JPH0884565A - Edible film-packed food and method and apparatus for producing the food - Google Patents

Abstract

PURPOSE: To obtain an edible film-packed food which is continuously producible by a simple treating process, and provide a process and an apparatus for producing the food. CONSTITUTION: This edible film-packed food is continuously produced as follows. A water-containing material A composed of a vegetable protein as a main raw material is heated, melted and kneaded by a screw-type extruder 1 and extruded from a circular extruding outlet 5a into a tubular form having a thin thickness. A food material B is poured into it and continuously treated in a processing process and with an apparatus having a simple structure to obtain the objective food.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an edible film-packaged food, a method for producing the same, and an apparatus for producing the same, and in particular, an edible film containing protein as a main component is extruded into a tubular shape while a food material is contained therein. The present invention relates to a novel improvement for continuously producing an edible film packaged food by injecting edible water.

[0002]

2. Description of the Related Art Sausage is a typical example of food packaged with an edible film. BACKGROUND ART An artificial edible film is used as a casing or a tubular edible film for packaging for mass-producing sausage, and an edible film mainly containing collagen is used. There are two methods for producing a sausage packaged with a film containing collagen as a main component. For example, as shown in JP-A-3-20362, one method is to first produce a tubular film containing collagen as a main component, and pack the food material in the tubular film. Another method is a method in which a composition containing collagen as a main component is extruded around the food material at the same time, or the collagen composition is coated around the molded food material with a spray or a coating means.

[0003]

Generally, a multi-step treatment is required to mold a collagen composition to obtain a tubular film. In the above-mentioned prior art, the collagen composition was treated with a molding coagulation liquid to which a cross-linking agent was added and molded, and then the obtained molded product was dried, or the collagen composition was treated with a molding coagulation liquid and molded. After that, it is dipped in a cross-linking agent solution, sprayed, brought into contact with smoke or gas, and then dried. Further, in the method of directly coating a food material extruded with a collagen composition, the collagen composition is extruded simultaneously with the food material or around the food material, or collagen is sprayed around the extruded food material or a suitable application means. The composition is coated and then immersed in a crosslinker solution to solidify the collagen composition. That is, in the method for obtaining a tubular film from a collagen composition, it is necessary to perform a multi-step treatment, and thereafter, the tubular film is packed with a food material. Therefore, it is not possible to use an infinitely long tubular film. It is possible, and continuous packed food cannot be manufactured. Further, although the method of directly coating the food material allows continuous production, it requires a plurality of treatment steps for the coating material after coating.

The present invention has been made in order to solve the problems in the prior art as described above, and it is possible to continuously produce a film-wrapped food product and to require a complicated treatment process for film treatment. An object of the present invention is to provide an edible film packaged food, a method for manufacturing the same, and a manufacturing apparatus therefor.

[0005]

The edible film-packaged food according to the present invention has a structure in which the food material is contained in a seamless cylindrical edible film containing vegetable protein as a main raw material.

The method for producing an edible film-packaged food according to the present invention comprises heating and kneading and melting a water-containing raw material containing a vegetable protein in a screw type extruder, and extruding the edible film into a thin tubular edible film through an annular extrusion port. It is a method of injecting a food material into the interior of the extrusion-molded edible film from the inside of the annular extrusion port in a closed state.

More specifically, the water-containing raw material contains a vegetable protein having a crude protein content of 50% by weight or more based on a solid, and 4 parts by weight per 100 parts by weight of the crude protein of the vegetable protein.
0 to 120 parts by weight of water and the crude protein 1 of the vegetable protein
This is a method of blending 0 to 80 parts by weight of a moisturizer with respect to 00 parts by weight.

The edible film packaged food production apparatus according to the present invention is provided with a screw type extruder, a die provided in communication with the tip of the screw type extruder, and a supply port of the die. And a die, wherein the die has a configuration in which an annular extrusion port communicating with the screw type extruder and an injection port communicating with the supply port are formed inside the annular extrusion port. is there.

More specifically, the die has a structure in which a cylindrical guide extending in the downstream direction is provided on the outer periphery of the annular extrusion port.

