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Tobacco extraction method based on steam explosion

A technology of tobacco extract and pectin, which is applied in the fields of tobacco, tobacco processing, food science, etc., can solve environmental problems such as harmfulness, and achieve the effects of saving time, less pollution, and complete passivation

Inactive 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

In addition to pectin, there are few studies on the extraction methods of cellulose, hemicellulose and lignin in tobacco, and the extraction reagents involved are harmful to the environment

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] Example 1 Preparation of Tobacco Extract

[0035] 10g of tobacco is crushed to obtain powder, soaked in deionized water equivalent to 10 times the volume of powder for 8 hours, and steam exploded for 60 seconds under a pressure of 0.04Mpa to obtain tobacco extract; extraction of tobacco hemicellulose: use HCL adjusts the filtrate pH value to 3.0, centrifuges, the residue is hemicellulose; the suspension after centrifugation is precipitated and centrifuged with ethanol with a volume fraction of 95%, the residue is hemicellulose, and the hemicellulose obtained is combined twice; steam explosion The dried tobacco residue is used to extract pectin.

Embodiment 2

[0036] Example 2 Preparation of Tobacco Extract

[0037] Grind 10g of tobacco to obtain powder, soak it in an aqueous medium equivalent to 30 times the volume of the powder for 8 hours, and use steam explosion for 180 seconds under the pressure of 0.3Mpa to obtain tobacco extract; extraction of tobacco hemicellulose: use HCL Adjust the pH value of the filtrate to 5.0, centrifuge, and the residue is hemicellulose; the suspension after centrifugation is precipitated and centrifuged with ethanol with a volume fraction of 95%, and the residue is hemicellulose, and the hemicellulose is combined twice; after steam explosion drying, Smoke residue is used to extract pectin.

Embodiment 3

[0038] Example 3 Extraction of pectin by ethanol extraction

[0039]The ethanol extraction method extracts pectin, is divided into 3 groups altogether, the raw material of the first group is the tobacco extract obtained in embodiment 1, the raw material of the second group is the tobacco extract obtained in embodiment 2, and the preparation method of the third group is: 10g of tobacco was pulverized to obtain powder, soaked in boiling water equivalent to 10 times the volume of the powder for 8 hours to obtain tobacco extract; extraction of tobacco hemicellulose: adjust the pH value of the filtrate to 4.0 with HCL, centrifuge, and the residue is hemicellulose; centrifuge The final suspension was precipitated and centrifuged with ethanol with a volume fraction of 95%, the residue was hemicellulose, and the hemicellulose was combined twice.

[0040] The specific steps of the ethanol extraction method are: respectively filter the three groups of tobacco extracts, collect the fil...

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Abstract

The invention relates to a chemical extraction technology, and especially relates to a method for extracting pectin from tobacco. The method comprises specific steps that: tobacco is crushed, such that tobacco powder is obtained; the tobacco powder is soaked by using water for at least 8 hours, and is processed through steam explosion for at least 60 seconds under a pressure of 0.04 to 0.3Mpa, such that a tobacco extract is obtained; an acid is added to the tobacco extract, and a pH value of the solution is regulated to 1.0 to 3.0; the solution is completely hydrolyzed under a temperature of 70 to 90 DEG C; residues are removed, such that a hydrolysate is obtained; the hydrolysate obtained in the step A is precipitated by using a ethanol precipitation method, and the obtained precipitate is pectin. Compared to a traditional method wherein a tobacco material is boiled by using boiled water, and wherein pectinase is passivated, the tobacco extract preparation method provided by the invention is advantaged in low pollution, low energy consumption, and complete pectinase passivation. With themethod provided by the invention, 1 hour can be saved, and the yield of pectin can reach approximately 12.2%, which is increased by 3.2% comparing to that of a traditional ethanol extraction method. Meanwhile, the color of the obtained pectin is good.

Description

technical field [0001] The invention relates to chemical process extraction, in particular to a method for extracting compounds from tobacco. Background technique [0002] Tobacco refers to the discarded tobacco leaves and tobacco stems in the tobacco production process, and tobacco generally accounts for 15-20% of the total raw tobacco leaves. my country is a big tobacco country, and hundreds of thousands of tons of tobacco stem resources are discarded every year, which not only causes environmental pollution, but also wastes natural resources. A lot of research has been done on the comprehensive utilization of tobacco, such as extracting and separating spices, nicotine, protein and organic acids from tobacco leaves, which has opened up broad prospects for the comprehensive utilization of tobacco. Pectin is a unique component of plant cell walls. It is a hydrophilic colloid substance with D-galacturonan as its basic structure. The penetration of pectin absorbs water and a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08B37/06C08B37/14D21C5/00C08H7/00A24B15/24A24B15/18
Inventor 王远亮陈奎曾国明张健荣魏小娅陈峰王又民洪亮
Owner CHONGQING HENGYUAN JINTONG TECH
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