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ISSN: 2157-7064

Journal of Chromatography & Separation Techniques
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Research Article

Gas Chromatography-Mass Spectrometry Analysis of Photosensitive Characteristics in Citrus and Herb Essential Oils

Pei-Shan Wu1, Yu-Ting Kuo1, Shen-Ming Chen2*, Ying Li2 and Bih-Show Lou1*

1Chemistry Division, Center for General Education, Chang Gung University, 259 Wen-Hwa 1st Road, Kwei-Shan, Tao-Yuan 333, Taiwan, ROC

2Department of Chemical Engineering and Biotechnology, National Taipei University of Technology, No. 1, Section 3, Chung-Hsiao East Road, Taipei 106,Taiwan, ROC

*Corresponding Author:
Bih-Show Lou
Chemistry Division, Center for General Education
Chang Gung University, 259 Wen-Hwa 1st Road
Kwei- Shan, Tao-Yuan 333, Taiwan, ROC
Tel: +886 3 2118800 ext 5018
Fax: +886 3 2118700
E-mail: [email protected]
 
Shen-Ming Chen
Department of Chemical Engineering and Biotechnology
National Taipei University of Technology, No. 1, Section 3
Chung-Hsiao East Road, Taipei 106,Taiwan, ROC
Tel: +886 2270 17147
Fax: +886 2270 25238
E-mail: [email protected]

Received date: October 26, 2014; Accepted date: December 23, 2014; Published date: December 29, 2014

Citation:Wu PS, Kuo YT, Chen SM, Li Y, Lou BS (2014) Gas Chromatography- Mass Spectrometry Analysis of Photosensitive Characteristics in Citrus and Herb Essential Oils. J Chromatogr Sep Tech 6:261. doi:10.4172/2157-7064.1000261

Copyright: ©2014 Wu PS, et al. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.

Abstract

Essential oils (EOs) are commonly used in aromatherapy and offer a number of health benefits. However, the photosensitivity of citrus EO family limits their applications. It is important to characterize the compositional changes of EOs upon possible factors affecting their stability, such as light and water content. In this study, we used gas chromatography equipped with mass spectrometry detector to investigate the constituents of commercial citrus EOs (lemon, orange) and herb EOs (clary sage, lavender). The result indicated that limonene was the most abundant compound in citrus EOs and followed by β-pinene or β-myrcene. Linalyl acetate and β-linalool were the major constituents in herb EOs. It is surprised to find that almost no change in chemical composition under sunlight exposure for 2hr. In contrast, the amount of terpene hydrocarbons decreased greatly in citrus OEs with H2O addition and under sunlight exposure, which might be converted to oxidative compounds, such as carveol, ρ-cymene and limonene oxide. However, herb EOs was much less photosensitive, which are more potential to become a stable material for daily used products application.

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