阅读说明：本技术 一种利用负压调节法去除杂气提升烟叶品质的方法 (Method for removing miscellaneous gas and improving tobacco leaf quality by using negative pressure regulation method ) 是由 龙章德 刘鸿 刘启斌 李季刚 薛云 邹克兴 于 2019-11-08 设计创作，主要内容包括：本发明属于烟草领域,具体涉及一种利用负压调节法处理烟叶,去除烟叶的杂气,提高烟叶的品质和工业可用性的方法。在真空度为0.010-0.098MPa、处理时间为2-60分钟的条件下处理烟叶,通过控制真空度以及处理时间等工艺条件,可以很好地去除烟叶的杂气,提高烟叶的品质和工业可用性。感官评吸结果表明,处理样烟叶在香气量、杂气、透发性、口感以及余味等方面都得到很大的改善,品质和工业可用性显著提升。只能在6元/包以下价位的卷烟配方中使用的烟叶,经过处理后可以在10元/包左右价位的卷烟配方中使用。(The invention belongs to the field of tobacco, and particularly relates to a method for treating tobacco leaves by using a negative pressure regulation method, removing miscellaneous gas of the tobacco leaves and improving the quality and industrial availability of the tobacco leaves. The tobacco leaves are processed under the conditions that the vacuum degree is 0.010-0.098MPa and the processing time is 2-60 minutes, and the impure gas of the tobacco leaves can be well removed by controlling the process conditions such as the vacuum degree, the processing time and the like, so that the quality and the industrial availability of the tobacco leaves are improved. Sensory evaluation results show that the treated tobacco leaves are greatly improved in aspects of aroma amount, miscellaneous gas, penetrability, mouthfeel, aftertaste and the like, and the quality and industrial availability are remarkably improved. The tobacco leaves which can be used in the cigarette formula with the price of less than 6 yuan/package can be used in the cigarette formula with the price of about 10 yuan/package after being processed.)

1. A method for removing miscellaneous gases and improving the quality of tobacco leaves by using a negative pressure regulation method is characterized by comprising the following production steps:

(1) selecting tobacco leaves to be processed according to the quality condition of the tobacco leaves and the requirements of cigarette formulas;

(2) weighing a certain amount of tobacco leaves which are just redried, and cooling to room temperature;

(3) putting the weighed tobacco leaves into a vacuum container, and sealing;

(4) adjusting the vacuum container to reach a preset vacuum degree;

(5) the tobacco leaves are processed for a certain time under the vacuum condition in the step (4);

(6) and boxing and storing the treated tobacco leaves according to the warehousing procedure requirements of the redried tobacco leaves.

2. The method for improving tobacco quality according to claim 1, wherein the moisture content of the tobacco in the step (2) is 12.5 ± 1%.

3. The method for improving the quality of tobacco leaves according to claim 1, wherein the degree of vacuum in the step (4) is 0.010 to 0.098 MPa.

4. The method for improving tobacco quality according to claim 1, wherein the treatment time in the step (4) is 2 to 60 minutes.

5. The method for improving the quality of tobacco leaves according to any one of claims 1 to 4, which is prepared by the following production steps:

(1) selecting tobacco leaves to be processed according to the quality condition of the tobacco leaves and the requirements of cigarette formulas;

(2) weighing a certain amount of freshly redried tobacco leaves, and cooling to room temperature, wherein the moisture content of the tobacco leaves is 12.5 +/-1%;

(3) putting the weighed tobacco leaves into a vacuum container, and sealing;

(4) adjusting the vacuum container to reach a preset vacuum degree of 0.010 MPa;

(5) treating the tobacco leaves in the step (4) for 60 minutes under a vacuum condition;

(6) and boxing and storing the treated tobacco leaves according to the warehousing procedure requirements of the redried tobacco leaves.

6. A method for removing miscellaneous gases and improving the quality of tobacco leaves by using a negative pressure regulation method is characterized by comprising the following production steps:

(1) selecting tobacco leaves to be processed according to the quality condition of the tobacco leaves subjected to storage alcoholization and the formula requirements of cigarettes;

(2) weighing a certain amount of stored alcoholized tobacco leaves needing to be processed;

(3) putting the weighed tobacco leaves into a vacuum container, and sealing;

(4) adjusting the vacuum container to reach a preset vacuum degree;

(5) the tobacco leaves are processed for a certain time under the vacuum condition in the step (4);

(6) the processed tobacco leaves are processed and used according to the quality of the tobacco leaves and the requirements of cigarette formulas.

