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A Second Derivative Fourier-Transform Infrared Spectroscopy Method to Discriminate Perilla Oil Authenticityopen access

Authors
Park, Su MiYu, Hyo-YeonChun, Hyang SookKim, Byung HeeAhn, Sangdoo
Issue Date
May-2019
Publisher
JAPAN OIL CHEMISTS SOC
Keywords
authenticity; second derivative FT-IR; perilla oil; economically motivated adulteration; linolenic acid
Citation
JOURNAL OF OLEO SCIENCE, v.68, no.5, pp.389 - 398
Journal Title
JOURNAL OF OLEO SCIENCE
Volume
68
Number
5
Start Page
389
End Page
398
URI
https://scholarworks.sookmyung.ac.kr/handle/2020.sw.sookmyung/3649
DOI
10.5650/jos.ess18248
ISSN
1345-8957
Abstract
The aim of this study was to discriminate the authenticity of perilla oils distributed in Korea using their Fourier-Transform infrared spectroscopy (FT-IR) spectra with attenuated total reflectance accessory. By using orthogonal projections for latent structures discriminant analysis (OPLS-DA) technique, the =C-H cis-double bond, -C-H asymmetric and -C-H symmetric stretching are determined to be the best variables for discriminating the perilla oil authenticity. Comparing the integral and the second derivative methods between authentic and adulterated perilla oil samples, the most obvious and significant differences among the three variables is =C-H cis-double bond stretching. The procedure for applying the second derivative range of variables found in authentic perilla oil samples correctly discriminated between the adulterated samples of perilla oils with soybean oils and/or corn oils added at concentrations of >= 5 vol%. These results showed that the second derivative FT-IR analysis can be used as a simple and alternative method for discriminating the authenticity of perilla oil.
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Kim, Byung Hee
생활과학대학 (식품영양학과)
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