Determination of relative dissociation energy from electro-optics as a new single-proposed parameter of vegetable oil quality

Abstract

In this report, we study the electro-optics effect on cooking oil to obtain the relative dissociation energy as a new single proposed parameter of oil quality. The sample was canola oil which had been heated in 0.5 hours, 2 hours and 4 hours. The light source used in the experiment was a green pointer laser with a wave length of 532 nm. The sample was applied to a potential difference from 0 to 9 kV to obtain the electro-optics effect in form of the change of the polarization angle Dq as function of potential difference DV. The relative dissociation energy was obtained from the fitting data of the relative Lenard-Jones potential energy curves represented by change of polarization per unit change of potential difference, Dq/DV. The result shows that the relative dissociation energy is reduced as the oil quality decreased after heated. The relative dissociation energy provides simple physical understanding about electro-optics effect on cooking oils. The study of electro-optics polarization that represents relative Lenard-Jones potential energy is a new but somewhat intuitive, which can be further improved and emphasized for grouping, mapping, and determining various cooking oil quality and halal food due to the lard contamination.

Characteristics of Palm Oil and Animal Oil Based on Relative Dissociation Energy Using Electrooptic Polarization

“…3 to Fig. 5, it is very exciting results to be noticed that as the length of heating of the sample increases, the value D decreases and fortunately is accompanied by an increase in the minimum relative distance between molecules s m , which is in agreement with our previous study [16,17]. Firstly, the decrease in value D as the increase in heating time can be explained by the development of various asymmetric molecules during the heating sample.…”

“…Through the electrooptic effect, it has been known that nonlinear optics in cooking oils can also be observed by measuring the change of light polarization, and this opens up new horizons and potential possibilities in the development of cooking oil quality evaluation along with the study of the interaction of light with matter [15][16][17][18][19][20][21][22]. Since the oil quality parameters accompanied by their methods or instruments are usually too many and complex, then there needs to be such a new idea that it is possible to obtain a single quality parameter [16,17]. The term electrooptic gradient has been first used [18] to describe the quality characteristics after undergoing heating and its relation to the composition of the fatty acid content, which describes the average polarization value per applied potential difference on a sample.…”

“…The term electrooptic gradient has been first used [18] to describe the quality characteristics after undergoing heating and its relation to the composition of the fatty acid content, which describes the average polarization value per applied potential difference on a sample. Still based on the hypothesis in the study of [16,17], the study of electro-optical polarization shows that the parameters of the electro-optic gradient are closely related to the molecular interactions in cooking oil. The interaction between triglyceride molecules in oil obeys Van der Waals interaction, in which the potential energy E LJ of Lenard-Jones as the distance between adjacent molecules R is given by ( 1)…”

Mapping Various Cooking Oil using Fluorescence Polarization

“…The change of fluorescence polarization angle in the measurement uses combination of pure scattering and fluorescence scattering, in which the pure scattering wavelength and fluorescence wavelength are overlapped. It is a very interesting research if we can use just pure scattering or just pure fluorescence that can be overcome by using filter of wavelength.In the transmission light, the transmission wavelength is the same with the incoming wavelengthandits direction [8], and so the change of polarization is observed in relative small angle and does not depend on the polarizer's angle.By applying electro-optics effect on sample in transmission case, it can increase the change of polarization and it has provided other interesting results [9].The physical variable of observation of fluorescence polarization that is perpendicular to the incoming light is the same with transmission polarization i.e. change of polarization angle, but provides more physical properties in fluorescence phenomena.The possibilities of combination transmission electro-optics and fluorescence electrooptics have been considering and developing.…”

Characterization of The Optical Properties of Motor Vehicle Engine Lubricants Using the Light Polarization Method

“…By setting the observation direction to fluorescent polarization [9][10][11], light polarization can also be used to identify various cooking oil types and evaluate pork oil contamination. In addition, the combination of natural polarization with electro-optical polarization can become a breakthrough in understanding the study of the interaction of linearly polarized light with materials, providing new insights into the Van der Waals molecular interactions in a matter [12][13]. Other materials, such as colloidal silver solution [14][15], also exhibited optically active and non-linear optical properties.…”