THIN-LAYER DRYING KINETICS OF STRAWBERRY FRUIT LEATHER

被引：0

作者：

Lee, G. ^{[2
]}

Hsieh, F. ^{[1
]}

机构：

[1] Univ Missouri, Dept Biol Engn, Columbia, MO 65211 USA

[2] Kangwon Natl Univ, Div Agr Engn, Chunchon, South Korea

来源：

TRANSACTIONS OF THE ASABE | 2008年 / 51卷 / 05期

关键词：

Activation energy; Diffusivity; Drying; Mathematical modeling; Strawberry leather;

D O I：

暂无

中图分类号：

S2 [农业工程];

学科分类号：

0828 ;

摘要：

The effects of air temperature and sample thickness on drying kinetics; of strawberry fruit leather were investigated. The mathematical modeling was performed by using three thin-layer drying models. The independent variables were sample thickness (1.8, 2.7, and 3.6 mm) and air temperature (50 degrees C, 60 degrees C, 70 degrees C, and 80 degrees C). Drying took place in the falling rate period. The values of effective moisture diffusivity (D-eff) varied from 2.40 x 10(-9) to 12.1 x 10(-9) m(2) s(-1) depending on drying conditions. The values of activation energy (E-a) were 35.57, 33.14, and 30.46 kJ mol(-1) for 1.8, 2.7, and 3.6 mm sample thickness, respectively. The two-term exponential model was found to satisfactorily describe the thin-layer drying kinetics of strawberry leather.

引用

页码：1699 / 1705

页数：7

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