QUALITY EVALUATION OF SESAME OIL DURING PANTRY STORAGE USING LASER TECHNIQUE

Shaimaa Rabea

Abstract


The objective of the present study was irradiation sesame oil for pantry storage using Laser radiation then quality evaluation of sesame oil to prolong shelf life. Sesame Seed sample was obtained from the Agricultural Research Center, Field Crops Research Institute (FCRI) - Department of Oil Crops Research .Then sesame seed was extracted on cold press from Extraction Unit - National Research Institute to obtain sesame oil.  Three samples of sesame oil were irradiated by Laser Rays with three exposure times 0.5, 1.0, 1.5 hr and one sample without any treatment (control). The total samples of sesame oil after irradiated were analyzed the physical and chemical properties. The obtained results were showed as following:

Acid, Peroxide, and Saponification values were increased by increasing storage time from 3 to 9 months, for irradiation of exposure time from 0 to 1.5 hr. While, that values were decreased by increasing storage time from 3 to 6 to 9 months.

But, Iodine and Rancimate values were decreased by increasing storage time from 3 to 6 to 9 months, for irradiation of exposure time from 0 to 1.5 hr. While, It were found that iodine and Rancimate values were decreased by increasing exposure time of Laser from 0 to 1.5 hr.

Reflective Index was light decreased by increasing storage time from 3 to 6 to 9 months. Which, not effect of Reflective Index of oil sesame oil quality ,  at increasing irradiation doses of from control to 0.5 to 1.0 to 1.5 hr,. It was noticed that Reflective Index not changed by irradiated sesame oil during pantry of storage time .


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