Abstract
Food processing utilizing underwater shock wave softens the food by breaking cells, and prevents loss of nutrients since there is little influence of heat. Moreover, it is also possible to extract a nutrient easily and reduce processing time. A device to generate a high intensity shock wave is required in order to process various kinds of food. The purposes of this research are to investigate the best condition to generate high intensity shock waves and to understand the behavior of converged shock wave.The capacitor electric discharge circuit was used as an underwater shock wave generating device. The waveform of discharge voltage and current were measured in order to search for the best condition of underwater discharge. It was confirmed that the larger charge voltage of capacitors become, the larger optimum electrodes interval become. Propagation and convergence of underwater shock wave was observed by numerical analysis.
Highlights
Eating habits become rich because the food processing technology develops
Food processing utilizing underwater shock wave softens the food by breaking cells, and prevents loss of nutrients since there is little influence of heat
We propose food processing using underwater shock wave
Summary
Eating habits become rich because the food processing technology develops. The conventional food processing are boil and burn, steam and so on for the improvement of safety and preservation. THE IMPULSE LARGE CURRENT EQUIPMENT The capacitor electric discharge circuit was manufactured as underwater shock wave generating equipment. After charging capacitors with 8–14 kV, underwater shock wave was generated by discharging between the electrodes installed underwater. MEASUREMENT EXPERIMENT “Charge voltage” and “Capacitance”, “Electrodes interval”, “Length of circuit cable” are considered as parameters to effect intensity of underwater shock wave. According to the former experiment (2) it was confirmed that optimum electrodes interval existed in every. Since it is difficult to simulate discharge phenomenon, SEP (High explosive made by kayaku-Japan) was installed in primary focus The purpose of this simulation is to recognize propagation and convergence of shock wave. As a conclusion it was confirmed that the larger V0 became, the larger optimum electrodes interval became
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