JPS5812623A - Prevention of curving during heating of animal protein food - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed description of the invention] Regarding how to stop it.

Conventionally, when animal protein foods such as fish and livestock meat are heat-treated, the flat foods become curved, making them look bad and difficult to eat. The cause of this curvature is protein denaturation.
Because it is considered to be a problem. For example, insert a skewer into open meat such as eel or conger eel. This skewer prevents curvature due to protein denaturation. After protein denaturation, remove the skewers. Methods have been adopted to prevent curvature.
This method requires a lot of time and effort to skewer and remove the skewers, which has the disadvantage of increasing processing costs. There is a strong demand in the industry for the development of a method to prevent the curvature of protein foods that require the use of skewers.

The present invention has been made to meet the above-mentioned needs.
Curvature of protein foods occurs due to protein denaturation, and this phenomenon can be prevented by inserting skewers to suppress the curvature. If you hold down the food from the surface without skewering it and apply a force corresponding to the curved surface. I came up with the idea that it is possible to prevent bending.
Place a pressure rod on top of the food and heat it. The curvature during protein denaturation is held down with a holding rod, and after sufficient protein denaturation, the holding stick is removed after cooling a little.
Hold food items flat without bending them.

Since then, even after further heat treatment, the product remains flat without any curvature, resulting in a product that looks good and is easy to eat. It was done.

Therefore, the present invention provides a heat treatment apparatus for steaming, dry heating, boiling, etc. of foods.
The foods are combined with a curvature prevention means that applies a force sufficient to suppress curvature during heating, and this means prevents the foods from curving until the protein is sufficiently denatured. This is the first successful industrialization of a method for preventing animal protein foods from curving.

An example of the method for preventing curvature during heating of animal protein foods related to the present invention will be described below with reference to the drawings.

A in the figure is a device for heat-treating protein foods.
As shown in FIG. 1, there are a net or stay conveyor 3 for transporting food products 2, and a steam pipe 4 for applying steam to the food products. Alternatively, a dry heat device 5 that applies fire heat, electric heat, hot air, electromagnetic waves, etc. is provided. In addition, when heat-treating foods 2 by boiling, the processing chamber 1 is formed into a boat shape as shown in Figure 2P, and boiling water 6 is stored inside it. It is provided to move under the net or stay conveyor 3. B is a means for preventing curvature of the food items 2 due to the heating 1, and the above-mentioned net or stay conveyor 3 is loosened above the food item 2 to be transferred from the conveyor 3t so that the food item 2 is placed on top of the food item 2. Use a stay conveyor as shown in Figure 3, or attach shallow dragons 8 at predetermined intervals to the conveyor 3, applying force to prevent bending, but not leaving any traces of holding down 2 tons of food. Attach the opening/closing lid 9 &111' to the basket 8t, and support the opening/closing lid 9 at predetermined intervals with a large number of restraining rods 10 & 1 which can be raised and lowered, and place food items V on the restraining rod 101 to prevent bending. A basket with a lid or the like as shown in Figure 1 shall be used.

The invention will now be described in detail with reference to the above-described apparatus.

In the heat treatment apparatus A shown in FIG.
If the flat protein food 2 is supplied to the starting end of the conveyor 3 that transports the food 2 while supplying steam or dry heat, the food 2 reaches below the curvature prevention means B using a stay conveyor. The prevention means Be is heated in a state in which each stay is placed on top of the food 2 and suppresses it, so even if the 1 food 2 undergoes protein denaturation due to heating and tries to bend, this force will prevent it from curving. Because it is suppressed by prevention method B, protein denaturation is completed while one food item remains flat.

In this state m, even if the food is released from the restraint caused by the curvature prevention means B# and the food is heated, the curvature of the food does not occur.

Further, the effect of the curvature prevention means B using this stay conveyor can be similarly achieved by heat treatment using hot water 6 as shown in Figure 1 of the drawing.

Furthermore, when using a lid attached as shown in FIG. 1 as the bending prevention means B, the basket 8P is
- When the opening/closing lid 9 is closed after storing the food items 21, the holding rod 10 holds the food items down and heats the food items in a state where curvature is prevented, so the food items 2 are kept flat in this case as well. 1) Protein denaturation can be completed, and 2) curvature of food products 2 due to heating can be prevented.

In the above case, select conger eel as protein food 2,
When boiling 1 kg at 0℃ for 3 minutes and then cooling it,
Since 0.4 curvature was prevented due to the pressure of preventing curvature in cooking, it was found that the above-mentioned condition 1 was preferable. .

Based on the above results, the conger eel that has been boiled or steamed is properly cooled while applying 3 y of pressure to prevent it from curling, then seasoned with sauce and grilled.

When it was flat, it had a good appearance and was easy to eat, but when it was roasted under a pressure of 3y and d to prevent it from curving, although it was flat, the flesh tended to become hard.

As mentioned above, the method for preventing curvature during heating of protein foods related to the present invention 1 prevents curvature of protein foods due to heating by means of curvature prevention means, thereby ensuring sufficient protein denaturation of the foods. Because of this, the trouble of inserting and removing food items from skewers can be completely eliminated, and since skewers are not required, the processing cost of each food item is significantly reduced, making it possible to provide each food item to the market at a low price. It also has the effect of being hygienic as one food item is not touched by human hands.

[Brief explanation of the drawing]

The drawings show an example of an apparatus suitable for carrying out the method of preventing curvature during heating of animal protein foods related to the present invention 1. Fig. 7 is a longitudinal cross-sectional side view showing its basic form, and Fig. 2 shows a partially modified version. FIG. 3 is a perspective view showing a part of the stay conveyor type curvature prevention means, and FIG. 1 is a side view showing a lid-attached type curvature prevention means. In the figure, A is a heat treatment device, 2 is a food product, and B is a curvature prevention means. Dream Al / Diagram early and early

Claims (1)

[Claims] Is there a way to prevent animal protein foods from warping when heated? A method for preventing curvature during heating of animal protein foods, which is characterized by heating and cooling to a degree sufficient for protein denaturation while suppressing curvature.