The objective of this activity is to define the IPL process parameters for disinfection of selected powdered foods. The critical process parameters of IPL that govern the performance of IPL are follows: (1) number of pulses, (2) distance from the source of light, (3) residence time within the effective volume, (4) flow rate, and (5) geometry and composition of particles.
Once the pulse waveform (pulse width) and frequency (pulse repetition rate) is set, the fluence (Joule/meter2 or J/m2), which is the energy received from the lamp by the sample per unit area per second, is determined by the first 4 parameters on the list. This is the most important factor determining the effect of IPL on disinfection. The energy emitted by the flash lamp is different from the energy incident on the sample.