Abstract

A method for preparing a tar extract with aroma characteristics from a discarded cigarette butt includes: (1) adding the discarded cigarette butt to an extraction solvent, and carrying out subcritical fluid extraction to obtain an extraction solution; (2) carrying out vacuum filtration on the extraction solution, and carrying out vacuum distillation on the filtrate to obtain a concentrated extractum; and (3) carrying out molecular distillation on the concentrated extractum, and collecting a light fraction of the molecular distillation to obtain the tar extract with aroma characteristics. Through the subcritical fluid extraction and separation by the molecular distillation to prepare the tar extract, harmful substances in the tar are removed, and the aroma components are retained. The tar extract is applied to a cigarette to improve the aroma, smoke and taste characteristics of the cigarette.

IPC Classes  ?

• A24B 15/26 - Use of organic solvents for extraction
• B01D 11/02 - Solvent extraction of solids
• B01D 3/12 - Molecular distillation
• B01D 3/10 - Vacuum distillation
• A24D 3/04 - Tobacco smoke filters characterised by their shape or structure

Abstract

The present disclosure provides a method for extracting tar aroma components from a cigarette butt and use of the tar aroma components in a cigarette. The method includes the following steps: (1) adding the cigarette butt to an extraction solvent, and carrying out ultrasound-assisted extraction to obtain an extraction solution; (2) centrifuging the extraction solution, and carrying out vacuum distillation on the supernatant to obtain a concentrated extractum; and (3) carrying out molecular distillation on the concentrated extractum, and collecting a light fraction of the molecular distillation to obtain the tar aroma components. In the present disclosure, the cigarette butt is used as a raw material, through the ultrasound-assisted extraction and separation by the molecular distillation to extract the tar, harmful substances in the tar are removed, and the aroma components are retained. The tar aroma components are applied to a heat-not-burn cigarette, so that the aroma, smoke and taste characteristics of the heat-not-burn cigarette are improved, and the problems of insipidness and uneven aroma release of the heat-not-burn cigarette are solved effectively.

IPC Classes  ?

• A24B 15/24 - Treatment of tobacco products or tobacco substitutes by extractionTobacco extracts
• A24B 3/14 - Forming reconstituted tobacco products, e.g. wrapper materials, sheets, imitation leaves, rods, cakesForms of such products
• A24B 15/12 - Chemical features of tobacco products or tobacco substitutes of reconstituted tobacco
• A24B 15/26 - Use of organic solvents for extraction
• A24D 1/20 - Cigarettes specially adapted for simulated smoking devices
• A24D 3/14 - Use of materials for tobacco smoke filters of organic materials as additive
• A24D 3/17 - Filters specially adapted for simulated smoking devices
• B01D 3/10 - Vacuum distillation
• B01D 3/12 - Molecular distillation
• B01D 11/02 - Solvent extraction of solids

Abstract

A method for preparing a tar extract from a discarded cigarette butt and use of the tar extract in a cigarette includes the following steps: (1) adding the discarded cigarette butt to an extraction solvent, and carrying out microwave-assisted extraction to obtain an extraction solution; and (2) centrifuging the extraction solution, carrying out silica gel column chromatography on the supernatant, carrying out elution by using a petroleum ether-ethyl acetate mixed solution as a mobile phase, and collecting the resulting elution fraction to obtain the tar extract. In the method, the tar is extracted from the discarded cigarette butt as a raw material. Through the microwave-assisted extraction and separation by the silica gel column chromatography, harmful substances in the tar of the cigarette butt are removed, and the components with aroma characteristics are retained, and the tar extract is applied to a low-end cigarette.

IPC Classes  ?

• A24B 15/26 - Use of organic solvents for extraction
• B01D 15/42 - Selective adsorption, e.g. chromatography characterised by the development mode, e.g. by displacement or by elution
• B01D 3/10 - Vacuum distillation
• A24B 3/12 - Steaming, curing, or flavouring tobacco
• B01D 21/26 - Separation of sediment aided by centrifugal force
• A24D 3/14 - Use of materials for tobacco smoke filters of organic materials as additive

Abstract

A method for extracting tar aroma components from within cigarette butts and an application thereof in cigarettes. The method comprises the following steps: (1) adding cigarette butts to an extraction solvent and carrying out ultrasonic extraction to obtain an extract liquid; (2) centrifuging the extract liquid and then distilling a supernatant under reduced pressure to obtain a concentrated extract; and (3) carrying out molecular distillation on the concentrated extract and collecting light components of the molecular distillation to obtain the tar aroma components. The cigarette butts are used as raw materials, and ultrasonic extraction and molecular distillation are used to separate and extract tar, and remove harmful substances within tar while retaining the aroma components thereof. The method is applied to heat-not-burn cigarettes, and improves the aroma, smoke and taste characteristics of the heat-not-burn cigarettes, and effectively solves the problems of the heat-not-burn cigarettes such as low smoke flavor and uneven aroma release.

IPC Classes  ?

• A24B 15/24 - Treatment of tobacco products or tobacco substitutes by extractionTobacco extracts

Abstract

Disclosed is a method for preparing a tar extract having aromatic characteristics by using a discarded cigarette butt. The method comprises the following steps: (1) adding a discarded cigarette butt in an extraction solvent and performing subcritical extraction to obtain an extraction solution; (2) subjecting the extraction solution to vacuum filtration and distilling the resulting filtrate under reduced pressure to obtain a concentrated extract; and (3) subjecting the concentrated extract to molecular distillation and collecting light fractions of molecular distillation, thus obtaining the tar extract having aromatic characteristics. The tar extract having aromatic characteristics prepared by subcritical extraction and molecular distillation is free of harmful substances in the tar but retains aromatic components thereof. Use of the tar extract having aromatic characteristics in a cigarette improves the aroma, smoke and taste characteristics of the cigarette, provides an effective approach to broadening the application range and increase low-grade tobacco usage in low- and middle-grade cigarettes. By optimizing the conditions of subcritical extraction and molecular distillation for separation, a high yield of tar extract can be obtained from cigarette butts.

IPC Classes  ?

• A24B 15/24 - Treatment of tobacco products or tobacco substitutes by extractionTobacco extracts
• A24B 3/12 - Steaming, curing, or flavouring tobacco

Abstract

Provided are a method for preparing tar extract from discarded cigarette butts and an application thereof in cigarettes, the method comprising the following steps: (1) adding waste cigarette butts to an extraction solvent and performing microwave extraction to obtain an extract; (2) after centrifuging the extract, subjecting the supernatant to silica gel column chromatography, using a mixed solution of petroleum ether and ethyl acetate as the mobile phase to perform elution, and collecting the eluted fractions to obtain a tar extract. The tar substance in the cigarette butts is extracted while the harmful substances in the tar of the cigarette butts is removed, and the components having fragrance-producing characteristics are retained; the invention is applied to low-end cigarettes, improves the aroma, smoke, and taste characteristics of low-end cigarettes, improves the sensory quality of low-end cigarettes, increases the proportion of low-grade tobacco leaves used in cigarettes or broadens the uses of low-grade tobacco leaves, providing ideas and technical guarantees for relieving the pressure of low-grade tobacco leaf inventory.

IPC Classes  ?

• A24B 15/24 - Treatment of tobacco products or tobacco substitutes by extractionTobacco extracts
• A24B 3/12 - Steaming, curing, or flavouring tobacco