Journal of the Korean Society of Tobacco Science (한국연초학회지)

The Korean Society of Tobacco Science (한국연초학회)
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Changes of Water Activity and Physico-chemical Properties of Burley Tobacco as Affected by Storage and Moisture Contents

저장조건과 수분함량에 따른 버어리종 잎담배 수분활성도 및 이화학적 특성 변화

  • Jang, Soo-Won (Bio-resources Research Group, KT&G Central Research Institute) ;
  • Cha, Kwang-Ho (Bio-resources Research Group, KT&G Central Research Institute) ;
  • Yang, Jin-Chul (Bio-resources Research Group, KT&G Central Research Institute) ;
  • Lee, Chul-Hwan (Bio-resources Research Group, KT&G Central Research Institute) ;
  • Shin, Seung-Ku (Bio-resources Research Group, KT&G Central Research Institute) ;
  • Jo, Chun-Joon (Bio-resources Research Group, KT&G Central Research Institute)
  • 장수원 (KT&G 중앙연구원 생물자원연구소) ;
  • 차광호 (KT&G 중앙연구원 생물자원연구소) ;
  • 양진철 (KT&G 중앙연구원 생물자원연구소) ;
  • 이철환 (KT&G 중앙연구원 생물자원연구소) ;
  • 신승구 (KT&G 중앙연구원 생물자원연구소) ;
  • 조천준 (KT&G 중앙연구원 생물자원연구소)
  • Published : 2007.12.25
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Abstract

The study was carried out to investigate water activity, physicochemical properties and color degree of burley tobacco stored in shelf with different moisture content for 56 days. The study was consist of two experimental designs, that is, moisture content in burley tobacco was kept to 13 to 15 %, 17 to 19 %, and 21 to 23 % under ambient temperature of $20^{\circ}C$ with relative humidity of 24 %, and another group of in burley tobacco was only kept in ambient temperature of $3^{\circ}C$ with relative humidity of 50 % for 56 days with same water content of former treatment. Normal leaves were kept for 56 days under 21 to 23% of moisture content with increased water activity and TSNA(tobacco-specific nitrosamine content. It was considered that favorable leaves conditions are due to favorable microbial growth resulting in increased TSNA content. The total nitrogen content has not changed in two experimental groups for 56 days, otherwise the nitrate form nitrogen and total alkaloid contents were only increased by 21 to 23 % of water content. Degree of pH change was slightly decreased in both storage and water treatment. It was more decreased in 21 to 23% of moisture content than that of other moisture content. In stored leaf tobacco, higher moisture content caused lower brightness, yellow degree, and carbonization quotient.

Keywords

References

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