Effect of pulsed electric fields on proanthocyanidins in young red wine

Author

Chen, Jie ; Zhang, Ruobin ; Wang, Liming ; Mo, Mengbin

Author_Institution

Lab. of Adv. Technol. of Electr. Eng. & Energy, Tsinghua Univ., Shenzhen, China

fYear

2009

fDate

19-23 July 2009

Firstpage

1124

Lastpage

1127

Abstract

The effects of pulsed electric fields (PEFs) applied on the proanthocyanidins in young red wine was investigated using two co-field treatment chambers connected in series for fluid flow and in parallel for electrical flow. Reversed phase-high performance liquid chromatography (RP-HPLC) coupled with UV-visible detector was used to analyze the concentration of proanthocyanidins. The high voltage pulse generator in this experimental can generate monopolar or bipolar square wave pulses. The experimental results show that after PEF treatments, the contents of proanthocyanidins and its component units CAT, EC and ECG changed significantly and the trends were close to the evolution of wine that during natural aging. The contents of CAT and EC increased whereas ECG decreased as the applied electric field enhanced or treatment time lengthened.

Keywords

beverages; chemical reactions; chromatography; electric fields; food preservation; CAT; ECG; UV-visible detector; co-field treatment chambers; proanthocyanidins; pulsed electric fields; reversed phase-high performance liquid chromatography; young red wine; Aging; Chemicals; Electrocardiography; Electrodes; Fluid flow; Food preservation; Food technology; Frequency; Pulse generation; Voltage; high performance liquid chromatography (HPLC); proanthocyanidins; pulsed electric field;

fLanguage

English

Publisher

ieee

Conference_Titel

Properties and Applications of Dielectric Materials, 2009. ICPADM 2009. IEEE 9th International Conference on the

Conference_Location

Harbin

Print_ISBN

978-1-4244-4367-3

Electronic_ISBN

978-1-4244-4368-0

Type

conf

DOI

10.1109/ICPADM.2009.5252311

Filename

5252311