Optimization of Microwave Vacuum Drying and Pretreatment Methods for Polygonum cuspidatum
Joint Authors
Song, C. F.
Xu, Wanxiu
Zhu, Guanyu
Hu, Shaogang
Li, Zhenfeng
Source
Mathematical Problems in Engineering
Issue
Vol. 2018, Issue 2018 (31 Dec. 2018), pp.1-11, 11 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2018-03-08
Country of Publication
Egypt
No. of Pages
11
Main Subjects
Abstract EN
This study was conducted to optimize the drying process of Polygonum cuspidatum slices using an orthogonal experimental design.
The combined effects of pretreatment methods, vacuum pressure and temperature of inner material, drying kinetics, color value, and retention of the indicator compounds were investigated.
Seven mathematical models on thin-layer drying were used to study and analyze the drying kinetics.
Pretreatment method with blanching for 30 s at 100°C increased the intensity of the red color of P.
cuspidatum slices compared with other pretreatment methods and fresh P.
cuspidatum slices.
P.
cuspidatum slices dried at 60°C retained more indicator compounds.
Furthermore, microwave pretreatment methods, followed by microwave vacuum for 200 mbar at 50°C, resulted in high concentration of indicator compounds, with short drying time and less energy.
This optimized condition for microwave vacuum drying and pretreatment methods would be useful for processing P.
cuspidatum.
The Newton, Page, and Wang and Singh models slightly fitted the microwave vacuum drying system.
The logarithmic, Henderson and Pabis, two-term, and Midilli et al.
models can be used to scale up the microwave vacuum drying system to a commercial scale.
The two-term and Midilli et al.
models were the best fitting mathematical models for the no-pretreatment case at 600 mbar and 60°C.
American Psychological Association (APA)
Xu, Wanxiu& Zhu, Guanyu& Song, C. F.& Hu, Shaogang& Li, Zhenfeng. 2018. Optimization of Microwave Vacuum Drying and Pretreatment Methods for Polygonum cuspidatum. Mathematical Problems in Engineering،Vol. 2018, no. 2018, pp.1-11.
https://search.emarefa.net/detail/BIM-1207766
Modern Language Association (MLA)
Xu, Wanxiu…[et al.]. Optimization of Microwave Vacuum Drying and Pretreatment Methods for Polygonum cuspidatum. Mathematical Problems in Engineering No. 2018 (2018), pp.1-11.
https://search.emarefa.net/detail/BIM-1207766
American Medical Association (AMA)
Xu, Wanxiu& Zhu, Guanyu& Song, C. F.& Hu, Shaogang& Li, Zhenfeng. Optimization of Microwave Vacuum Drying and Pretreatment Methods for Polygonum cuspidatum. Mathematical Problems in Engineering. 2018. Vol. 2018, no. 2018, pp.1-11.
https://search.emarefa.net/detail/BIM-1207766
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1207766