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Effects of Steam Pretreatment on the Extraction Efficiency of Tobacco Stems and the Smoke Components of Reconstituted Tobacco Sheets
Received:August 19, 2025  Revised:September 05, 2025
DOI:10.11980/j.issn.0254-508X.2025.11.019
Key Words:tobacco stems  steam treatment  extraction efficiency  water-soluble sugar  smoke component
Fund Project:河南中烟技术研究开发项目(AW2023031)。
Author NameAffiliationPostcode
WANG Runan* He’nan Cigarette Industry Tobacco Sheet Co., Ltd., Xuchang, He’nan Province, 461100
Tianjin Key Lab of Pulp and Paper, Tianjin University of Science and Technology, Tianjin, 300457 
300457
WANG Fan Tianjin Key Lab of Pulp and Paper, Tianjin University of Science and Technology, Tianjin, 300457 300457
LUO Chong He’nan Cigarette Industry Tobacco Sheet Co., Ltd., Xuchang, He’nan Province, 461100
Tianjin Key Lab of Pulp and Paper, Tianjin University of Science and Technology, Tianjin, 300457 
300457
HUANG Hanping He’nan Cigarette Industry Tobacco Sheet Co., Ltd., Xuchang, He’nan Province, 461100 461100
SUN Zhitao* He’nan Cigarette Industry Tobacco Sheet Co., Ltd., Xuchang, He’nan Province, 461100 461100
DUAN Ke Technology Center of China Tobacco He’nan Industry Co., Ltd., Zhengzhou, He’nan Province, 450000 450000
LI Jiahao Tianjin Key Lab of Pulp and Paper, Tianjin University of Science and Technology, Tianjin, 300457 300457
WEN Yangbing* Tianjin Key Lab of Pulp and Paper, Tianjin University of Science and Technology, Tianjin, 300457 300457
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Abstract:In this study, high-temperature steam was used to pretreat tobacco stems, and the effects of steam pretreatment time on the extraction efficiency of tobacco stems, water-soluble sugar content in the extract, microstructure, and smoke release characteristics of the produced reconstituted tobacco sheets were systematically investigated. The results showed that the steam pretreatment time significantly influenced the extraction rate of tobacco stems and the sugar content in the extract. Compared to untreated tobacco stems (with an extraction rate of 34.1%), the extraction rate increased by 21% after 8 min of steam pretreatment (with an extraction rate of 41.3%). Meanwhile, the increases in the content of water-soluble total sugars and reducing sugars in the extract both exceeded 69%. Microstructural analysis revealed that steam pretreatment caused the tissue structure of tobacco stems to expand and the pore sizes to increase. Smoke component analysis demonstrated that steam pretreatment effectively reduced the content of harmful components such as nicotine, formaldehyde, methanol, furfural, and chloromethane in the smoke of reconstituted tobacco sheets, and significantly increased the content of aromatic components such as acids, aldehydes, and phenols.
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