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Chinese Agricultural Science Bulletin ›› 2025, Vol. 41 ›› Issue (10): 152-157.doi: 10.11924/j.issn.1000-6850.casb2024-0423

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Effects of Air-curing Environment and Methods on Moisture Variation and Quality of Cigar Leaves

WANG Zhenghao1(), XING Zhuoran2, CAI Baocai3, ZHONG Junwen2,4, MA Lijuan3, HUANG Ke3, YIN Guangting5, DUAN Weidong5, SHI Xiangdong2, LI Jianhua1()   

  1. 1 Xuchang Tobacco Company, Xuchang, Henan 452570
    2 Key Laboratory of Tobacco Industry and Tobacco Cultivation, Henan Agricultural University, Zhengzhou 450002
    3 Yuzhou Branch, Xuchang Tobacco Company, Xuchang, Henan 461670
    4 Hongyun Honghe Tobacco (Group) Co., Ltd., Mile, Yunnan 650231
    5 China Tobacco Henan Industrial Co., Ltd., Zhengzhou 450000
  • Received:2024-06-27 Revised:2024-12-15 Online:2025-04-05 Published:2025-04-03

Abstract:

To explore the effects of air-curing room environment and methods on the moisture content and quality of cigar leaves during the airing process, ‘Habanos-2000’ cigar variety was selected as the experimental material, and two airing methods, normal airing and airing with stem, were set up. Airing was conducted in both a simple air-curing room with significant temperature and humidity differences and a reformed air- curing room. The grey relational analysis method was employed to study the influence of air-curing room environment and airing methods on moisture content, free water, bound water content, and moisture migration rate during the drying process of cigar leaves. By comparing the chemical composition of fermented leaves in each treatment, the suitable air-curing room pattern and drying method for the airing process of cigar leaves in Xuchang region were determined. The results showed that airing temperature had a significant effect on the moisture content of cigar leaves, while airing humidity had a significant effect on the bound water content and moisture migration rate of leaves. Specifically, the temperature in the simple air-curing room had the greatest impact on the moisture content of leaves under normal airing conditions, and the humidity in the reformed air-curing room had the greatest impact on the bound water content under normal airing conditions and the moisture migration rate under airing with stem conditions. Additionally, the cigar leaves airing with stem in the reformed air-curing room had the lowest total sugar, reducing sugar, and nicotine content, while the potassium content, potassium-chlorine ratio, nitrogen-nicotine ratio, and total sugar-reducing sugar ratio were the highest. In conclusion, cigar leaves airing with stem in an air-curing room equipped with temperature and humidity control devices in Xuchang region can provide more sufficient moisture supply for the leaves, thereby improving the quality of the dried leaves.

Key words: cigar leaves, air-curing, water content, airing with stem, grey relational analysis, quality of cigar leaves