[0010]

In the edible film-packed food according to the present invention, since the film for packaging the food material is mainly composed of vegetable protein, it is a substance that is ingested as a part of normal food, so that it can be edible without any discomfort. It can be stably supplied at low cost as a raw material. Also, since it is a seamless tubular film, when used for sausage etc.,
Visually the same aesthetics as when using sheep intestine is obtained. In the method for producing an edible film-packaged food according to the present invention, a water-containing raw material containing a vegetable protein is continuously molded and extruded into a thin-walled tubular film, and the film is extruded from the inside of an annular extrusion port. By injecting the food material into the molded tubular film with the downstream portion closed, the food material is included in the tubular film and the tubular film is adhered and solidified to the food material to form a film packaging. Food is manufactured continuously. By squeezing or adhering the tubular film in which the food material is injected into each predetermined length, it is possible to continuously obtain foods of a size (length) suitable for cooking or edible. . Further, by injecting a food material in an amount exceeding the internal volume formed at the extrusion speed of the tubular film, the tubular film can be stretched and the thickness of the film can be reduced. That is, by mutually adjusting the extrusion speed of the tubular film and the injection speed of the food material, it is possible to produce a film-packaged food product having a desired thickness. Further, the edible film is composed of a vegetable protein having a crude protein content of 50% by weight or more with respect to a solid substance as a water-containing raw material, and thus the film is extruded into a film by kneading and melting by heating to obtain a crude protein 100 of the vegetable protein. By adding 40 to 120 parts by weight of water to 100 parts by weight of the vegetable protein, sufficient plasticity is imparted to the vegetable protein, and 0 to 80 parts by weight of a moisturizer is added to 100 parts by weight of crude protein of the vegetable protein. It imparts the desired flexibility to the extruded film. In the manufacturing apparatus of the edible film packaged food according to the present invention, by a screw type extruder having a screw capable of rotational driving inserted in a temperature adjustable cylinder,
A water-containing raw material containing vegetable protein is heated and kneaded to be plasticized into a molten state having fluidity at a predetermined temperature, and the water-containing state is melted from an annular extrusion port of a die provided in communication with the tip of a screw type extruder. The raw material is extruded and extruded into a thin-walled tubular film. On the other hand, the food material supplied from the food material supply device connected to the supply port of the die is injected into the inside of the thin tubular film from the injection port provided inside the annular extrusion port in communication with the supply port of the die. It Further, by a tubular guide provided in the outer periphery of the annular extrusion port of the die and extending in the downstream direction, a film-wrapped food product in which a food material is injected and the tubular film is stretched to have a larger outer periphery has a constant outer periphery. Regulated.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of the edible film packaged food product, the method for manufacturing the same, and the manufacturing apparatus therefor according to the present invention will be described in detail below with reference to the drawings. FIG. 1 is a sectional view showing a main part of an apparatus for producing an edible film packaged food according to the present invention. In FIG. 1, reference numeral 1 denotes a screw type extruder, which is a cylinder 2 which is horizontally arranged and penetrates in the horizontal axis direction to form an inner hole 2a, and which is rotatably inserted into the inner hole 2a. And a screw 3. The cylinder 2 has a temperature adjusting function divided into a plurality of sections in the axial direction of the inner hole 2a, and each section can be temperature adjusted, that is, heated and cooled. A die 5 is connected to the tip of the screw type extruder 1 via a die holder 4.

The die 5 communicates with the inner hole 2a of the cylinder 2 through the inner hole 4a of the die holder 4 and is formed into a hollow box-shaped body 6 in which an L-shaped film raw material flow path 6a is formed which is bent and continues to the extrusion port. And a tubular body 7 that is inserted through the hollow box-shaped body 6 into the linear film raw material flow path 6a that continues to the extrusion port. The tubular body 7 is inserted into the film raw material flow path 6a of the hollow box-shaped body 6 with a gap provided around the tubular raw material flow path 6a, and an annular extrusion port 5a having a clearance as uniform as possible is formed in the extrusion port. . At the axial center position of the cylindrical body 7, the food material flow path 7 is penetrated through in the axial direction.
a is formed, the end on the side of the annular extrusion port 5a is a food material inlet 7c, and the end on the other side is a food material supply port 7b.
I am trying. A food material supply device 9 is connected to the supply port 7b of the cylindrical body 7 via a food material supply pipe 8. Further, the annular extrusion port 5a of the die 5 is provided with a cylindrical guide 10 which surrounds the outer periphery thereof and extends in the downstream direction.

A case where an edible film packaged food is produced by the edible film packaged food production apparatus configured as described above will be described below. First, in the screw type extruder 1, the cylinder 2 adjusts each temperature adjusting section to a predetermined temperature. Next, the screw 3 is rotationally driven at a predetermined rotational speed by a driving device (not shown). In the screw type extruder 1 in the operating state as described above, the water containing the vegetable protein is supplied from the material supply port (not shown) provided at the rear end of the cylinder 2 (on the left side of FIG. 1) to the inner hole 2a of the cylinder 2. The raw material A, that is, the edible film raw material is supplied at a predetermined ratio. The water-containing raw material A containing vegetable protein is a mixture of vegetable protein with a predetermined amount of water and a moisturizer.

