The Analysis of Volatile Organic Compounds from Fresh and Dried Leaves of Vitex negundo by Thermal Desorption-Gas Chromatography

  • Denise G. Teotico Department of Chemistry & National Chemistry Instrumentation Center, School of Science and Engineering, Ateneo de Manila University, Quezon City
  • Maria Cristina A. Dancel Department of Chemistry & National Chemistry Instrumentation Center, School of Science and Engineering, Ateneo de Manila University, Quezon City
  • Fabian M. Dayrit Department of Chemistry & National Chemistry Instrumentation Center, School of Science and Engineering, Ateneo de Manila University, Quezon City
Keywords: thermal desorption, gas chromatography, volatile organic compounds, Vitex negundo

Abstract

The generation and analysis of volatile organic compounds (VOCs) from fresh and dried leaves of Vitex negundo (lagundi) by thermal desorption-gas chromatography (TD-GC) is described. The leaves were heated at 80 to 120°C in a tube to release the VOCs. The VOCs were cryofocused into the gas chromatography (GC) column and analyzed. Five compounds were identified in the VOC by electron impact-MS and chemical ionization-MS analysis: β-phellandrene, hexenal, hexenol, octenol, and β-caryophyllene. The VOCs were quantified by flame ionization detection-GC. The profiles produced by TD-GC were compared with GC analysis of the oil obtained by steam distillation. TD-GC was found to be superior to steam distillation in its ability to differentiate fresh from dried leaves.
How to Cite
Teotico, D. G., Dancel, M. C. A., & Dayrit, F. M. (1). The Analysis of Volatile Organic Compounds from Fresh and Dried Leaves of Vitex negundo by Thermal Desorption-Gas Chromatography. KIMIKA, 16(2), 59-63. https://doi.org/10.26534/kimika.v16i2.59-63
Section
Research Articles