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Stem explosion-based continuous extraction method for tobacco

An extraction method and steam technology, applied in the fields of tobacco, tobacco processing, food science, etc., can solve problems such as backward process conditions, high product cost, and low comprehensive utilization efficiency

Active Publication Date: 2012-03-28
CHONGQING HENGYUAN JINTONG TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the backward technological conditions and high product costs, the market competitiveness is not high and the comprehensive utilization efficiency is low.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Embodiment 1 The method of steam explosion pretreatment tobacco

[0028] Method 1: crush 100 g of dried tobacco material into a particle size of 20 meshes, add an aqueous medium equivalent to 10 times the volume of the tobacco material and soak for 8 hours, and perform steam explosion pretreatment to obtain steam explosion pretreatment liquid 1; The pressure of the steam explosion pretreatment is 0.04MPa, and the pretreatment time is 60 seconds.

[0029] Method 2: crush 100 g of dried tobacco material into a particle size of 20 meshes, add an aqueous medium equivalent to 30 times the volume of the tobacco material, soak for no less than 12 hours, and perform steam explosion pretreatment to obtain a steam explosion pretreatment liquid 2. The pressure of the steam explosion pretreatment is not lower than 0.3 MPa, and the pretreatment time is not lower than 180 seconds.

[0030] Method 3: Crush 100g of dried tobacco material into a particle size of 20 meshes, add an aque...

Embodiment 2

[0031] Embodiment 2 The method for continuously extracting pectin, hemicellulose, cellulose, lignin from tobacco

[0032] This test is divided into 3 groups altogether, and the first group is to carry out pectin, hemicellulose, cellulose, lignin with the steam explosion pretreatment liquid 1 prepared by method 1 in embodiment 1 as raw material; The steam explosion pretreatment liquid 2 prepared by method 2 in example 1 is that raw material carries out pectin, hemicellulose, cellulose, lignin; the third group is that the steam explosion pretreatment liquid 3 prepared by method 3 in embodiment 1 is raw material Carry out pectin, hemicellulose, cellulose, lignin.

[0033] [0022] The steps and results of the extraction method are as follows:

[0034] 1 Extraction of hemicellulose

[0035] Adjust the pH value of the steam explosion pretreatment liquid to 3 with acid. After the solid precipitation is completely produced, separate the liquid from the solid, and collect the raf...

Embodiment 3

[0046] Embodiment 3 continuously extracts the method for pectin, hemicellulose, cellulose, lignin from tobacco

[0047] This test is divided into 3 groups altogether, and the first group is to carry out pectin, hemicellulose, cellulose, lignin with the steam explosion pretreatment liquid 1 prepared by method 1 in embodiment 1 as raw material; The steam explosion pretreatment liquid 2 prepared by method 2 in example 1 is that raw material carries out pectin, hemicellulose, cellulose, lignin; the third group is that the steam explosion pretreatment liquid 3 prepared by method 3 in embodiment 1 is raw material Carry out pectin, hemicellulose, cellulose, lignin.

[0048] [0031] 1 Extraction of hemicellulose

[0049] Adjust the pH value of the obtained steam explosion pretreatment liquid to 5 with acid. After the solid precipitation is completely produced, the liquid-solid separation is carried out, the raffinate and solid precipitate are collected, and the raffinate is preci...

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Abstract

The invention relates to the field of chemical industry, in particular to utilization of tobacco. The method comprises the following steps of: crushing dried tobacco powder into powder with grain diameter of not less than 20 meshes; adding water medium in an amount which is equivalently 10-30 times the volume of the tobacco powder to fully soak; performing steam explosion pretreatment to obtain steam explosion pretreatment solution, wherein pressure of the steam explosion pretreatment is not less than 0.04MPa, and the pretreatment time is not less than 60 seconds; and extracting hemicellulose, pectin, cellulose and lignin sequentially and respectively. By using the method, the yield of the hemicellulose reaches up to 90.7 percent, the yield of the pectin reaches up to 12.3 percent, the yield of the cellulose reaches up to 93.6 percent, and the yield of the lignin reaches up to 90.9 percent; and the substances can be continuously extracted.

Description

technical field [0001] The invention relates to the field of chemical industry, in particular to the utilization of tobacco. Background technique [0002] my country is a big tobacco producing country, not only in the storage and transportation of tobacco leaves and in the process of cigarette production, a large amount of tobacco waste such as tobacco dust, tobacco residue, tobacco stems, polluted or moldy tobacco leaves are produced, but also the low-grade tobacco leaves that tobacco farmers discard in the fields every year The number is huge. Tobacco leaves contain a variety of valuable chemical components. If they are used comprehensively, it will not only improve the pollution of waste to the environment, but also create wealth for the country. However, due to the backward technological conditions and high product cost, the market competitiveness is not high and the comprehensive utilization efficiency is low. Contents of the invention [0003] The object of the pres...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08B37/14C08B37/06D21C5/00C08H7/00A24B15/24A24B15/18
Inventor 王远亮陈奎曾国明张健荣魏小娅吴晔晨安来强刘元九
Owner CHONGQING HENGYUAN JINTONG TECH
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