JP2003180241A - Method for producing stringency-removed persimmon cut into small piece - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a method for producing a stringency-removed persimmon cut into small pieces. <P>SOLUTION: This method for producing the stringency-removed persimmon cut into small pieces comprises peeling a persimmon which is additionally ripen after harvested, removing its calyx, cutting the prepared persimmon into small pieces, then immersing the pieces in hot water or spraying the pieces with steam so as to conduct a preliminary astringency-removing treatment, and further drying the stringency-removed small pieces of persimmon sacrocarp so as to conduct an additional astringency-removing treatment, by irradiating the pieces with far infrared light, until the pieces attain a dryness factor of 70-80%. <P>COPYRIGHT: (C)2003,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for producing de-astringent persimmon cut into small pieces.

[0002]

2. Description of the Related Art As processed astringent persimmons, there are Sawashi persimmons,
Traditionally, dried persimmons and dried persimmons have been known. However, since these processed persimmons without astringency are soft inside, it is difficult to cut them into small pieces with a knife or knife, and even if they can be cut, they lose their shape and look great. It is usually damaged. In particular, since the Anko persimmon contains a relatively large amount of water, it is almost impossible to cut it into small pieces without losing its shape.

By the way, there is no conventional method for processing astringent persimmon, which is cut into small pieces in a raw state, and then the small pieces of pulp are subjected to astringent removal. There is no example.

[0004]

SUMMARY OF THE INVENTION The object of the present invention is that not only the color and luster of the entire surface of the small piece including the cut surface is good, but it does not cause an offensive odor, and it hardly causes mold. The object is to provide a method for producing flaky persimmons.

[0005]

[Problems to be Solved by the Invention] The method for producing small piece-shaped astringent persimmons proposed by the present invention is as follows: Astringent persimmons that have been left to stand at room temperature for 5 to 6 days after harvest to be matured are peeled to remove the heta. After that, it is cut into small pieces, and then the small pieces of pulp are subjected to a primary astringent treatment by dipping in hot water or spraying with steam. Far-infrared radiation is applied to this without performing day-drying to perform secondary astringent removal, and far-infrared drying is performed until the weight of the small piece-shaped pulp is reduced by 70 to 80% by weight. Drying the flesh-like pulp from which primary astringency has been removed for 2 to 3 days prior to irradiation with far infrared rays has the effect of improving the color luster (gloss) of the finally obtained flesh-free astringent persimmon. .

[0006]

BEST MODE FOR CARRYING OUT THE INVENTION In the method of the present invention, the astringent persimmon to be treated may be of any variety, but is usually suitable such as Aizu Shiranashi and Hiratanashi. As for the additional ripening of the harvested astringent persimmon, it is suitable to stand still for 5 to 6 days in a room under the conditions of a temperature of 15 to 20 ° C. and a relative humidity of 75 ± 5%, and ventilation of the room is not always necessary. The aged persimmon (raw persimmon) is then peeled off, and after removing the shavings, cut into small pieces. The cutting method can be arbitrarily selected from a flat shape, a stick shape, and a dice shape. If the persimmon has seeds, the seeds may or may not be removed. When cutting persimmons into flat plates, either horizontal or vertical cutting is possible. The thickness of the cut is preferably about 5 to 15 mm. When cutting into a stick shape (square bar shape), the length should be the size of a persimmon and the cross section should be 10 to 2 sides.
A rectangular shape of about 0 mm is suitable. Moreover, when cutting in a dice shape, it is preferable that one side is about 10 to 20 mm.

The persimmon (flesh) cut into small pieces is then subjected to a primary astringent (de-astringent) treatment. The primary astringent treatment is performed by immersing in hot water at 90 ° C. or higher or by steam injection, and when steam spraying is adopted, it is preferable to spray steam evenly on the small pulp. The processing time for primary astringent removal is preferably adjusted according to the hardness and size of the flesh of the flesh so that the flesh of the flesh does not lose its shape, and generally about 5 to 10 seconds is selected. . By the way, in a cut product having a relatively soft pulp, hot water immersion or steam injection is performed for about 5 seconds.

