Effect of Gamma Radiation and Laser Exposure on Color Properties of Sesame Oil during Storage
Abstract
The aim of the present study was measured of the color properties as Hue degree, Saturation value, and Brightness value (HSB). Three samples of Sesame oil was exposure by laser) diod laser with wavelength 450 nm) with three times (0.5, 1.0 and 1.5 hour) and three samples of sesame oil were irradiated by Gamma Rays with three dosses 2, 4, 8 kGy) and one sample without any treatment (control). The processing of an image starts with the transfer of the image to the PC, where the image analysis process is applied.
After that, it is performed the segmentation to watermark determine if each pixel belongs to bottom, skin or color. The parameters obtained from each Sesame oil sample (in each image are the pixel number of lighter oil (Stage 1), of darker or sesame oil profile (Stage 2). Taking image of each Sesame oil samples, a total number of 6 parameters can be obtained.
Color properties {Hue, Saturation and brightness (HSB)}, color component {Red, Green and Blue (RGB)} of sesame oil. The obtained results were showed that by increasing Gamma radiation doses and exposure time of Laser, Hue Degree was increased, that mean the color of sesame oil may be improved to be less quality. While, Hue Degree was decreased by increasing storage period. Also, by increasing Gamma radiation doses and exposure time of Laser, the value of saturation was decreasing, that means that the color of sesame oil may be improved to be high quality. Meanwhile, the value of saturation was decreased by increasing storage period. As well as, by increasing Gamma radiation doses, exposure time of Laser and by increasing storage period the value of brightness was decreasing.
