The important factors of sesame oil on its quality are acid value, peroxide value, and fatty acid composition. Acid value and peroxide value are determined by a wet analysis and fatty acid compositions by a gas chromatographic method. This study was carried out to ascertain the potential for utilizing NIR spectrophotometry as a means of rapid and non-destructive method to determine the constituent of sesame oil. Using both a fixed type and a grating-type device, the calibration obtained from the samples of sesame oil was successfully applied to the determination of the constituents such as acid value, peroxide value and fatty acids.
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