Changes of Water Activity and Physico-chemical Properties of Burley Tobacco as Affected by Storage and Moisture Contents
2007
Jang, S.W. (Bio-resources Research Group, KTnG Central Research Institute, Eumseong, Republic of Korea), E-mail: [email protected] | Cha, K.H. (Bio-resources Research Group, KTnG Central Research Institute, Eumseong, Republic of Korea) | Yang, J.C. (Bio-resources Research Group, KTnG Central Research Institute, Eumseong, Republic of Korea) | Lee, C.H. (Bio-resources Research Group, KTnG Central Research Institute, Eumseong, Republic of Korea) | Shin, S.K. (Bio-resources Research Group, KTnG Central Research Institute, Eumseong, Republic of Korea) | Jo, C.J. (Bio-resources Research Group, KTnG Central Research Institute, Eumseong, Republic of Korea)
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℃ with relative humidity of 24%, and another group of in burley tobacco was only kept in ambient temperature of 3℃ 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 from 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.
Показать больше [+] Меньше [-]Ключевые слова АГРОВОК
Библиографическая информация
Эту запись предоставил Korea Agricultural Science Digital Library