A method of preparing a whitened tobacco material is provided, the method including the steps of (i) extracting a tobacco material with an aqueous solution to give a tobacco pulp and a tobacco extract; (ii) treating the tobacco pulp with at least one of a caustic reagent and an oxidizing agent for a time and at a temperature sufficient to lighten the color of the tobacco pulp to give a whitened tobacco pulp; (iii) clarifying the tobacco extract to remove higher molecular weight components; and (iv) combining the whitened tobacco pulp with a clarified tobacco extract to form a whitened tobacco material. The whitened tobacco material can be isolated and incorporated into a smokeless tobacco product. The invention also provides a smokeless tobacco product incorporating a whitened tobacco material. The smokeless tobacco product may be a snus-type formulation contained within a sealed pouch.
申请公布号
EP2814339(A1)
申请公布日期
2014.12.24
申请号
EP20130705370
申请日期
2013.02.12
申请人
R. J. REYNOLDS TOBACCO COMPANY
发明人
BEESON, DWAYNE WILLIAM;FLINCHUM, JR., JACK GRAY;GAN, HUAMIN