Journal of South China University of Technology(Natural Science) >

2017 , Vol. 45 >Issue 9: 67 - 73,87

DOI: https://doi.org/10.3969/j.issn.1000-565X.2017.09.010

Food Science & Technology

A Kinetic Model of Extracting Polysaccharides from Hemerocallis citrina by Combining Rectangular High Pulsed Electrical Field with Ultrasound

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  • 1.Light industry and Food Engineering College,Guangxi University,Nanning 530004,Guangxi,China; 2.School of Physics and Optoelectronics,South China University of Technology,Guangzhou 510640,Guangdong,China; 3.School of Food Science anol Engineering,South China University of Technology,Guangzhou 510640,Guangdong,China
陆海勤( 1973-) ，女，博士，副教授，主要从事声化学化工技术研究． E-mail: haiqin6@163． com

Received date: 2016-11-24

  Revised date: 2017-05-08

  Online published: 2017-08-30

Supported by

Supported by the National Natural Science Foundation of China( 11464002) and the Research Projects of the Education Ministry and Guangdong Province of China( 2013B090600034)

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Abstract

On the basis of the Fick's second law,a kinetic model was constructed to describe the extraction of Hemerocallis citrina polysaccharides in a rectangular high pulsed electrical field with ultrasound.Then,the changes of the extraction yield with time at different ultrasound powers and electric voltages were measured and as a result,the constructed kinetic model was verified.Finally,the corresponding kinetic parameters were obtained.The results show that the constructed kinetic model can well reflect the effective diffusion coefficient and the function relationship between the ultrasound power and the electric voltage in the extraction process,and the correlation between the experimental values and the predicted ones is comparatively obvious ( r2 = 0. 9286) .The construction of the kinetic model and the solution of the parameters help to design and improve the high pulsed electric field extraction technology with ultrasound.

Key words： Hemerocallis citrina polysaccharides; ultrasound field; rectangular high pulsed electrical field; extraction; kinetic model

Cite this article

LU Hai-qin LI Yi-hua LI Dong-mei YANG Ｒi-fu HANG Fang-xue ZHANG Li-chao FAN Xiao-dan . A Kinetic Model of Extracting Polysaccharides from Hemerocallis citrina by Combining Rectangular High Pulsed Electrical Field with Ultrasound[J]. Journal of South China University of Technology(Natural Science), 2017 , 45(9) : 67 -73,87 . DOI: 10.3969/j.issn.1000-565X.2017.09.010

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