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The co2 Extraction Process of 4 Extracts of Tobacco

Four extracts of tobacco

Tobacco is produced from dried tobacco leaves which arrive in different forms such as pipe tobacco, chewing tobacco, cigarettes, cigars, snuff, and flavored shisha.
Through modern extraction technology, we can extract very effective components from tobacco, such as the following four:

  • Nicotine;
  • Tobacco essential oil;
  • Solanesol;
  • natural flavors and fragrances.


Nicotine, also known as nicotine, is a unique alkaloid in tobacco. Its chemical name is 1-methyl-2 (3′-pyridyl) pyrrolidine, its molecular formula is C10H14N2, and its relative molecular mass is 162. It is a heterocyclic compound containing helium.

Although nicotine is highly toxic, it is widely used in the chemical industry, pesticides, and medicine. Nicotine acts on the central neurotransmitter system through its receptors, increasing the release of dopamine, and thus has a protective effect on the pathogenesis of Parkinson’s disease. At the same time, nicotine is used as an intermediate raw material for the treatment of cardiovascular, skin, snake venom bite, and other diseases. The demand is increasing, especially for high-purity natural nicotine, which has become one of the most sought-after products on the international market.

Tobacco essential oil

Tobacco CO2 Essential Oil is extracted from the leaves of tobacco by CO2 extraction method. Tobacco essential oil is widely used in the production of scented products. Along with this, due to its great medicinal properties, it is widely used in the cosmetic industry for getting soft and supple skin.

Tobacco essential oil is a kind of high-quality tobacco flavor similar to natural raw materials. Its volatile chemical components have been identified by GC / MS analysis. They mainly include 3-methylvaleric acid, valeric acid, noracetolide, and dihydrokiwi. Esters, daunone, β-damascenone, neophytadiene, β-ionol, sclarinone and other tobacco flavoring ingredients. Tobacco essential oil has the effect of transmitting the aroma of tobacco, making the smoke sweet, delicate, and soft, reducing irritation, covering up the odor, and obviously improving the smoking quality of cigarettes.

The supercritical mixed fluid is used to extract tobacco essential oil from the flavor tobacco extract. The extraction temperature is 40 ° C, the extraction pressure is 25-30MPa, the amount of entrainer is 4% -6%, the flow rate of CO2 is 2L / min, and the extraction time is 3 Hours, the extraction rate of tobacco essential oil can be increased to more than 8%.

Supercritical CO2 extraction of tobacco essential oil

The volatile oil of grass and fruit extracted with supercritical CO2 fluid has an average oil yield of 3.36%. It has been identified by chromatograph-mass spectrometry and contains 61 kinds of flavor components.

The cigarette flavoring test can obviously improve and modify the cigarette aroma and cover-up. Miscellaneous gas, improving aftertaste, softening the smoke, delicate aroma, and obviously improving the quality of the smoke. The fenugreek seed extract is used in the flavoring and adding test of cigarettes. Through the component identification and evaluation, it can be concluded that the fenugreek product extracted by supercritical co2 extraction has a higher quality than the tincture extracted by ordinary solvents.

Advantages of extracting essential oils in supercritical CO2 extraction

The oil yield of tobacco essential oil was 4.2%, which was about 73% higher than that of steam distillation. Guangxi Academy of Sciences has used the supercritical CO2 extraction method to study the extract of lingering herbs. The average product content is over 95% and the yield is over 1.2%, which is 5-6 times higher than the ordinary steam distillation method. The stability of the obtained lingering products Good, unique aroma, strong fragrance, natural aroma, good color, good solubility, it is one of the high-end natural tobacco flavors and fragrance products.

CO2 Extraction process

The extraction ture is 40 ° C, the CO2 extraction pressure is 25-30MPa, the amount of entrainer is 4% -6%, the flow rate of CO2 is 2L / min, and the extraction time is 3 Hours, the extraction rate of tobacco essential oil can be increased to more than 8%

  • Extraction temperature: 40 ° C
  • Extraction pressure:25-30MPa
  • Amount of entrainer:4%-6%
  • Flow rate of CO2:2L/min
  • Extraction time:3h
  • The extraction rate of tobacco essential oil can be increased to more than 8%


Solanesol is triple sesquiterpene alcohol (Solanesol), which is a waxy white solid with a melting point of 41.5-42.5 ° C and is easily soluble in organic solvents.