In the inner hole 2a of the cylinder 2, the water-containing raw material A
Is heated by the cylinder 2, is kneaded by the rotation of the screw 3 and is transported toward the tip end, and is plasticized and melted in the middle to be in a fluidized state. From the tip end of the screw type extruder 1, a predetermined temperature and a predetermined pressure, that is, an annular shape of the die 5. It is extruded from the extrusion port 5a at a temperature and pressure necessary for extrusion without foaming, and passes through the inner hole 4a of the die holder 4 and the film raw material flow path 6a of the hollow box-shaped body 6 to form a thin-walled tubular shape from the annular extrusion port 5a. Extruded and extruded into an edible film. On the other hand, the slurry food material B is supplied from the food material supply device 9 through the supply pipe 8 to the supply port 7b of the cylindrical body 7 at a predetermined ratio, and through the food material flow passage 7a, the edible film 20 of the edible film 20 is supplied. It is injected into the cylinder.

Extruded thin-walled tubular edible film 2
When the tip of 0 is closed and the food material B is injected at a rate higher than the volume rate of the edible film 20 that is extruded,
The edible film 20 which is still soft at a high temperature immediately after extrusion is stretched in the cylinder axis direction and the outer peripheral direction to be thinned, and is adhered and solidified to the food material B, and the outer peripheral portion is naturally dried and naturally cooled, and the edible film packaged food is It will be 30.
When the edible film 20 is stretched, the outer circumference thereof is regulated by the tubular guide 10, so that the edible film packaged food product 30 having a uniform outer circumference (thickness) is obtained. The above is similarly applied even if the food material B is liquid.

The seamless tubular edible film 20 is continuously extruded by the screw type extruder 1, and the food material B is continuously supplied by the food material supply device 9, whereby the edible film packaging is performed. The food product 30 is continuously manufactured. The vegetable protein which is the main raw material of the edible film 20 is soybean protein, wheat protein (gluten) or the like, and one of these vegetable proteins having a crude protein content of 50% by weight or more based on the solid matter or Several kinds are mixed and used as the main raw material. Water-containing raw material A supplied to the screw type extruder 1
Is 40 to 120 parts by weight, preferably 60 to 100 parts by weight of water, and also 0 to 80 parts by weight, and preferably 0 to 80 parts by weight, with respect to 100 parts by weight of the crude protein of the vegetable protein as the main raw material. Is composed of 5 to 50 parts by weight of moisturizer. Moisturizers include glycerin, sorbitol (sorbit), propylene glycol, mannitol and the like.

Water acts on the vegetable protein as a plasticizer, and easily plasticizes and melts the vegetable protein into a fluid state when the vegetable protein is heated and kneaded. If the amount of water is less than 40 parts by weight, the vegetable protein will not be sufficiently plasticized, and if it exceeds 120 parts by weight, the fluidity will be too high and the tensile strength of the extruded film will be reduced. The humectant facilitates plasticization of the vegetable protein by uniformly dispersing water in the water-containing raw material A, and at the same time maintains the water content in the extruded film to maintain flexibility. A humectant is added when the water content is easily dispersed uniformly due to the nature of the vegetable protein material, or when the food material B to be filled contains a large amount of water and the water content imparts uniform flexibility to the entire surface of the film. Although not necessary, it is necessary to add at least 5 parts by weight of the moisturizer in the usual food material B, and if it exceeds 80 parts by weight, the tensile strength of the film will be reduced.

The screw type extruder 1 for kneading and plasticizing the water-containing raw material A may be of a single-screw type or a twin-screw type, and in the case of a twin-screw type, may be of the same rotation or different rotation, meshed or non-meshed. However, a twin-screw meshing co-rotating extruder is preferred. The food material supply device for supplying the food material B is, for example, a screw type or piston type supply device capable of supplying a food material for sausages, a slurry type food material such as a stock solution of tofu, or a beverage such as juice. It is a metering pump.

