Method for extracting tar aroma components from within cigarette butts and application thereof in cigarettes

A method for extracting tar aroma components from a cigarette butt, comprising following steps:

• (1) adding the cigarette butt to an extraction solvent, and carrying out ultrasound-assisted extraction to obtain an extraction solution,
• the extraction solvent is at least one of methanol, anhydrous ethanol, petroleum ether and dichloromethane,
• the ultrasound-assisted extraction is carried out with an ultrasound power of 60-120W for 5-30 min;
• (2) centrifuging the extraction solution, and carrying out vacuum distillation on a supernatant to obtain a concentrated extractum;
• and
• (3) carrying out two-stage molecular distillation on the concentrated extractum, and collecting light fractions of a first-stage molecular distillation and a second-stage molecular distillation to obtain the tar aroma components,
• wherein the first-stage molecular distillation is carried out at a heating temperature of 50-80° C. under a pressure of 100-200 Pa at a feed rate of 300-600 mL/h and a film wiping speed of 200-300 rpm;
• wherein the second-stage molecular distillation is carried out at a heating temperature of 90-110° C. under a pressure of 40-60 Pa at a feed rate of 300-600 mL/h and a film wiping speed of 200-300 rpm;
• wherein the light fractions comprise at least one component from among components of ethylene glycol diacetate, 1-(1,3-dioxolan-2-yl)acetone, 4-cyclopentene-1,3-dione, methylcyclopentenolone, 2-acetylfuran, 2(5H)-furanone, 5-methylfurfural, 3-methyl-2-cyclopenten-1-one, 2,3-dimethyl-2-cyclopentenone, ethylcyclopentenolone, 5-hydroxymethylfurfural, vanillin, 2,4,4-trimethylpentane-1,3-diyl bis(2-methylpropionate), phthalic acid 1-butyl 2-isobutyl ester and tributyl prop-1-ene-1,2,3-tricarboxylate.