Experimental study on identifying main component in rice bran oil with terahertz time-domain spectroscopy

Jiu-sheng Li; Xiao-li Zhao; Jian-rui Li

doi:10.1117/12.835033

4 August 2009 Experimental study on identifying main component in rice bran oil with terahertz time-domain spectroscopy

Jiu-sheng Li, Xiao-li Zhao, Jian-rui Li

Proceedings Volume 7385, International Symposium on Photoelectronic Detection and Imaging 2009: Terahertz and High Energy Radiation Detection Technologies and Applications; 73850M (2009) https://doi.org/10.1117/12.835033
Event: International Symposium on Photoelectronic Detection and Imaging 2009, 2009, Beijing, China

Abstract

The absorption spectra of rice bran oil in the frequency range of 0.2~1.6THz has been measured with terahertz timedomain spectroscopy (THz-TDS) at room temperature in nitrogen atmosphere. It is found that hexadecanoidc acid and octadecanoic acid contained in rice bran oil has the spectral response to terahertz waves in this frequency region. Simultaneously, the corresponding theoretical spectra were given by using DFT methods with the aid of Gaussian03. The experimental spectra are well comparable with the calculated spectra and these results mutually validated both approaches. It was found that the absorption peaks of the two molecules obtained by theoretical were in good agreement with the experimental results. The research results prove the feasibility of applying THz-TDS technique to detect and identify of main component of edible oil. Furthermore, the result s provided in this paper will help us to study the THz application to food quality evaluation or safety inspection further.

Citation Download Citation

Jiu-sheng Li, Xiao-li Zhao, and Jian-rui Li "Experimental study on identifying main component in rice bran oil with terahertz time-domain spectroscopy", Proc. SPIE 7385, International Symposium on Photoelectronic Detection and Imaging 2009: Terahertz and High Energy Radiation Detection Technologies and Applications, 73850M (4 August 2009); https://doi.org/10.1117/12.835033

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