| Title: | Adsorbent-SERS Technique for Determination of Plant VOCs from Live Cotton Plants and Dried Teas |
| Author(s): | Park J; Thomasson JA; Gale CC; Sword GA; Lee KM; Herrman TJ; Suh CP; |
| Address: | "Department of Biological and Agricultural Engineering, Texas A&M University, College Station, Texas 77843, United States. Department of Entomology, Texas A&M University, College Station, Texas 77843-2475, United States. Office of the Texas State Chemist, Texas A&M AgriLife Research, Texas A&M University System, College Station, Texas 77841, United States. Insect Control and Cotton Disease Research Unit, USDA, ARS, 2771 F&B Road, College Station, Texas 77845, United States" |
| ISSN/ISBN: | 2470-1343 (Electronic) 2470-1343 (Linking) |
| Abstract: | "We developed a novel substrate for the collection of volatile organic compounds (VOCs) emitted from either living or dried plant material to be analyzed by surface-enhanced Raman spectroscopy (SERS). We demonstrated that this substrate can be utilized to differentiate emissions from blends of three teas, and to differentiate emissions from healthy cotton plants versus caterpillar-infested cotton plants. The substrate we developed can adsorb VOCs in static headspace sampling environments, and VOCs naturally evaporated from three standards were successfully identified by our SERS substrate, showing its ability to differentiate three VOCs and to detect quantitative differences according to collection times. In addition, volatile profiles from plant materials that were either qualitatively different among three teas or quantitatively different in abundance between healthy and infested cotton plants were confirmed by collections on Super-Q resin for dynamic headspace and solid-phase microextraction for static headspace sampling, respectively, followed by gas chromatography to mass spectrometry. Our results indicate that both qualitative and quantitative differences can also be detected by our SERS substrate although we find that the detection of quantitative differences could be improved" |
| Notes: | "PubMed-not-MEDLINEPark, Jinhyuk Thomasson, J Alex Gale, Cody C Sword, Gregory A Lee, Kyung-Min Herrman, Timothy J Suh, Charles P-C eng 2020/02/26 ACS Omega. 2020 Feb 5; 5(6):2779-2790. doi: 10.1021/acsomega.9b03500. eCollection 2020 Feb 18" |
