JPS6122944B2 - - Google Patents

Description

[Detailed description of the invention]

The present invention relates to a method for swelling mid-bone fragments. As a conventional technology, as seen in Japanese Patent Publication No. 1983-30159, the humidity of the cut core is adjusted to 24 to 60% WB, and the temperature is 121 to 399 degrees Celsius, which contains at least 30 vol% of water vapor.
A so-called flash drying method is known in which the material is brought into contact with the material for a short time of about 0.5 to 3 seconds in a gas of According to this method, the filling capacity of unprocessed chopped material is 30~40c.c./10
45 to 70c.c./10, which is almost twice as much as g.
The filling capacity is 1.5 g, and a high swelling ratio can be obtained. However, practical leavening processing equipment using the airflow drying method requires large-scale blowers, leavening agent collectors, etc., and the core cutting process is installed in parallel with the deboning and leaf cutting process, as seen in general tobacco factories. It was difficult to install it in the current space. In addition, with this method, the chopping processing time could not be set over a wide range, and the temperature pattern inside the dryer was almost determined by the gas flow rate, inlet gas temperature, and chopping amount, and there was a limit to the operating range of the flavor control. The first object of the present invention is to make a practical device more compact, and the second object is to improve the aroma and taste by easing the taste and removing off-flavors. Hereinafter, the present invention will be described in detail with reference to Examples. FIG. 1 shows the apparatus used in the present invention. In the figure, A is a rotary cylindrical humidity controller, B is a rotary cylindrical dryer, 1 is a supply conveyor to the humidity controller A, 11 and 12 are conveyors from the humidity controller A to the dryer B, 32 is a take-out conveyor from dryer B.
Humidity control device A includes a rotating cylinder 2 arranged at a slight inclination to a plurality of drive rollers 9 and 9' provided on a pedestal 7, and a heating cylinder fixedly provided so as to cover the rotating cylinder 2. jacket 6, a blower 4 and an air heater 5 for supplying hot air to the jacket 6 through circulation ducts 33, 34.
, a nozzle 3 for spraying water inside the rotating cylinder 2, a scraping pin 10 provided on the inner surface of the rotating cylinder 2, and a roller drive electric motor 8.
have. The dryer B includes a rotating cylinder 13 arranged slightly inclined on a plurality of drive rollers 28 and 28' provided on a pedestal 27, a means for sending heated air through the rotating cylinder 13, and a rotating A heating jacket 26 fixedly provided so as to cover the circumference of the cylinder 13, a fixed cover plate 35 provided so as to be in contact with the inlet of the rotating cylinder 13, and a supply chute 36 provided on the fixed cover plate 35, It has a supply rotary valve 16 provided at the top of the supply chute 36, an outlet hood 37 provided to cover the outlet of the rotary cylinder 13, and a discharge rotary valve 17 provided at the bottom of the outlet cover plate. are doing. A large number of stirring/ventilating blades 14 extending in the longitudinal direction of the rotating cylinder 13 are provided along the outer circumferential inner surface of the rotating cylinder 13, and a wire mesh 15 for preventing material spillage is provided between the stirring/ventilating blades 14. The means for sending the heated air is a rotary cylinder 1.
Each block is divided into three sections by a partition plate 38 in the longitudinal direction of the rotary cylinder 13, and each block has a section of about 1/4 of the upper cross-sectional area of the rotating cylinder 13 (shown on the upper right side in FIG. 2). A hood 29 disposed close to the outer periphery of the rotating cylinder 13, a blower 18 and a superheater 20 connected to the hood 29, and a blower 1
A saturated steam supply pipe 19 connected to a duct 21 between the rotary cylinder 13 and the heater 20 supplies steam-containing heated air from the heater 20 and the saturated steam supply pipe 19 to the rotary cylinder 13. A hood 30 for guiding into the hole 39 is attached to the outer periphery of the rotary cylinder 13 at a portion of about 1/4 of the lower cross-sectional area (shown on the lower left side in FIG. 2) of the rotary cylinder 13 on the side opposite to the hood 29. A cover plate 31 is disposed adjacent to the rotating cylinder 13 between the hoods 29 and 30. A jacket 26 for heat insulation is provided around the cover plate 31, and heat insulation air heated by a blower 24 and an air heater 25 is circulated within the jacket 26. Further, a punching metal 22 is provided in the hood 30 to uniformly introduce gas into the cylinder 13. In addition,
