CAJ | 학술논문

为分析滚筒分段变温干燥方式下叶丝含水率变化、物理特性及叶丝香味成分变化规律，考察了100、120、130、140、150℃滚筒恒温干燥后，150/100、140/100、130/100、120/100℃滚筒分段变温干燥后，以及140/100℃分段变温干燥条件下分别在叶丝含水率为19%、17%、15%时改变筒壁温度进行干燥后叶丝填充值、弹性的变化情况，并对比了两种干燥方式下叶丝石油醚提取物及香味成分的变化规律。结果表明：①采用第一阶段高温第二阶段低温的变温干燥方式，通过提高脱水前期的筒壁温度，能够明显提升叶丝干燥效率；②与高温恒温干燥过程相比，采用第一阶段高温第二阶段低温的变温干燥方式有利于提高叶丝弹性、填充值，叶丝中棕色化反应产物、类胡萝卜素降解产物等香味成分含量也明显升高；③变温干燥方式下，变温点处烟丝含水率从19%降低至15%时，叶丝填充值呈降低趋势，弹性呈增大趋势，叶丝中香味成分总量也呈降低的趋势。
위분석곤통분단변온간조방식하협사함수솔변화、물리특성급협사향미성분변화규률，고찰료100、120、130、140、150℃곤통항온간조후，150/100、140/100、130/100、120/100℃곤통분단변온간조후，이급140/100℃분단변온간조조건하분별재협사함수솔위19%、17%、15%시개변통벽온도진행간조후협사전충치、탄성적변화정황，병대비료량충간조방식하협사석유미제취물급향미성분적변화규률。결과표명：①채용제일계단고온제이계단저온적변온간조방식，통과제고탈수전기적통벽온도，능구명현제승협사간조효솔；②여고온항온간조과정상비，채용제일계단고온제이계단저온적변온간조방식유리우제고협사탄성、전충치，협사중종색화반응산물、류호라복소강해산물등향미성분함량야명현승고；③변온간조방식하，변온점처연사함수솔종19%강저지15%시，협사전충치정강저추세，탄성정증대추세，협사중향미성분총량야정강저적추세。
In order to analyze the changes of physical properties of, moisture content and aroma components in cut strips in dual-temperature cylinder drying, the filling values and elasticity of cut strips dried in cylinder at constant temperatures of 100, 120, 130, 140, 150 ℃ and at temperature combinations of 150/100 (first section temperature/second section temperature), 140/100, 130/100 and 120/100 ℃ were determined, and the contents of petroleum ether extracts and aroma components in cut strips dried at constant and varied temperatures were compared. For the temperature combination of 140/100 ℃,experiments were conducted by changing cylinder wall temperature when tobacco moisture contents reached 19%, 17%, 15% separately. The results showed that: 1) Under high/low temperature combination conditions, the drying efficiency of cut strips was obviously promoted by rising cylinder wall temperature at earlier drying stage. 2) Comparing with constant high temperature drying, high/low temperature combination was helpful to improving the elasticity and filling value of cut strips, meantime, the aroma components, such as brown reaction products and carotenoids degradation products, increased obviously. 3) Under dual-temperature drying, the filling value of and total aroma component content in dried cut strips would decrease, while its elasticity would increase when temperature transition point was the moisture content reached 15% instead of 19%.