RECONSTITUTED TOBACCO AND PREPARATION METHOD THEREOF

The present invention provides reconstituted tobacco and a preparation method thereof， and belongs to the technical field of tobacco. The preparation method provided by the present invention includes the steps of: subjecting tobacco stems to hot-water extraction and pulping by mill successively to obtain tobacco stem pulp; mixing the tobacco stem pulp with alkaline matter for oxygen delignification in an oxygen environment to obtain oxygen-delignified tobacco stem pulp， where the alkaline matter includes one or more of sodium hydroxide， potassium hydroxide， potassium carbonate， sodium carbonate and sodium bicarbonate; mixing the oxygen-delignified tobacco stem pulp with tobacco pulp， calcium carbonate and a retention agent， and subjecting the mixture to a papermaking process in the paper machine to obtain reconstituted tobacco sheets; and coating the reconstituted tobacco sheets with a concentrated tobacco extracting solution to obtain reconstituted tobacco. By means of the oxygen delignification of the tobacco stem pulp in the present invention， the lignin component in tobacco stems is partially removed， and the reconstituted tobacco prepared from processed tobacco stems and other raw materials has a soft flavor without wood smell.