Reference numeral 40 denotes a blower chamber for sending heated air to each divided block of the rotary cylinder 13. The shredded midribs are fed into a humidity controller A by a quantitative supply conveyor 1, and the humidity is adjusted to 30 to 60% by weight by adding water from a nozzle 3 and heating from a heating jacket 6. While the chopped mid-bones are stirred and mixed in the humidity controller A for 3 to 5 minutes, water permeates uniformly into the chopped cell tissue and swells. The swollen cut bones are fed from the feed conveyor 12 into the cylinder 13 of the dryer B through the feed rotary valve 16. The inserted core cut pieces are brought into contact with steam-containing heated air having a temperature of 140 to 200 degrees Celsius, a flow rate of 0.2 to 2.0 m/s based on the lower cross-sectional area of 1/4 of the cylinder circumference, and a dew point temperature of at least 80 degrees Celsius.
It is dried to a moisture content of 8 to 20% by weight while being stirred by a stirring blade 14 provided on the inner surface of the cylinder, and is taken out of the system through an outlet rotary valve 17. The passage time of the cut core inside the dryer B is set to 1 to 3 minutes by adjusting the rotational speed and inclination of the cylinder 13 in order to maintain the above-mentioned drying conditions. In general, in order to dry the mid-bone fragments that have swollen due to humidity conditioning while maintaining the swollen cell tissue,
Drying can be carried out under conditions where the surface tension of water is maintained at 0, but this condition is ultimately the critical point of water, and is high with a critical pressure of 218 atm and a critical temperature of 374°C. Therefore, when the cut bones are dried under such conditions, they are carbonized and it is difficult to realize this method in terms of equipment. Therefore, as a result of various studies on drying conditions that would suppress the shrinkage due to drying of the humidified cut bones and avoid deterioration of smoking taste as much as possible, the drying conditions were determined to be easy to implement.
Use steam-containing heated air of 140 to 200°C and a dew point of 80°C or higher, that is, the water vapor content in the air at atmospheric pressure is approximately 45% by volume or higher, and reduce the water content in the carved core after drying to 8 to 80°C. It has been found that the preferred drying conditions are when the content is adjusted to a range of 20% by weight. In addition, the water content in the cut bones after drying is 8% by weight.
If it is less than this, it is not preferable because the cut bones become easily crushed due to overdrying. Due to this drying process, the temperature of the cut bones inside the dryer decreases.
When the temperature rises to around 100℃, the surface tension of water in the cell tissue decreases and its drying shrinkage is suppressed to a minimum.
The mid-bone fragments are swollen by drying while maintaining the cell tissue in a moist state. In the present invention, since the temperature of the heated air flow that contacts the cut core at almost right angles can be set independently for each section, the temperature of the heated air flow that contacts the cut core at almost right angles can be set independently for each section. It has a function that allows for a large temperature difference between the gases, and the amount of heat transfer in the initial stage of drying is smaller than that of flash drying, but the amount of heat transfer after that is large, and under the same drying conditions (dryer size, gas amount, inlet gas temperature/humidity, moisture before drying, moisture after drying)
When , it is possible to increase the throughput. Further, according to the present invention, as mentioned above, the flow rate of the heated air introduced into the dryer B can be set in a wide range of 0.2 to 2.0 m/s, the temperature in the range 140 to 200°C, and the processing time in the range of 1 to 3 minutes. It is possible to set the nitrate content for each section from 1 to 1.5.
% of abnormal midbones are used mainly for the purpose of removing nitrate, while normal midbones are used as raw materials and materials for the purpose of removing bitterness, dullness, etc. and creating a pleasant flavor with a rich aroma. Processing conditions can be arbitrarily set according to the flavor quality of the processed product. Next, a more detailed explanation will be given with reference to Examples. Example 1 A 6:4 mixture of yellow species and native species with a width of 0.2 mm
The throughput of the present invention and the flash drying method was investigated under the processing conditions shown in Table 1 using the cut bones of. As a result, as shown in Figs. 4 and 5, the processing amount of the present invention is 16% higher than that of the flash drying method.
In the case of %WB, it is 1.1 to 2.0 times, and the moisture after drying is 9%.
In the case of WB, it is as high as 2.5 to 3.0 times. Further, the swelling ratio of the present invention under the above processing conditions is shown in FIG. Swelling rate = [Compression height of treated product - Compression height of control product / Compression height of control product] × 100 The compression height is defined as the compression height when a certain amount of shredded powder, which has been adjusted to a moisture content of approximately 13% WB, is placed in a cylinder. This is the height of the groove when a load of 0.117Kg/cm ² is applied. Example 2 A normal yellow seed bone cut with a cut width of 0.2 mm was used.
The aroma and taste characteristics of this method were investigated under the processing conditions shown in 2.

