JP2675527B2 - Method for producing apple puree - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

FIELD OF THE INVENTION The present invention relates to a method for producing apple puree.
Respect the law, and more particularly relates to the manufacture how apple puree crushed finely the skin and cored apple.

[0002]

2. Description of the Related Art Conventionally, when an apple puree is industrially produced from apples with a skin and a core, a whole apple crushed without removing the skin and the core is subjected to a heat treatment as a browning-preventing treatment. After the application, a method is employed in which the crushed apples are lined with a screen having an opening of 0.5 to 1 mm to remove skins and seeds, and then subjected to heat sterilization.

[0003]

The apple puree obtained by such a conventional method is in paste form and is used as various raw materials such as confectionery. However, in this apple puree, since the apple fruit is pulverized too finely, it is not possible to obtain a unique texture that is grated and crushed (hereinafter sometimes referred to as a grated texture).
An object of the present invention is a manufacturing method of apple puree may exhibit texture of grated Jo Hisage Kyosu to Rukoto.

[0004]

Means for Solving the Problems As a result of studies to achieve the above-mentioned object, the inventors of the present invention have found that a grated food can be obtained by setting the opening of the screen for lining the crushed apple crushed product to 3 mm or more. It is difficult to remove apple skins and seeds with a screen with an opening of 3 mm or more.
We have found that it is necessary to remove apple skins and seeds before shredding or crushing. Furthermore, crushed apples and
And / or apple puree transfer with a screw pump and / or
Performed with a rotary pump and treated to prevent browning
Tube heat exchanger for heat treatment and heat sterilization
By doing so, crushed apples and apple puree
It has a grated texture without being re-ground.
The present invention has been achieved by finding that apple apple puree can be obtained .

That is, according to the present invention, when apples with a skin and a core are finely crushed to produce an apple puree, a crushed apple crushed product after removing the skin and the core of the apple is subjected to a heat treatment as a browning preventing treatment. after applying, the the apple pulverized grated and strained by mesh 3mm or more screen Jo apple puree, then is performed with the heat sterilization treatment to the apple puree, the apple powder
Transfer of crushed material and apple puree and reprocessing in heat treatment
In order to prevent crushing, crushed apples and apple puree
Transfer to screw pump and / or rotary pump
Thus performed, heat treatment and pressure as 且 one browning prevention treatment
The method for producing apple puree is characterized in that the heat sterilization treatment is performed by a tube heat exchanger . In the present invention, in the heat sterilization treatment, the tube type heat exchange
Immediately add the apple puree that has been heat-treated with a container
By applying a cooling process using a tube heat exchanger
Can be sterilized without changing the taste of apple puree.
You.

[0006]

EFFECTS OF THE INVENTION According to the present invention, since the crushed apples are lined with a screen having a larger opening than the conventional ones and allowing the passage of apple skin and seeds, an apple puree having a grated texture can be obtained. You can Further, in the present invention, since an opening screen through which the apple skin and seeds can pass is used, the skin and seeds are mixed in the apple puree by crushing the apple skin and core-removed apples. To prevent that. Moreover, apple powder
Transfer of crushed material and apple puree with screw pump and
/ Or rotary pump and browning prevention treatment
Tube heat exchange
Crushed apples and apple puree
Re-grinding during transfer and heat treatment can be prevented
It is possible to obtain apple puree with a grated texture.
Wear.

[0007]

BRIEF DESCRIPTION OF THE DRAWINGS FIG.
FIG. 1 is a schematic diagram showing an embodiment of the present invention. In FIG. 1, an apple skin and core are removed by a skin and core removing machine 10 and crushed by a hammer crusher 12. In the apple peeling and core removing step and the crushing step, it is preferable to remove the flower tufts of the apple and adjust the number of revolutions of the hammer crusher 12 so that the degree of crushing is made uniform. In this way, the crushed apple crushed product is sent to the heating device 14 and subjected to heat treatment, and is subjected to browning prevention treatment for deactivating the enzyme contained in the apple. In this heat treatment, it is preferable that the crushed apples be retained for about 4 to 5 minutes in the heating device 14 maintained at a temperature of about 80 ° C. Furthermore, the presence of L-ascorbic acid in the crushed apple product allows effective browning prevention treatment. Therefore, it is preferable to add L-ascorbic acid in the grinding step.

[0008] The crushed apple that has been subjected to browning prevention treatment is
An apple puree with a mesh size of 3 mm or more, preferably 3 to 6 mm, provided on the lining machine 16 to be lined while being pressed by the blades so that the crushed apples have a uniform particle size, and which has a grated texture. Become. here,
When the screen has an opening of less than 3 mm, the crushed apple product is too finely chopped, so that the obtained apple puree does not have a grated texture. The grated apple puree is once stored in the tank 18 and the pH is adjusted by adding an organic acid such as citric acid, and then by the heat sterilizer 20 including a heating device 22 and a cooling device 24. The heat sterilization process is performed, and then the can 26 is filled. In this heat sterilization process, the heating device 2
Cooling device 2 for apple puree heat-treated by 2
Cool immediately by 4. At this time, the temperature of the heating device 22 is maintained at 98 ° C. or higher to make the residence time of the apple puree about 15 seconds, and the temperature of the apple puree heat-treated by the heating device 22 is changed to the apple puree by the cooling device 24. The temperature of the cooling device 24 is adjusted so that the residence time is 30 ° C. or lower in about 15 seconds. Under such heat sterilization treatment conditions, it is possible to sterilize apple puree without changing the taste or the like.

