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Quantitative Analysis of Acid Value, Iodine Value and Fatty Acids Content in Sesame Oils by NIRS  

Kim, Jae-Kwan (Gyeonggi-do Institute of Health and Environment)
Lee, Myung-Jin (Gyeonggi-do Institute of Health and Environment)
Kim, Myung-Gill (Gyeonggi-do Institute of Health and Environment)
Kim, Kyung-A (Gyeonggi-do Institute of Health and Environment)
Park, Eun-Mi (Gyeonggi-do Institute of Health and Environment)
Kim, Young-Sug (Gyeonggi-do Institute of Health and Environment)
Ko, Hoan-Uck (Gyeonggi-do Institute of Health and Environment)
Son, Jin-Seok (Gyeonggi-do Institute of Health and Environment)
Publication Information
Journal of Food Hygiene and Safety / v.21, no.4, 2006 , pp. 204-212 More about this Journal
Abstract
This study was conducted to investigate the possibility of rapid and non-des tructive evalution of AV (Acid Value), IV (Iodine Value) and fatty acids in sesame oils. The samples were scanned over the range $400\sim2500nm$ using transmittance spectrum of NIRS(Near-infrared spectroscopy). A calibration equation calculated by MPLS regression technique was developed and correlation coefficient of determination for AV, IV, palmitic acid, stearic acid, linoleic acid and linolenic acid content were 0.9907, 0.9677, 0.9527, 0.9210, 0.9829, 0.9736 and 0.9709 respectively. The validation model for measuring the AV content had R of 0.989, SEP of 0.058 and IV content had R of 0.944, SEP of 0.562 and palmitic acid content had R of 0.924, SEP of 0.194 and stearic acid content had R of 0.717, SEP of 0.168 and oleic acid content had R of 0.989, SEP of 0.221 and linoleic acid content had R of 0.967, SEP of 0.297 and linolenic acid content had R of 0.853, SEP of 0.480 by MPLS. The obtained results indicate that the NIRS procedure can potentially be used as a non-destructive analysis method for the purpose of rapid and simple measurement of AV, IV and fatty acids in sesame oils.
Keywords
NIRS; MPLS(Modified Partial Least Squares); AV; IV; fatty acids;
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