7. The method for improving the quality of tobacco leaves according to claim 6, wherein the degree of vacuum in the step (4) is 0.010 to 0.098 MPa.

8. The method for improving tobacco quality according to claim 6, wherein the treatment time in the step (4) is 2 to 60 minutes.

9. The method for improving the quality of tobacco leaves according to any one of claims 6 to 8, which is prepared by the following production steps:

(1) selecting tobacco leaves to be processed according to the quality condition of the tobacco leaves subjected to storage alcoholization and the formula requirements of cigarettes;

(2) weighing a certain amount of stored alcoholized tobacco leaves needing to be processed;

(3) putting the weighed tobacco leaves into a vacuum container, and sealing;

(4) adjusting the vacuum container to reach a preset vacuum degree of 0.050 MPa;

(5) treating the tobacco leaves in the step (4) for 12 minutes under a vacuum condition;

(6) the processed tobacco leaves are processed and used according to the quality of the tobacco leaves and the requirements of cigarette formulas.

Technical Field

The invention belongs to the field of tobacco, and particularly relates to a method for treating tobacco leaves by using a negative pressure regulation method, removing miscellaneous gas of the tobacco leaves and improving the quality and industrial availability of the tobacco leaves.

Background

The tobacco raw material is the foundation and guarantee of cigarette industry enterprises. The new tobacco leaves can be used only after being aged (alcoholized), and the aging (alcoholization) can be divided into artificial aging and natural aging. The artificial aging time is short, and the effect is poor; the natural aging time is long, but the effect is good, most of the existing natural aging is adopted, and the fresh tobacco leaves can be used after being placed in a warehouse for natural aging for more than one year. The tobacco leaves which are not aged have prominent green miscellaneous gas and irritation, do not have the characteristic fragrance of the aged tobacco leaves, have monotonous fragrance quality and insufficient fragrance quantity, and can not be directly used for producing cigarettes. During the storage and aging process, various chemical components of the tobacco leaves are changed, for example, nicotine, starch, protein and other substances are degraded and converted, starch is converted into disaccharide and monosaccharide, protein is converted into short peptide and amino acid, the content is gradually reduced, and reducing sugar and amino acid in the tobacco leaves also undergo Maillard reaction to generate various flavor substances. Therefore, after aging, the green miscellaneous gas and the irritation of the tobacco leaves are reduced, the characteristic aroma of the tobacco is exposed, and the usability is obviously improved.

The chemical components and harmony of the tobacco leaves determine the quality of the tobacco leaves and determine the smoke characteristics of the tobacco leaves and products thereof to a great extent. The factors influencing the quality of the tobacco leaves are many, and the tobacco leaves of different varieties, production areas and grades have great difference in quality. Different varieties of tobacco leaves have differences in metabolites accumulated in the growth and development process of different varieties of tobacco plants due to differences among the varieties, and differences also exist in the quality and style characteristics of the tobacco leaves; (II) tobacco leaves in different producing areas have great difference in quality and style characteristics due to great difference in soil, climate, cultivation technology and the like; and (III) the tobacco leaves can be divided into lower leaves, middle leaves and upper leaves according to the growing parts. The lower leaves are generally thin, light in color, loose in tissue, low in oil content, low in total nitrogen and nicotine content, good in combustibility, poor in hygroscopicity, low in fragrant substances and latent fragrant substances, light in taste, low in irritation and foreign flavor, high in peduncle content, and mainly used as filling materials. The leaf slice in the middle part has moderate thickness, orange or lemon color, more oil content, moderate combustibility, stronger hygroscopicity, moderate stem content, good elasticity, mellow taste, sufficient aroma, moderate strength and small irritation and foreign flavor, and is a main raw material for cigarette production. The upper leaves are thick and thick, the color is dark, the identity is loose and compact, the oil content is less than that of the middle leaves, the hygroscopicity is poor, the filling force is medium, the stem content is low, the taste is thick, the strength and the irritation are large, and the quality and the usability are lower than those of the middle tobacco leaves. At present, the upper tobacco leaves are not mature enough and have compact leaf structures, so that the contents of nicotine and starch are high, the internal chemical components are not coordinated, the miscellaneous gas is heavy, the quality of the tobacco leaves is poor, and the use of the formula is not facilitated.

