THE EFFECT OF FLOW RATE AND DURATION OF OZONATION ON THE CHANGE IN THE POLARIZATION ANGLE OF VIRGIN COCONUT OIL (VCO) WITH TRANSMISSION POLARIZATION METHOD

Abstract

Research on the polarization method was performed to determine the effect of ozonation on the change in the polarization angle. In the previous studies, the change in the polarization angle would be greater with the longer time of VCO ozonation. This study aimed to determine the effect and the relation of ozonation flow rate, ozonation duration, ozone dose, and viscosity on the changes in the transmission polarization angle on VCO. The sample used is VCO, which was ozonated with a constant volume and varied by its flow rates and ozonation times. The parameter measured from VCO is the change in the transmission polarization angle. Red and green diode lasers with a power of 5 mW were used as light sources. The results showed that the ozonation affects the value of the change in the polarization angle. The ozonated samples (B, C, D) has an average change in the polarization angle of 1.10° ± 0.07° (green laser) which is greater than the un-ozonated sample (A) of 0.60° ± 0.05o (green laser). The wavelength also affects the value of the change in the polarization angle of the VCO. Samples using a green laser have a greater change in the polarization angle than the red laser with an average of the change in the polarization angle in sample D are 1.50° ± 0.06° (green laser) and 1.40° ± 0.06° (red laser). The ozone dose in the sample affects the value of the change in the polarization angle. The larger the ozone dose results in the increasing value of the change in the polarization angle. The viscosity value also affects the change in the polarization angle of VCO. The greater viscosity results in the greater value of the change in the polarization angle.