[0019]

[Experimental Example] In this experiment, as a screw type extruder for edible film extrusion, a twin-screw meshing co-rotating extruder (made by Japan Steel Works: TEX-LMKII, screw outer diameter 30 mm,
A screw length / diameter ratio L / D = 15) was used. As the vegetable protein which is the main raw material of the edible film, powdered soybean protein “Fuji Pro SE manufactured by Fuji Oil Co., Ltd. (crude protein content CP: 90% by weight based on solids)” was used and 100% by weight of this soybean protein was used. 30 parts by weight of D-sorbit was mixed with 1 part and fed to the extruder at 1.3 kg / h, while 40 parts by weight of glycerin and 100 parts by weight of water were mixed with 1.
It was also supplied to the extruder at 4 kg / h, kneaded by heating, and plasticized and melted. Extruder has a cylinder temperature of 1
The operation was performed by setting the temperature to 65 ° C. and the screw rotation speed to 300 rpm. By this operation, the water-containing raw material at the tip of the extruder was in a plasticized and molten state at a temperature of 168 ° C. and a pressure of 8 kg / cm ² G. On the other hand, a twin-screw extruder (manufactured by Japan Steel Works: TEX-L, screw outer diameter 30 mm, L / D = 10) is used as a food material supply device, and 100 parts by weight of beef and 15 defatted soybeans are used as food materials. Parts by weight, casein N
a 3 parts by weight, Na polyphosphate (0.3 parts by weight) and sodium chloride (0.3 parts by weight).
3 parts by weight of the mixture was fed to a twin-screw extruder, and while being heated and kneaded, a direct system 10 provided at the tip of the edible film extruder.
mm, clearance 0.3 mm to a die having an annular extrusion port. In the die, to the edible film extruded in a thin-walled tubular shape from the annular extrusion port, by injecting the food material while adjusting the injection amount therein, the edible film has an outer shape of 1 to 4.5 times, 0.3 mm to 15 in thickness
A food product, which was stretched in the range of μm and packaged with a thin edible film, was continuously obtained.

[0020]

Since the edible film packaged food and the method and apparatus for producing the same according to the present invention are configured as described above, the following effects can be obtained. (1) By obtaining an edible film for packaging food materials from a water-containing raw material containing vegetable protein as a main component, it has sufficient strength and can be stretched to a thin film of 0.3 mm to 15 μm. , Eaten comfortably. (2) The edible film packaged food can be continuously manufactured by injecting the food material into the extruded tubular film. (3) A tubular film produced from a water-containing raw material containing a vegetable protein as a main component is obtained by treating the water-containing raw material with a screw type extruder, and after the extrusion molding, a packaged food is obtained by natural drying and natural cooling. No chemical treatment is required, no complicated pre-treatment or post-treatment is required, and the manufacturing process is very simple. (4) Since the manufacturing process is simple, the manufacturing device has a simple structure without the need for equipment for the complicated processing process that was required in the past. (5) The edible film-packaged food product having a uniform shape can be continuously obtained by limiting the outer diameter after extrusion by the tubular guide to a constant value.

[Brief description of drawings]

FIG. 1 is a sectional view showing a main part of an apparatus for producing an edible film packaged food according to the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Screw type extruder 5 Die 5a Annular extrusion port 6a Film raw material flow path 7a Food material flow path 7c Injection port 9 Food material supply device 10 Cylindrical guide A Water-containing raw material B Food material

Claims (5)

[Claims] 1. An edible film-packed food, characterized in that a food material is enclosed in a seamless cylindrical edible film (20) made mainly of vegetable protein. 2. A water-containing raw material (A) containing vegetable protein is heated, kneaded and melted by a screw type extruder (1) and extruded from a circular extrusion port (5a) into a thin-walled edible film (20). , The food material (B) from the inside of the annular extrusion port (5a) inside the extrusion-molded edible film (20) in a state in which the downstream portion is closed.
A method for producing an edible film-packaged food, which comprises injecting 3. The water-containing raw material (A) comprises a vegetable protein having a crude protein content of 50% by weight or more based on a solid, and 40 to 120 parts by weight of water based on 100 parts by weight of the crude protein of the vegetable protein. And a moisturizing agent in an amount of 0 to 80 parts by weight with respect to 100 parts by weight of the crude protein of the vegetable protein. 4. A screw type extruder (1), and a die (5) provided in communication with the tip of the screw type extruder (1),
It is composed of a food material supply device (9) provided in communication with the supply port (7b) of the die (5), and the die (5) is an annular pusher that communicates with the screw type extruder (1). An injection port (7) communicating with the supply port (7b) inside the outlet (5a) and the annular extrusion port (5a).
c) An edible film-packaged food manufacturing device, characterized in that 5. The edible film according to claim 4, wherein the die (5) is provided with a cylindrical guide (10) extending in the downstream direction on the outer circumference of the annular extrusion port (5a). Packaged food manufacturing equipment.