QUANTITATIVE ANALYSIS OF TRANS FATTY ACIDS IN COOKED SOYBEAN OIL USING TERAHERTZ SPECTRUM
Abstract
A method for the quantitative analysis of trans fatty acids (TFAs) in cooked soybean oil using terahertz (THz) spectrum is developed. The THz spectra of three groups of soybean oil samples that were cooked at different temperatures for various times were measured using a terahertz time-domain spectrum system (THz-TDS）with frequency range of 0.2-1.5 THz. A partial least squares (PLS) regression model based on the whole THz spectrum was constructed to predict the TFAs content in the cooked soybean oil samples. To reduce noise and improve the prediction accuracy of the model, a subinterval PLS (sub-PLS) model based on a part of the THz spectrum was constructed. This sub-PLS had high accuracy in predicting the TFAs content in cooked soybean oil samples (R = 0.987 and RMSECV = 0.956).
Keywords
terahertz spectrum,
trans-fatty acids,
quantitative analysis,
partial least squares,
subinterval partial least squares
Supporting agencies: This work was supported by the Open Fund of the Key Laboratory of Grain Information Processing and Control (Henan University of Technology, KFJJ-2017-108), Ministry of Education, Zhengzhou, China, the Fund of Foundation and Frontier of Henan Province (Grant No. 152300410079), Zhengzhou, China, and the Fund of Zhongyuan Scholar of China (172101510005).
About the Authors
F. Y. Lian
Henan University of Technology
China
China
Grain Information Processing and Control, Key Laboratory of Ministry of Education; Grain Photoelectric Detection and Control, Key Laboratory of Henan Province
ZhengzhouH. Y. Ge
Henan University of Technology
China
China
Grain Information Processing and Control, Key Laboratory of Ministry of Education; Grain Photoelectric Detection and Control, Key Laboratory of Henan Province
ZhengzhouX. J. Ju
Collaborative Innovation Center of Henan Grain Crops
China
Zhengzhou
China
Zhengzhou
Y. Zhang
Henan University of Technology
China
China
Grain Information Processing and Control, Key Laboratory of Ministry of Education; Grain Photoelectric Detection and Control, Key Laboratory of Henan Province
ZhengzhouM. X. Fu
Henan University of Technology
China
China
Grain Information Processing and Control, Key Laboratory of Ministry of Education; Grain Photoelectric Detection and Control, Key Laboratory of Henan Province
ZhengzhouReferences
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For citations:
Lian F.Y., Ge H.Y., Ju X.J., Zhang Y., Fu M.X. QUANTITATIVE ANALYSIS OF TRANS FATTY ACIDS IN COOKED SOYBEAN OIL USING TERAHERTZ SPECTRUM. Zhurnal Prikladnoii Spektroskopii. 2019;86(5):837(1)-837(9).
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