Precision five-phase quintuple-correspondence roasting bulk-curing process for tobacco

Abstract

The invention discloses a precision five-phase quintuple-correspondence roasting bulk-curing process for tobacco. According to appearance characteristic change and internal substance transformation characteristics in the process of tobacco flue-curing and by operating automatic control equipment for a bulk curing barn, the process of bulk curing is divided into a tobacco leaf yellowing phase, a tobacco leaf withering phase, a tobacco leaf vein yelling phase, a tobacco leaf drying phase and a tobacco leaf vein drying phase. Each phase includes a process of temperature rise and a process of stable temperature. The formed five phases correspond to dry-wet bulb temperature and tobacco leaf change. Five phases of the dry-wet bulb temperature strictly correspond to indexes of the tobacco leaf change. The time of stable temperature is flexibly adjusted to meet the indexes of the tobacco leaf change. Fire and fan rotation speed are operated and adjusted according to the dry-wet bulb temperature set via a temperature-humidity controller. The leaf appearance change characteristics and the leaf internal transformation degree in the process of bulk curing are combined with the flue-curing operation technique, so that the process of bulk curing is precise in operation, and hierarchical organization, oil content and fragrance quality of tobacco leaves subjected to bulk curing are improved evidently.

Description

technical field [0001] The invention belongs to the technical field of flue-cured tobacco preparation, and in particular relates to a precise process for densely roasting tobacco leaves with five sections and five corresponding to the roasted aroma. Background technique [0002] Tobacco production in my country is changing from traditional tobacco production to modern tobacco agriculture, and the intensive curing barn has promoted the overall level of large-scale tobacco production. With the popularization and application of intensive baking rooms in my country, the parameters of baking equipment have been basically finalized and unified. However, the three-stage baking technology of ordinary baking rooms is still used in the production of intensive baking room at present, and the technical advantages of dense drying rooms cannot be fully utilized. The physiological and biochemical changes of tobacco leaves and the conversion and accumulation of internal substances in the cu...

AI Technical Summary

Problems solved by technology

[0006] In order to overcome the technical defects that the existing tobacco leaf curing process is not strong in operability, affects the physiological and biochemical changes of tobacco leaves, and the tobacco leaves are easy to hang ash, insufficient oil content, and light color after curing, the present invention is based on five The appropriate temperature and humidity parameters and time range required for the physiological and biochemical changes and material transformation of tobacco leaves at the critical stage are strictly corresponding to the change indicators of tobacco leaf appearance characteristics, and the size of the fire and the speed of the fan are controlled by the dry and wet bulb temperature set by the temperature and humidity controller. , to provide a five-stage five-corresponding to the precise roasting process of intensive roasting to improve the precise cooperation between the transformation target of the internal substance of the tobacco leaf and the operation of the roasting equipment in the key stage of the intensive roasting process, so as to achieve the goal of changing slices, withering, and changing Tobacco leaves at the rib stage promote the transformation and decomposition of macromolecular substances such as starch, pigment, and protein in the direction of quality formation in the range of suitable temperature and relative humidity, gradually accumulate more aroma prerequisite substances, and the tobacco leaves at the dry sheet stage produce aroma Substances are gradually condensed and formed to increase. On the basis of drying the tobacco leaves in the dry tendon stage, the volatilization of aroma substances is reduced, and the oil content, color and taste of the tobacco leaves after roasting are improved.

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