高校化学工程学报2017，Vol.31Issue(4)：810-817,8.DOI:10.3969/j.issn.1003-9015.2017.04.008
薰衣草吸附干燥特性及工艺条件研究
Study on Adsorption Drying of Lavender: Characteristics and Processes
摘要
Abstract
Adsorption drying curves were measured with a low-temperature adsorption drying apparatus and drying kinetics of lavender was investigated. Effects of adsorption drying conditions on the contents of total flavonoid, luteolin and apigenin in dried lavender were studied. The preferred drying conditions were optimized by orthogonal experimental design. The results show that adsorption drying rates of lavender increase rapidly by reducing relative humidity and improving drying temperature/space velocity of drying medium. Relative humidity is a key factor to total flavonoid contents, while drying temperature is a sensitive factor to luteolin contents. The suitable drying process conditions are: drying temperature of 30℃, average relative humidity of 16% and space velocity of 905 h-1. The content of total flavonoids under the optimized conditions is 2.673% and the contents of luteolin and apigenin are 0.976% and 0.0245% in dried lavender, respectively. Midilli-Kucuk mathematical model can well fit the adsorption drying curves. The dynamic equation for lavender adsorption drying process is: WR = 0.9834exp(-5.484×10-4×t1.46)-6.2934t.关键词
薰衣草/吸附干燥/黄酮/正交实验/数学模拟Key words
lavender/adsorption drying/flavone/orthogonal experiment/mathematical simulation分类
化学化工引用本文复制引用
庄棪,戴欣烨,崔群,王海燕..薰衣草吸附干燥特性及工艺条件研究[J].高校化学工程学报,2017,31(4):810-817,8.基金项目
国家自然科学基金(51476074). （51476074）
