참기름의 진위판별에 있어서 지방산조성의 이용 = Fatty Acid Composition and its Application to the Detection of The Adultered Sesame Oil

다국어 초록 (Multilingual Abstract)

An attempt was made to use the fatty acid composition as a basis for the detection of sesame oil adulteration. The ratios of oleic to linoleic acid content(O/L ratios) In six kinds of sesame oil were in the range of 0.74∼0.91. Meanwhile, those of soybean, corn, rapeseed, and cottonseed oils were 0.41, 0.38, 1.05 and 0.29, respectively. The changes on the O/L ratio due to the adulteration up to 20% of with other oil were not noticeable. The adulteration with cottonseed and corn oils, identification was nearly impossible with O/L ratio alone. However, linolenic acid from soybean oil and erueic acid from rapeseed oil were good indication of the sesame oil adulteration. with these oils. The detection limits for adulteration in sesame oil were 5% for rapeseed oil and 10% for soybean oil. Application of this detection method on the 22 samples from market revealed the adultered sesame oil; five with rapeseed and 12 with soybean oil.