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Baking process for upper leaf box type curing barn of flue-cured tobacco

A baking process and box-type technology, applied in the field of flue-cured tobacco, can solve the problems of easily spoiled tobacco leaves, moderate and small tobacco leaves, and small proportion of high-quality tobacco, so as to prolong the baking time, promote full conversion, and increase the total nicotine content. reduced effect

Pending Publication Date: 2022-07-12
SHANDONG WEIFANG TOBACCO CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] (1) The chemical composition transformation of the existing upper leaf baking process is insufficient, and the aroma is seriously lost;
[0009] (2) The quality of tobacco leaves produced by the existing upper leaf curing process is poor, the proportion of high-quality tobac

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] (1) Loading cigarettes before baking

[0040] Packing capacity: fresh-dry ratio>7,530kg / box; fresh-dry ratio 6-7,560kg / box; fresh-dry ratio<6,600kg / box.

[0041] (2) Baking in the yellowing stage

[0042] a. Early stage of yellowing

[0043] After 1 hour of ignition, the dry bulb temperature rose to 36 °C, the wet bulb temperature rose to 36 °C, the temperature was stabilized for 2 hours, and then the temperature was increased for 2 hours. Keep the temperature stable for 28 hours, at this time, the second-layer tobacco leaves are 60% yellow, the observation window has water droplets, the leaves are hot, and the tips of the leaves are slightly soft;

[0044] b. The middle stage of yellowing

[0045] After heating for 2 hours, the dry bulb temperature was raised from 38°C to 40°C, the wet bulb temperature was raised from 37.5°C to 38°C, the temperature was stabilized for 6 hours, and then the dry bulb temperature was kept at 40°C, and the temperature was lowered for 2 ...

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Abstract

The invention discloses a flue-cured tobacco upper leaf box type flue-curing barn flue-curing process. The flue-cured tobacco upper leaf box type flue-curing barn flue-curing process comprises the steps of tobacco loading before flue-curing, yellowing stage flue-curing, color fixing stage flue-curing and stem drying stage flue-curing. According to the baking process, the baking time in the yellowing period is prolonged, full conversion of substances contained in the middle leaves is promoted, the total nicotine amount is reduced, the total sugar and reducing sugar are increased, the ratio of the nicotine to the reducing sugar is more reasonable, the ratio of the nicotine to the reducing sugar is 2.4-2.5%, the total sugar content is 27-28%, the ratio of the nicotine to the reducing sugar is 21-22%, the ratio of the nicotine to the reducing sugar is 0.75-0.80, and the ratio of the reducing sugar to the reducing sugar is 11.50-11.60; according to the baking process, the loose degree of the baked middle leaves is improved, the loose tobacco leaf proportion is 84%-85%, and the moderate tobacco leaf proportion is 89%-90%.

Description

technical field [0001] The invention relates to a roasting process of a flue-cured tobacco upper leaf box-type oven, belonging to the technical field of flue-cured tobacco. Background technique [0002] In recent years, with the economic and social development and the adjustment of the rural industrial structure, the hollowing out of the tobacco areas and the aging of farmers have become increasingly prominent. Tobacco production, especially in the process of picking, roasting and grading, faces difficulties in hiring, expensive and labor-intensive problems. The use of box roasting in the roasting process has become the development direction of tobacco production in the future. [0003] However, due to the difference in the way of loading tobacco in the traditional intensive roasting house and the box roasting house, the accumulation state of fresh tobacco leaves in the roasting house is different. Therefore, the traditional intensive roasting house process can no longer sat...

Claims

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Application Information

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IPC IPC(8): A24B1/02A24B3/10A24B3/04
CPCA24B1/02A24B3/10A24B3/04
Inventor 张成双王桂荣王刚王先伟刘志刚王玉华赵清海苗壮蒋中林李泽洲张旭
Owner SHANDONG WEIFANG TOBACCO CO LTD
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