A Subcritical Back Extraction Method of Tobacco Essential Fragrance Components

A subcritical extraction technology, which is applied in the direction of essential oil/fragrance, fat production, etc., can solve the problems of large equipment investment, high extraction temperature, and poor effect, and achieve the effect of low equipment investment, low pressure, and simple process

Active Publication Date: 2020-08-28
CHINA TOBACCO HENAN IND +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The common disadvantages of these methods are that the extraction temperature is higher, the time is longer, the aroma of the extract is lost, and the effect is poor; supercritical CO 2 Although the extraction method and molecular distillation method have less aroma loss and good extraction effect, they are difficult to industrialize due to large equipment investment and high operating costs.

Method used

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  • A Subcritical Back Extraction Method of Tobacco Essential Fragrance Components
  • A Subcritical Back Extraction Method of Tobacco Essential Fragrance Components
  • A Subcritical Back Extraction Method of Tobacco Essential Fragrance Components

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026]Take 500 g of Guizhou C1B1 low-grade tobacco leaves with a moisture content of less than 10%, moisten the dried tobacco leaves with 25% water by weight, seal and let stand for 40 min, and then conduct microwave treatment; the microwave conditions are power 800 W, microwave time 30 s, Repeat twice with an interval of 10 s between each time. After microwave treatment, place it in the extraction tank, vacuumize the extraction tank to -100 kPa, and inject 7.5 L of subcritical fluid butane into the extraction tank as the extraction solvent, and the sample is completely Submerge, add 800 ml of ethanol solution with a concentration of 75% entrainer for extraction, extract once for 10 minutes, at a temperature of 30°C and a pressure of 0.1 MPa; and liquid solvent were subjected to constant temperature precipitating treatment at a temperature of 30°C, and the tobacco leaf extract was obtained after the liquid solvent was precipitated; the obtained tobacco leaf extract was heated b...

Embodiment 2

[0034] Take 30 g of Zimbabwean tobacco leaves with a water content less than 10% and put them in the extraction tank, and take 500 g of Chongqing blended CXK low-grade tobacco leaves and put them in the reverse extraction tank. The cell walls of the two types of tobacco leaves are broken by ultrasonic waves. , the dried tobacco leaves were wetted with 300% water by weight, sealed and allowed to stand for 60 minutes, and then subjected to ultrasonic treatment; the ultrasonic conditions were power 500 W, time 60 minutes.

[0035] Use a vacuum pump to make the extraction tank and reverse extraction tank meet the vacuum requirements, and inject the subcritical fluid dimethyl ether into the extraction tank for subcritical extraction. The dimethyl ether completely submerges the Zimbabwean tobacco leaves. The mass volume of the Zimbabwean tobacco leaves and dimethyl ether The ratio is 1:20, the entrainer used for extraction is 60 ml of ethanol solution with a concentration of 95%, the...

Embodiment 3

[0043] Take 10 g of Brazilian tobacco leaf extract and put it in the extraction tank, and put 200 g of Henan BK31 tobacco leaves in the reverse extraction tank. 25% water, sealed and allowed to stand for 40 minutes before terahertz treatment; the terahertz treatment conditions were temperature 30°C, distance 10cm, and time 10 minutes.

[0044] Use a vacuum pump to make the extraction tank and reverse extraction tank meet the vacuum requirements, and inject the subcritical fluid propane for extraction into the extraction tank. The propane completely submerges the Brazilian tobacco leaf extract, and the mass volume ratio of the Brazilian tobacco leaf extract and propane is 1:25 g / ml, the entrainer is 20 ml of 95% ethanol solution, the extraction time is 10 minutes, the temperature is 35°C, the pressure is 0.53 MPa, and the extraction is repeated 3 times; The paste and the liquid solvent were subjected to constant temperature precipitating treatment at a temperature of 35°C, and...

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Abstract

The invention relates to the field of extraction and reverse extraction, and concretely relates to a subcritical reverse extraction method of a tobacco original flavor component, having a simple process and having no destroys to the activity or the structure of tobacco flavor components. The method comprises the following steps: 1, carrying out preprocessing, drying and cell wall breaking; 2, extracting: placing preprocessed tobacco leaves in a closed extraction tank, injecting a subcritical fluid as an extraction solvent, and carrying out extraction under certain extraction conditions to obtain tobacco leaf extract; 3, removing impurities to obtain purified tobacco leaf extract; and 4, reversely extracting: placing the purified tobacco leaf extract and tobacco leaves to be reversely extracted in a subcritical reverse extraction tank, injecting the subcritical fluid as a reverse extraction agent, and carrying out reverse extraction under certain reverse extraction conditions in order to obtain quality improved tobacco leaves. The tobacco leaves obtained through reverse extraction have stable quality, and have very ideal quality improvement.

Description

technical field [0001] The invention relates to the field of extraction and back-extraction, in particular to a subcritical back-extraction method of tobacco aroma components which has a simple process and does not damage the activity of tobacco aroma components and the structure of materials. Background technique [0002] There are many chemical components in tobacco. Since the 1970s, due to the development of analytical testing techniques, chemical components in tobacco have been continuously discovered. Shi Hongzhi et al. reported in 2011 that there were 4,992 identified tobacco chemical components, of which there were more than 700 components related to tobacco aroma, which contributed the most to the sensory quality of cigarettes. The molecules of aromatizing substances in tobacco contain specific aromatizing functional groups such as -OH, -CO, -NH and -SH, which can give people different stimuli to the sense of smell and make people feel different aromas. According to...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C11B9/00
CPCC11B9/00
Inventor 田海英董艳娟马宇平谷令彪庞会利秦广雍
Owner CHINA TOBACCO HENAN IND
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