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Tobacco-based pectin extraction method

A pectin extraction and tobacco technology, applied in the field of pectin extraction, can solve the problems of low pectin yield and pectin degradation, and achieve high pectin release rate, time saving and good color

Active Publication Date: 2011-11-30
CHONGQING HENGYUAN JINTONG TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

, the volume ratio of pectin solution to absolute ethanol solution is 1:1-2:3; but the yield of pectin in this method is low, and it is easy to degrade pectin due to improper pH control

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Example 1 Extraction of pectin by ethanol extraction

[0027] Grind 10g of tobacco into 20-mesh powder, dry, screen and remove impurities, add 10 times the amount of powder and soak in room temperature water for 1.5 hours to obtain tobacco liquid, filter and collect the filter residue in tobacco liquid, and then put in 95% ethanol Boil in the solution for 10 minutes to kill the pectinase, filter, and dry at 80°C for 8 hours, add deionized water equivalent to 10 times the volume of the filter residue in the dried filter residue, adjust the pH value to 1.0 with hydrochloric acid, and Under the condition of 70°C, fully carry out the hydrolysis reaction for 120 minutes, remove the residue, and obtain the hydrolyzate. The hydrolyzate was adsorbed and decolorized with 3% activated carbon for 60 minutes, and the decolorization temperature was 50°C. Concentrate the hydrolyzate after activated carbon adsorption and decolorization to 15% of the original volume of the hydrolyzat...

Embodiment 2

[0028] Example 2 One-step ultrasonic extraction of pectin

[0029] Grind 10g of tobacco into 20-mesh powder, dry, screen, and remove impurities, add 10 times the amount of normal temperature water equivalent to the powder, and perform ultrasonic pretreatment to obtain tobacco liquid. Ultrasonic power is 20kHz, and then washed with deionized water filter and collect the filter residue in the tobacco liquid, dry at 80°C for 8 hours, add deionized water equivalent to 10 times the volume of the filter residue in the dried filter residue, adjust the pH value to 1.0 with hydrochloric acid, and fully Carry out the hydrolysis reaction for 60 minutes, remove the residue, and obtain the hydrolyzate. The hydrolyzate was adsorbed and decolorized with 3% activated carbon for 60 minutes, and the decolorization temperature was 50°C. Concentrate the hydrolyzate after activated carbon adsorption and decolorization to 15% of the original volume of the hydrolyzate with a rotary evaporator at ...

Embodiment 4

[0030] Example 4 Two-step ultrasonic extraction of pectin

[0031] Grind 10g of tobacco into 20-mesh powder, dry, screen, and remove impurities, add 10 times the amount of normal temperature water equivalent to the powder, and perform ultrasonic pretreatment to obtain tobacco liquid. Ultrasonic power is 20kHz, and then washed with deionized water Filter and collect the filter residue in the tobacco liquid, dry it at 80°C for 8 hours, add deionized water equivalent to 10 times the volume of the filter residue in the dried filter residue, adjust the pH value to 1.0 with hydrochloric acid, and use it at an ultrasonic power of 10kHz and a temperature of Under the condition of 70°C, fully carry out the hydrolysis reaction for 30 minutes, remove the residue, and obtain the hydrolyzate. The hydrolyzate was adsorbed and decolorized with 3% activated carbon for 60 minutes, and the decolorization temperature was 50°C. Concentrate the hydrolyzed solution after decolorization by activa...

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PUM

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Abstract

The invention relates to a chemical extraction process and particularly relates to a method for extracting pectin from tobacco. The method comprises the following specific steps: crushing tobacco into tobacco powder, and ultrasonically pre-treating the tobacco powder in an aqueous medium to obtain a tobacco waste residue liquid, wherein the ultrasonic power is not less than 20 kHz and the pre-treating time is not less than 20 minutes; and adding an acid to the tobacco waste residue liquid for adjusting the pH value to 1.0-3.0, carrying out full hydrolysis reaction under the conditions of ultrasonic power not less than 10 kHz and the temperature of 70-90 DEG C to remove residues and obtain a hydrolysis liquid, concentrating the hydrolysis liquid to 10-20% of the volume of the hydrolysis liquid so as to obtain a concentrated liquid, and precipitating the concentrated liquid through an ethanol precipitation method to obtain pectin precipitate. The method is simple to operate and is suitable for mass production; and the obtained pectin has high yield and good color.

Description

technical field [0001] The invention relates to chemical process extraction, in particular to a method for extracting pectin from tobacco. Background technique [0002] Tobacco refers to the discarded tobacco stems and moldy tobacco leaves during the tobacco production process. 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. The comprehensive utilization of tobacco has been studied a lot, such as extracting and separating spices, nicotine, protein and organic acids from tobacco leaves, which has opened up a broad prospect 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 affects t...

Claims

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Application Information

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IPC IPC(8): C08B37/06C12S3/02
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