Far-infrared rays are irradiated to the small flesh-shaped flesh after the primary astringent removal, but prior to this, it is preferable that the primary deflated flesh-shaped pulp is dried in the sun for 2 to 3 days. This is because it is possible to give gloss to the appearance of the pulp. By irradiation with far infrared rays, the flesh-like pulp is further astringent (secondary astringent) and simultaneously dried. The irradiation time of far infrared rays is preferably determined by the weight reduction of the small piece-shaped pulp before and after irradiation. In the present invention, the weight of the pulp before irradiation is 70
Far-infrared irradiation is continued on the pulp until the reduction is -80%. The drying rate referred to in the present invention is a value obtained by dividing the weight loss of the flaky pulp before and after irradiation by the weight of the flaky pulp before irradiation, as a percentage.

In order to keep the drying rate of the small flesh-like pulp within the range of 70-80%, it depends on the wattage of the far infrared heater used, but in a room at a temperature of 25-30 ° C and a humidity of 20-40%. By irradiating the small piece-shaped pulp with far infrared rays for 4 to 5 days, the drying rate of the pulp can reach 70 to 80%, and at the same time, the pulp can be astringent enough to be satisfied. It is needless to say that it is preferable to irradiate far-infrared rays evenly on the small-sized pulp. In addition, when a small piece of pulp is dried by far-infrared irradiation to a drying rate of 70 to 80%, if the pulp is previously dried in the sun, it is not dried in the sun and compared with the one irradiated with far-infrared light. As a matter of course, the water content of the pulp itself after irradiation with far infrared rays is small.

[0010]

EFFECTS OF THE INVENTION In the case where a ready-made de-astringent persimmon is cut into small pieces, in contrast to the fact that the flesh loses its shape on the cut surface, the small pieces obtained by the method of the present invention The de-astringent persimmon that has been cut into pieces has a good appearance because it does not cause such a deformation, and therefore the small-sized de-astringent persimmon obtained by the present invention is a tea cake having a good appearance.

[0011]

[Example] Example 1 After peeling and stripping a flat-nucleus persimmon harvested from the same persimmon tree and ripened, each astringent persimmon was 10 m thick in a raw state.
It was cut into about m chips (flat plate) and divided into 3 groups of 20 kg each. The astringent persimmons of the first group were subjected to the primary astringent treatment by dipping in hot water, the second group was subjected to the fumigation of sulfur at night, and the primary astringent treatment was carried out at the third group. Far-infrared rays were radiated to the small piece-shaped pulp of each group without any treatment, and secondary astringent removal and drying were performed. In addition, each group was subjected to sun drying prior to far infrared irradiation. In addition, for the second group of fumigation of sulfur, a fumigation box of 2 m ³ and 25 g of sulfur were used. Table 1 shows the processing conditions of each group.

[0012]

[Table 1]

The dried products of each group after irradiation with far infrared rays are
Each item shown in Table 2 was evaluated on a 5-point scale. The panel consists of 13 adults, and the average score of each panel is shown in Table 2 for each item.
The total score is shown in Table 1. In addition, when the evaluation was excellent, the score was 5, and in the following, the score was 4.3.2.1 in the order of excellent, good, good, and bad.

[0014]

[Table 2]

Claims (2)

[Claims] 1. Astringent persimmon that has been left to stand for 5 to 6 days at room temperature after harvesting to be ripened and then peeled to remove the heta, and then cut into small pieces, and then the small pieces of flesh 70% to 80% by weight reduction is carried out by applying a primary astringent treatment by soaking in hot water or spraying with steam, and then irradiating far infrared rays to the astringent pulp that has been astringent to remove secondary astringency. A method for producing small pieces of astringent persimmon that is characterized by performing far-infrared ray drying up to. 2. A small piece of pulp that has undergone the primary astringent treatment is 2
2. The method for producing small astringent persimmons according to claim 1, wherein secondary astringent removal by far infrared rays and drying are carried out after drying in the sun for 3 days.