seaweed boat in a storage tank 2. In addition, by circulating an appropriate amount of cold seawater into the seawater during storage and stirring to cool the seaweed and perform preliminary ripening, the storage time of the seaweed can be extended and The object of the present invention is to provide a method for producing seaweed that enables a significant improvement in product quality.

The present invention provides a method for transporting raw seaweed algae (from a seaweed boat) to a washing process using seawater during seaweed production after harvesting, while flowing cold seawater into the raw seaweed seaweed. The basic structure is to stir and cool, as well as to age and store at zero temperature.

In addition, by adopting the above configuration, it is possible to significantly extend the storage time of raw seaweed algae, improve product quality, and further improve the collection efficiency of raw seaweed and the operating efficiency of the manufacturing plant. This makes it possible to improve the quality of products and equalize product quality.

Hereinafter, details will be explained based on an embodiment of the present invention shown in FIGS. 2 to 5.

Figure 2 shows the production process of seaweed according to the present invention, and Figures 3 to 5 show the process of cooling and aging and storing seaweed raw algae.
This shows the equipment used.

Referring to FIG. 2, in the seaweed alga collection step A, the seaweed algae 1 collected from the seaweed net by a seaweed boat etc. is as follows:
It is brought ashore by a pump or the like and transferred to the cooling/ripening device 5 of the cooling/ripening/storage process P. The cooling/ripening device 5
As shown in FIGS. 3 to 5, there is a storage tank main body 9 made of FRP equipped with a stirring blade 6, a cold seawater feed lower, a seaweed algae outlet 8, etc., a stirring blade driving motor 10, and a transmission. 11, an air supply compressor 12, and other components.

Vertically long baffle plates 13 having a triangular cross section are attached to the inner wall surface of the storage tank main body 9 at two locations, thereby preventing rotational slippage of the stored material S during stirring.

Further, a seawater discharge port 14 and an overflow discharge port 15 are provided in the tank side wall facing the cold seawater feed lower, respectively.

Reference numeral 16 denotes a vertically long partition plate disposed in front of both the discharge ports 14 and 15 at an appropriate distance from the side wall of the tank.
6 forms a drainage section 17 for cold seawater W. An upper filter 18 and a lower filter 19 made of stainless steel punched metal are installed above and below the partition plate 16, respectively, and the filters 18.1
The cold seawater W mixed into the stored material S from the inlet lower through the inlet 9 is discharged into the drainage section 17 and then discharged to the outside from the discharge port 14. In addition, both the above filters 1.8 and 19
The mesh size of the seaweed in the storage area S is
7. Size that does not leak into the interior, for example, a diameter of 0°5 to 1.5 m.
It has been selected as Q rank.

Reference numeral 20 denotes a scraping blade provided on the stored material side of the lower filter 19, and the blade 2 is driven by a waterproof drive motor 22 installed in the drainage compartment 17 via a support member 21'.
By rotating the lower filter 19, the laver algae stuck to the mesh of the lower filter 19 is scraped off to prevent the screen from clogging.

Reference numeral 21 denotes an air injection nozzle fixed to the bottom of the tank body 9, which blows fresh air from the compressor 12 into the stored material to promote the respiration of the seaweed algae.

In FIGS. 3 to 5, 22' and 23 are control valves, 24 is a liquid level relay, 25 is a liquid level confirmation window, and 26 is a support frame.

When a predetermined amount of the mixture of seaweed raw algae 1 and seawater is carried into the tank body 9, the mixture S is cooled I7 by rotating the stirring blade 6 while continuously supplying cold seawater W from the feeding lower. The supply and discharge amounts of cold seawater W are controlled by control valves 23 and 24 so that its temperature does not exceed approximately 10°C, and by stirring blades 6.
The rotational speed of each is automatically controlled by a drive motor 1o.

Note that the rotational speed of the stirring blade 6 is normally controlled at 8 to 3QRPM, but in the case of laver algae with thick mesophylls collected around March to April, the rotational speed may be increased to about 30 to 4QRPM. The aging effect is promoted as described below. Further, the rotational direction of the stirring blade 6 is controlled so that the rotational direction is changed at a constant pitch, and is usually switched in a cycle such as clockwise rotation for 3 minutes → stop for 10 to 20 seconds → counterclockwise rotation for 3 minutes. being driven. This is because switching rotation improves the cleaning effect of seaweed algae.

