Influence of relative moisture content and pH value for tobacco strips under different storing conditions

CHEN Yi; YANG Jia-mei; WANG Yu-ping; YANG Hong-qi; YAN Yong-wang; XIN Shun-jia

doi:10.3969/j.issn.2096-1553.2016.6.007

Abstract：With typical mellowing storage in Xingyi,Guiyang and Guiding as samples,the variation of relative moisture content in the process of mellowing and pH of tobacco strips of upper and middle leaves from six raw material base was analyzed to improve the quality of tobacco strips mellowing and reduce the cost of storage. Results showed that,1 )Environmental temperature and air humidity had a large impact on tobacco mellowing storage,the higher annual average monthly temperature and humidity of mellowing storage could increase the speed of tobacco natural aging and reduce the time of tobacco natural mellowing.2)The different aroma type of tobacco strips in 3 mellowing storage with relative moisture content variation range had significant difference (P<0.05),relative water content variation range in strong flavor type and clean flavor type of tobacco in dif-ferent storage areas were significantly greater than relative water content variation range in local production and storage.3)During mellowing,the different aroma type of tobacco strips in 3 mellowing storage with pH value continued to decline,showed that alkaline material reduced and acid material increased after mellowing,pH value in the Xingyi mellowing storage of clean flavor type and middle flavor type tobacco strips declined more than tobacco strips of the Guiyang mellowing storage and Guiding mellowing storage,but pH value decline of strong flavor type tobacco strips in 3 mellowing storage showed no significant difference.