Solanesol accounts for 0.3% -4.5% of the total weight of tobacco.

Solanesol plays a very important role in biochemistry and is an important raw material for drug synthesis. It is an intermediate of the pinto case, and can also be used as a side chain of medicinal co-mycoprotein Q (a medicine for treating heart disease) and vitamin K.

Because solanesol itself contains multiple non-conjugated double bonds, it has a very strong ability to absorb free radicals. Using supercritical co2 extraction, solanesol can be extracted from tobacco residues or tobacco essential oil.

Natural flavors and fragrances

Tobacco has a sweet, earthy aroma that is difficult to replicate – a factor that has led to its popularity in numerous different types of bath and body products for both men and women.
The Tobacco Extract can often be found as a middle note in floral perfumes, where it helps to create a more complex aroma and can tone down the overly sweet nature of products with notes such as jasmine, rose, and violet.
While commonly found in perfumes and colognes, tobacco extract is also a common component of products such as lotions, aftershave, and more.

Natural flavors

With the improvement of people’s living standards, the sensory quality requirements for the aroma and harmony of cigarette products are becoming higher and higher, and the requirements for the variety and quality of flavor of cigarette products are becoming higher and higher.

The world more and more trusts the concept of “natural is safety”, so natural fragrances occupy an extremely important position in the flavor and fragrance industry.

Because natural fragrances have unique aromas that cannot be replaced by synthetic fragrances, they contain many Trace ingredients with special contributions in aroma and natural flavors are mostly non-toxic and side-effect, so they are widely used in the design of cigarette products.


The volatile aromatic components of many plants, essential oils, can be used as tobacco flavors. Most of these components are unstable and susceptible to thermal deterioration or volatility. The use of supercritical CO2 extraction at low operating temperatures has become a traditional steam distillation and organic Ideal alternative for solvent extraction.

The technology of reducing coke and harm is complex technology. It is required that cigarettes must retain their high aroma while reducing coke. Protect the interests of consumers. When the comprehensive coke reduction technology is adopted, flavor and flavor must be added to maintain and enhance the aroma of the cigarette. In addition to adding tobacco essential oil, the extraction and application of natural flavor is also an important approach. There are also many reports of such studies at home and abroad.

Application in tobacco analysis

The use of SFE in chromatographic technology has developed Supercritical CO2 Fluid Chromatography (SFC). Supercritical fluid chromatography (SPC) is a chromatographic process in which supercritical fluid is used as the mobile phase.

An effective and fast analysis method for easily pyrolysable substances.

It combines the characteristics of fast, efficient, high selectivity, and high separation efficiency of chromatographic analysis.

It opens a new way for the analysis of organic compounds and becomes suitable for the analysis of difficult to volatilize and easily heat An effective and fast way to dissolve polymer materials. It is widely used in tobacco analysis and drug analysis.

Tobacco analysis is mainly used to analyze the unique N-nitrosoamine (TSNA) in tobacco. SFC is used to analyze tobacco compounds with high sensitivity. Capillary SFC is used to analyze tobacco. For nitro and nitroso compounds, the detection limit can reach p8.

The application of supercritical fluid chromatography with chloroform as the extractant and the use of SFC and Ion (Ion Mobility Detector) to analyze nicotine in cigarettes and tobacco leaves is simple, sensitive and practical analysis of nicotine and other alkaloids method.

Compared with the current analytical method, the SFC-Ikm method not only has the advantage of high sensitivity but also its equipment cost is relatively low.

It is a very promising development to analyze nicotine and nicotine metabolites in tobacco. Analytical method. At the same time, carbon dioxide supercritical co2 extraction can be used as an efficient sample preparation technology for tobacco chemical composition analysis and cigarette quality research.

As a pretreatment method for tobacco chemical analysis, supercritical co2 extraction has the advantages of simplicity, fastness, good data reproducibility, a high degree of extraction automation, and no pollution. Tobacco supercritical co2 extracts are mainly non-polar and weakly polar compounds, which are closely related to the quality of cigarettes.