The heating device 14 used in this embodiment,
The reference numeral 22 and the cooling device 24 are tube heat exchangers, and pass a crushed apple or apple puree through a tube whose outside is heated or cooled by a heat medium such as steam or a refrigerant such as hot water. In this way, by passing the crushed apple or apple puree in the tube,
It is possible to heat or cool the crushed apple or apple puree in an extremely short time without crushing. Here, using a plate-type heat sterilizer that has been conventionally used in the food industry, because the crushed apples and apple puree will be recrushed, it is difficult to obtain an apple puree with a grated texture. Becomes

Further, in this embodiment, crushed apples and p
As the pumps 30, 30 for transferring the H-adjusted apple puree to the heating devices 14, 22, the screw pump 30 shown in FIG. 2 capable of increasing the discharge pressure to a high value is used. In this screw pump 30, a screw 52 rotatably inserted in a casing 50 is rotated by an electric motor 54, and the crushed apple or apple puree supplied from an inlet 56 is pressurized and discharged from an outlet 56, thereby heating the heating device 14 , 22. Furthermore, in this embodiment, as the pump 32 for transferring the apple puree that has passed through the lining machine 16 to the tank 18, a high discharge pressure is not required, and therefore the rotary pump 32 shown in FIG. 3 is used. The rotary pump 32 rotates while meshing with a pair of cocoon-shaped rotors 64 and 66 inside a casing 62, and discharges apple puree supplied from an inlet 68 from an outlet 70. Thus, by using the screw pump 30 and the rotary pump 32 as a transfer means for crushed apples or apple purees, the crushed apples or apple puree are re-crushed by the blades like a centrifugal pump in which conventional blades rotate. Therefore, apple puree having a grated texture can be easily obtained.

The apple puree obtained in this example is used for various purposes, for example, it is also used as a raw material for an apple puree-containing beverage produced by adding apple puree to a beverage concentrate. When producing such an apple puree-containing beverage, a mixed beverage solution in which a predetermined amount of apple puree is added to a stock solution for beverage is usually stored in a blend tank and distributed into small containers. At this time, when the mixed beverage liquid is stored in the blend tank, the apple puree easily precipitates, so that the amount of apple puree in the beverage distributed in the small container easily varies. The phenomenon that the apple puree easily precipitates in the mixed beverage liquid is due to the difference in specific gravity between the apple puree and the stock solution for beverage. Therefore, in this example, a sweetener such as sugar and a thickener were added to the stock solution for beverage, and by eliminating the difference in specific gravity between the apple puree and the stock solution for beverage as much as possible, the mixed beverage solution was prepared. Prevent the precipitation of apple puree as much as possible. Here, when the amount of sweetener such as sugar added to the stock solution for beverage is large, the amount of the thickener added is reduced. Conversely, when the amount of sweetener such as sugar added is small, the thickener is thickened. Increase the amount of agent added. The thickeners that can be used in this example are carrageenan, pectin and the like.

Further, in this embodiment, the blend tank is equipped with a stirrer to prevent the precipitation of apple puree. The stirrer is provided with an inverter, and the rotation speed of the stirring blade is adjusted so that the apple puree will not be crushed again by stirring. Further, in the blend tank of the present embodiment, an inert gas such as nitrogen is bubbled into the stored mixed beverage liquid to supplement the stirring by the stirring blade. In this way, the mixed beverage liquid that eliminates the difference in specific gravity between the apple puree and the stock solution for beverage as much as possible, by bubbling an inert gas such as nitrogen while stirring with a stirrer, the precipitation of apple puree can be prevented. Therefore, even if the mixed beverage liquid is distributed to the small containers, the variation in the content of apple puree can be minimized.

[0013]

INDUSTRIAL APPLICABILITY According to the present invention, apple puree having a grated texture can be easily obtained and used for various raw materials such as confectionery. In particular, such Li
When ngo puree is used as a raw material for an apple puree-containing beverage, a beverage with a crushed texture can be obtained.

[Brief description of the drawings]

FIG. 1 is a schematic diagram illustrating an embodiment of the present invention.

FIG. 2 is a vertical sectional view of a screw pump used in the present invention.

FIG. 3 is an explanatory diagram for explaining a rotary pump used in the present invention.

[Explanation of symbols]

 10 Skin and Core Removal Machine 12 Hammer Crusher 14 Heating Device for Browning Prevention Treatment 16 Backing Machine 20 Heat Sterilization Device 22 Heating Device Constituting Heat Sterilization Device 24 Cooling Device Constituting Heat Sterilization Device 30 Screw Pump 32 Rotary Pump

Claims (2)

(57) [Claims] 1. When an apple with a core and a core is finely crushed to produce an apple puree, after removing the skin and the core of the apple, the crushed apple crushed product is subjected to a heat treatment as a browning preventing treatment, The crushed lingo product is lined with a screen having an opening of 3 mm or more to give a grated apple puree, and then ,
Together subjected to heat sterilization in the apple puree, transport and heating treatment of the apple pulverized and apple puree
Crushed apples and phosphorus
Screw pump and / or rotor for transfer of gopures
Re-pump and add as a browning prevention treatment.
Tube heat exchanger for heat treatment and heat sterilization
A method for producing apple puree, which comprises carrying out . 2. A tube type heat exchanger in the heat sterilization process.
Immediately add apple puree that has been heat-treated with a
The tube is heat-treated by a tube heat exchanger.
A method for producing the described apple puree.