Intensive curing room with net-type cigarette frame and continuous heating method for roasting fragrant roasting and soft roasting
A technology of intensive roasting room and roasting method, which is applied in the directions of tobacco, tobacco preparation, application, etc., can solve problems such as unfavorable roasting, soft roasting, roasting of tobacco leaves, long duration of temperature stabilization stage, and less aroma-causing substances, etc. problems, to improve the baking quality and industrial availability, the baking process is concise and to the point, and the effect of consolidating the quality
Active Publication Date: 2018-04-03
UNIV OF SCI & TECH OF CHINA +1
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[0005] (2) The duration of the temperature stabilization stage is too long, generally at 34°C for 10 hours or more, at 38°C for 18 hours or more, at 54°C for 12 hours or more, etc. quality
Therefore, the temperature and humidity displayed by the controller can only represent the baking process conditions of the tobacco leaves in the shed where the main control sensor is placed. The process is suitable, and often the curing process of tobacco leaves in other sheds is not suitable or not suitable, generally because the temperature is low and the relative humidity is high
If the duration of the temperature stabilization period is too long, it is actually not conducive to the quality modulation of tobacco leaves in other sheds. For example, if the temperature stabilization time is too long at 34°C and 38°C, the temperature of tobacco leaves in other sheds is lower, and the activity of enzymes such as hydrolytic enzymes will be reduced. The degradation rate of internal macromolecular substances such as starch, protein, chlorophyll, etc. is relatively slow, which is not conducive to their full or proper degradation. Beyond the temperature and humidity range suitable for the degradation and conversion of macromolecular substances, due to the higher temperature and lower humidity, more free water in the tobacco leaves will be vaporized and discharged, resulting in lower moisture content in the tobacco leaves, and the activity of hydrolytic enzymes will be inhibited, and there will be no It is conducive to the full or proper degradation and transformation of macromolecular substances, and the amount of small molecular substances such as amino acids, monosaccharides and other aroma-generating substances and aroma precursors produced is insufficient, resulting in insufficient aroma of some tobacco leaves after roasting, and the structure is stiff and not loose. , not soft
In addition, although a longer temperature stabilization at 54 °C is beneficial to the production of more aromatizing substances in the tobacco leaves in the shed where the main control sensor is located, but the tobacco leaves in other sheds have lower temperatures and produce less aromatizing substances. Fast, soon passed the temperature stage suitable for the formation of aroma substances
It can be seen that the duration of the stable temperature stage is too long, which is not conducive to the quality modulation of tobacco leaves in other sheds, that is, it cannot ensure that the tobacco leaves on the kang are fragrant, soft and cooked.
[0006] (3) The dry-wet difference in the yellowing stage, especially the early yellowing stage and the mid-yellowing stage, is relatively large. When the dry bulb temperature is 38°C, the wet bulb temperature is about 36°C, and when the dry bulb temperature is 40°C, the wet bulb temperature is At around 37°C, the tobacco leaves will lose more free water, which will affect the activity of hydrolytic enzymes and other enzymes, which is not conducive to the degradation and transformation of macromolecular substances, and is not conducive to the full yellowing of tobacco leaves, which is not conducive to the roasting of tobacco leaves.
[0007] (4) These stepped heating and baking processes cannot meet the needs of all tobacco loading methods for roasting fragrant and soft-cured tobacco leaves
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[0028]Provides a method for roasting tobacco in a grid-type frame in a dense barn with continuous heating up for fragrant roasting and soft roasting, including the following steps:
[0029] (1) Use a net-type smoke-loading frame (see ZL 201220076704.3 and ZL 201230045662.2) to load smoke. Open the net-type cigarette box, support three sides of it on the ground in a "┗┛" shape, align the bases of the main veins of the ripe harvested tobacco leaves, and lay them neatly and evenly inside the cigarette frame, with the bases of the main veins higher than the tobacco leaves The bottom of the frame is about 2cm; the amount of cigarettes in each frame should be filled naturally and the frame does not bulge; then turn the fourth side of the cigarette frame up and cover it, and fix it with the first side; then put the cigarette The frame is erected, and two ∪-shaped sticks are inserted horizontally, horizontally, and in a cross shape at 15-20 cm below the tip of the tobacco leaf to fix ...
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The invention discloses a method for continuously heating up and roasting tobacco in a net-type tobacco frame in a dense barn, which adopts a net-type tobacco frame to pack tobacco, and the amount of smoke is 4500-5500kg; Setup and execution; remoisture and smoke release after yellowing, color setting and dry tendon periods. The present invention adopts the technology of "moisturizing and turning yellow, slowly fixing the color, slowly and continuously heating up, and dynamic changes in temperature and humidity". The total amount of ingredients increased by 13.5% on average, the amount of smooth smoke decreased by 56.2% on average, and the proportion of high-grade smoke increased by 17.8% on average.
Description
technical field [0001] The invention relates to a method for continuously raising the temperature of tobacco framed in a grid-type tobacco frame in a dense curing room, and belongs to the technical field of tobacco leaf curing. Background technique [0002] Tobacco leaf curing is inseparable from the baking process. The curing process is the specific requirements and control technology for variables such as dry bulb temperature, wet bulb humidity, and curing time during the tobacco leaf curing process. At present, the tobacco leaf curing process applied in the grid-type tobacco frame packing method in dense curing rooms, such as the three-stage curing process and the six-step curing method, all adopt a stepwise heating method, that is, there are multiple heating stages and stable temperature stages. , generally the heating period is shorter, and the temperature stabilization period is longer. There are following problems in the practice of tobacco leaf curing in these step...
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IPC IPC(8): A24B3/10
CPCA24B3/10
Inventor徐增汉李章海宋泽民罗红香龙庆祥叶江平周为华王茂贤苏祥云朱英华李红卫陈飞飞王定强苟军梁正航刘大双张翔
OwnerUNIV OF SCI & TECH OF CHINA