The cold seawater W sent from the inlet lower flows through the storage S and then is discharged into the drainage section 17 through the meshes of the upper and lower filters 1.8 and 19, and the amount of cold seawater W sent in is equal to the amount of cold seawater sent in. Seawater is discharged to the outside through the control valve 22'. In addition, when the storage time is particularly long (15 to 20 hours or more), the air from the compressor 12 is discharged from the air injection nozzle 2I to promote the respiration of the seaweed algae. Further, the seaweed algae contained in the mixture S adheres to the mesh of the lower filter 19 along with the advection of seawater, but it is successively scraped off by the scraping blades 20 and does not cause clogging. Not at all.

The seaweed raw algae 1 stored in the cooling/ripening device 5 in a series of conditions as shown in FIG. It goes through the process of becoming a product. That is, the raw algae 1 transferred by the pump 3 is washed with seawater W in a seaweed washing machine (not shown) λ11, and after removing attached diatoms, the seawater is drained in a draining step C, and then the mincing step is carried out. The fibers of the washed seaweed 11 are cut into a certain size.

The cut seaweed raw algae 1' is subjected to a ripening process E by adding fresh water O.
After being aged for a certain period of time, it is sent to concentration adjustment step F.
Fresh water O is further added to adjust the concentration of the strained raw material to be suitable for straining nori. The raw material whose concentration has been adjusted with fresh water is successively strained onto a screen in the next seaweed making process G, and sent to the drying process G, where it is dried with hot air. The dried seaweed is removed from the bamboo shoots in the peeling process (2), and then sent through the packaging process. Further, the screen from which the seaweed has been peeled is washed with fresh water in a screen washing step, and then returned to the seaweed manufacturing step G. Incidentally, each process such as straining, drying, peeling, packaging, and washing of the seaweed is usually carried out continuously using a so-called automatic seaweed manufacturing machine.

In accordance with the above-mentioned method, the present invention is configured to cool and mature seaweed algae brought ashore from a seaweed boat, etc. by stirring 17 while circulating cold seawater while transferring them to a seawater cleaning process after landing. Therefore, it can have many excellent effects as described below.

(1) Because cold seawater is circulated and stirred, the seaweed algae are stored under almost the same conditions as in seawater in terms of temperature, salinity, attached microorganisms, etc. Because it is kept at a low temperature of around 0°C, it does not rot or deteriorate even after about 20 hours have passed after landing. As a result, even if the raw seaweed is stored for about 20 hours, the seaweed products manufactured using it have almost the same aroma and gloss as products made using raw seaweed immediately after harvesting. As a result, product quality does not deteriorate at all as the storage time elapses, unlike in the past.

(2) In addition, since the cold seawater is circulated and stirred, the seaweed raw algae are ripened and washed while being stored, and as a result, the fresh water before the next washing process B and the seaweed production process G is The processing time of the aging process E can be shortened, the gloss of the product is improved, and furthermore, the small pores that occur in the seaweed are reduced and so-called "back muffler" of the seaweed is prevented.

(3) Furthermore, since seaweed raw algae can be stored for a long time, it is possible to collect a large amount of raw seaweed at once, and the operating time of the seaweed production plant is independent of raw algae collection process A. can be determined. As a result, the operating efficiency of seaweed boats and the like can be greatly improved, and various problems associated with early morning work can be solved all at once.

Furthermore, in conventional plants, only the amount of raw algae that can be processed in one day is collected beforehand, which often results in plant shutdowns due to running out of raw algae. However, in the method of the present invention, there is no such risk at all, and the operating efficiency of the plant is greatly improved.

As mentioned above, the present invention has excellent practical utility.

[Brief explanation of drawings]

FIG. 1 is a process outline diagram of a conventional seaweed manufacturing method. FIG. 2 is a process outline diagram of the seaweed manufacturing method according to the present invention. FIG. 3 is a plan view of the cooling/ripening apparatus used in the cooling/ripening storage process, FIG. 4 is a cross-sectional view of FIG. 3 as viewed from E, and FIG. 5 is a cross-sectional view of FIG. A Collection process P Cooling/ripening storage process B Washing process with seawater C Draining process, quenching process E Aging process with fresh water F Concentration adjustment process G Nori process H Drying process 1 Raw seaweed 5 Cooling/ripening device 6 Stirring blade 7 Cold seawater Inlet port 8 Raw algae outlet 9 Storage tank body 14 Seawater outlet W Cold seawater

Claims (1)

[Claims] Seaweed raw algae (1) transported by a seaweed boat is processed through a washing process σ3) with seawater, a mincing process p), a ripening process (El, a seaweed straining process (F), etc.), and is made into a product. In the production method, cold seawater (W) is poured into the seaweed seaweed (1) brought ashore from a seaweed ship until it is transferred to the seawater washing process after being brought ashore. A method for producing seaweed, characterized by distributing it, stirring it, and storing it for cooling and ripening.