METHOD FOR PRODUCING OF EXPANDED TOBACCO STEM Russian patent published in 2007 - IPC A24B5/16 

FIELD: process for increasing volume and aromatizing of tobacco stem.

SUBSTANCE: method involves extracting mixture of fennel and garden sage using liquid carbon dioxide; separating miscella; moistening tobacco stem; impregnating with the use of separated miscella and simultaneously increasing pressure; reducing pressure to atmospheric pressure value at rate providing freezing of carbon dioxide sucked into miscella; heating at rate providing subliming of carbon dioxide for obtaining of base product.

EFFECT: provision for producing of tobacco stem used for obtaining of light type tobacco articles.