The quality grade and industrial usability of tobacco leaves are generally determined by sensory quality evaluation. The sensory quality evaluation indexes of the tobacco leaves comprise gloss, aroma, harmonicity, miscellaneous gas, irritation, aftertaste and the like. The high-quality tobacco leaves have bright luster, good aroma quality, sufficient aroma amount, good smoke harmony, less miscellaneous gas, small irritation and clean aftertaste; poor quality tobacco leaves are characterized by dark color, no luster, poor aroma quality, less aroma amount, poor smoke harmony, heavy miscellaneous gas, large irritation, unclean aftertaste, residual oral cavity and the like. The proportion of the high-quality tobacco leaves in the tobacco leaves is small, and most of the tobacco leaves have the problems of fragrance, harmony, mixed gas irritation, aftertaste and the like. Among them, miscellaneous gases have a great influence on the quality and industrial availability of tobacco leaves. Tobacco leaves with heavy impure gases can only be used in low-grade cigarette formulas below 6 yuan/package price, and a small amount of impure gases are removed by increasing the cut tobacco drying temperature in the cut tobacco drying process in the cigarette processing process, but the problem of impure gases of cigarettes cannot be effectively solved. At present, the problem of miscellaneous gas of tobacco leaves is not solved well, only the miscellaneous gas of the tobacco leaves can be partially removed through long-time storage aging, and even if the tobacco leaves in a part of production places and grades are subjected to long-time storage aging, the problems of heavy miscellaneous gas, poor industrial availability and the like still exist, so that the tobacco leaves are difficult to be used in a formula, and a large amount of overstocked tobacco leaves are caused.

Disclosure of Invention

The invention aims to provide a method for treating tobacco leaves by using a negative pressure regulation method, removing impure gas of the tobacco leaves and improving the quality and industrial availability of the tobacco leaves by controlling process conditions such as vacuum degree, treatment time and the like.

Embodiments of the present invention include the following process steps:

treatment of primary and secondary flue-cured tobacco leaves

1. Selecting the tobacco leaves to be processed according to the quality condition of the tobacco leaves.

2. Weighing a certain amount of freshly redried tobacco leaves, and cooling to room temperature, wherein the moisture content of the tobacco leaves is 12.5 +/-1%;

3. putting the weighed tobacco leaves into a vacuum cabinet or a vacuum tank and sealing;

4. starting a vacuum pump at room temperature, wherein the vacuum degree of a vacuum cabinet or a vacuum tank is 0.010-0.098 MPa; preferably 0.010 MPa; (ii) a

5. Treating the tobacco leaves for 2-60 minutes under the condition of a certain vacuum degree; preferably 60 minutes;

6. and (4) boxing and storing the treated tobacco leaves according to a boxing process of the redried tobacco leaves.

Second, treatment of tobacco leaves after storage alcoholization

1. Selecting the tobacco leaves to be processed according to the quality condition of the tobacco leaves subjected to storage alcoholization and the formula requirements of the cigarettes.

2. Weighing a certain amount of stored alcoholized tobacco leaves needing to be processed;

3. putting the weighed tobacco leaves into a vacuum cabinet or a vacuum tank, and sealing;

4. starting a vacuum pump at room temperature, wherein the vacuum degree of a vacuum cabinet or a vacuum tank is 0.010-0.098 MPa; preferably 0.050 MPa;

5. treating the tobacco leaves for 2-60 minutes under the condition of a certain vacuum degree; preferably 12 minutes;

6. the processed tobacco leaves are processed and used according to the quality of the tobacco leaves and the requirements of cigarette formulas.

The invention provides a method for treating tobacco leaves by using a negative pressure regulation method, which can effectively remove the impure gas of the tobacco leaves, improve the quality and the industrial availability of the tobacco leaves and well solve the problem of the impure gas of the tobacco leaves by controlling the process conditions such as vacuum degree, treatment time and the like. The invention can be applied in two stages: 1. treating the redried tobacco leaves by using a negative pressure regulation method before boxing after redrying, and then boxing and warehousing; 2. before processing and using, the tobacco leaves after storage and aging are treated by a negative pressure adjusting method, and then the tobacco leaves are fed and processed for use. After the tobacco leaves are treated, the miscellaneous gas is basically removed, and the quality and the industrial availability of the tobacco leaves are greatly improved. In addition, the invention has simple process technology and low cost, and is easy to realize industrialization, popularization and application.

Detailed Description

The present application is further illustrated by the following examples.

Treatment of primary and secondary flue-cured tobacco leaves