【table】

[Table] For the quality of incense, the control product is
The product was processed using the method of the patented invention, and was evaluated by a panel of three experts using the ±3 point method shown below, and expressed as the average score of the three experts (rounded to the first decimal place). Evaluation score +3: Very good compared to the control product. +2: Better than the control product. +1: Slightly better than the control product. 0: Same as control product. -1: Slightly worse than the control product. -2: Poor compared to the control product. -3: Very poor compared to the control product. As a result, the aroma and taste of the products treated according to the present invention were as follows:
As shown in Fig. 3, the aroma, taste, irritation, etc., were the same or slightly better than the control product, but it was found that the texture, relaxing properties, etc. were significantly improved.

[Table] Example 3 The aroma and taste characteristics of the present invention were investigated under the treatment conditions shown in Table 4 using abnormal native cut bones with a nitrate content of 1.25% and a cut width of 0.2 mm. As a result, the flavor quality of the treated product is improved, with the nitrate nitrogen content reduced to 0.4%, as shown in Table 5.

【table】

[Table] The objects and features of the present invention are summarized as follows. (1) The present invention provides a compact puffing method that can be installed in the current space of the core cutting process, which is installed parallel to the deboning and leaf cutting process in general tobacco factories, and improves flavor and flavor. This is the purpose. (2) The present invention can process up to three times as much as the flash drying method when the dryer size, gas volume, inlet gas temperature and humidity, moisture before drying, moisture after drying, etc. are the same as those of the flash drying method. A large amount can be expected. (3) The characteristics of the flavor quality of the processed product according to the present invention are as follows:
This removes the harshness of the mid-ribs, making it more relaxing and easier to smoke.

[Brief explanation of the drawing]

Figure 1 shows the humidity control and drying process, Figures 2 and 3 show the cross section and enlarged view of the drying section, Figures 4 and 5 show the relationship between pre-drying moisture and throughput, and Figure 6 shows the relationship between the moisture content before drying and the throughput. The relationship between moisture content before drying and swelling rate is shown.

Claims (1)

[Claims] 1. The chopped mid-bones with a moisture content of 30 to 60% by weight are supplied to a rotary cylindrical dryer, and a temperature of 140 to 140 is introduced from the lower 1/4 cross-sectional area of the rotary cylindrical dryer. While contacting with air containing water vapor at 200°C and a dew point temperature of 80°C or higher, stirring is carried out by a stirring blade provided on the inner surface of the rotary cylindrical dryer,
A method for swelling and treating chopped mid-bones, which comprises drying the minced mid-bones to a moisture content of 8 to 20% by weight to fix cell tissues.