脉冲发生器
脉搏(音乐)
发电机(电路理论)
电压
高压
微控制器
电气工程
光电子学
材料科学
脉冲宽度调制
电穿孔
计算机科学
物理
工程类
功率(物理)
化学
基因
量子力学
生物化学
作者
S. Krishnaveni,Rajini Veeraraghavalu
出处
期刊:Turkish Journal of Electrical Engineering and Computer Sciences
[Scientific and Technological Research Council of Turkey]
日期:2018-09-28
卷期号:26 (5): 2374-2384
被引量:1
摘要
Pulsed electric field technology is an emerging nonthermal food processing method. PEF food processing requires a high voltage pulse generator that produces high intensive pulses to be delivered to the food product. Innovation in semiconductor technology motivates researchers to modernize high voltage pulse generators to reduce the cost, size, and complexities in circuit operation and to increase the suitability for food processing since the last few decades. The present study aims to explore a high voltage pulse generator for electroporation study. The implemented high voltage pulse generator develops $\sim $1.62 kV with adjustable pulse widths of 0.62 $\mu $s and 1.2 $\mu $s. The pulse frequency can be adjusted to 1, 10, 20, and 51 kHz by using a preprogrammed microcontroller. The implemented pulse generator is simple and compact at affordable cost. Experiments were conducted to prove the feasibility of the implemented high voltage pulse generator to inactivate Escherichia coli microorganisms. Escherichia coli cells were exposed to the electric field intensity produced by the implemented pulse generator and the observed results showed that there is a significant reduction of 5.9 log scale from the initial concentration.
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