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Abstract
This research was conducted to find the “fingerprint” of the existence of lard in vegetable cooking oil. Integrated Polarizer is composed of light source, polarizer, analizer, cuvette, electrodes, and a camera. This tool works based on the transmission polarization method. Cooking oil used is palm oil that has been contaminated with chicken oil and lard the light source used is a green laser with wavelength of 532 ± 10 nm. Measurements are made by observing the change of transmission polarization angle. The results show that palm oil which contaminated by lard has the greatest polarization angle change compared to pure palm oil. The content of saturated fatty acids in lard is greater than pure palm oil resulting in a greater change in transmission polarization angles from the results showed that integrated polarizer can be used for detection of lard impurities in cooking oil
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Details
1 Department of Physics, Faculty of Science and Mathematics, Diponegoro University Jl. Prof. Soedharto, SH., Tembalang Semarang 50275, Indonesia