| Title: | "Implementing Dynamic Headspace With SPME Sampling of Virgin Olive Oil Volatiles: Optimization, Quality Analytical Study, and Performance Testing" |
| Author(s): | Oliver-Pozo C; Trypidis D; Aparicio R; Garcia-Gonzalez DL; Aparicio-Ruiz R; |
| Address: | "Instituto de la Grasa (CSIC) , Campus Universidad Pablo de Olavide , Edificio 46, Ctra. de Utrera, km. 1 , 41013 Sevilla , Spain. School of Chemistry , Aristotle University of Thessaloniki , 54124 Thessaloniki , Greece. Department of Analytical Chemistry , Universidad de Sevilla , 41012 Sevilla , Spain" |
| ISSN/ISBN: | 1520-5118 (Electronic) 0021-8561 (Linking) |
| Abstract: | "Competition and interaction phenomena among volatiles during their adsorption process by solid phase microextraction (SPME) fibers in static headspace sampling procedure (SHS) cast doubt on its ability to quantify virgin olive oil volatiles. SPME fibers being excellent traps, their use was analyzed with a new device allowing the concentration of volatiles in a dynamic headspace sampling procedure (DHS). A central composite experimental design optimized the main variables of the device (4 g sample weight, 40 degrees C temperature, 150 mL/min flow rate, 50 min adsorption time), while values of the analytical quality control parameters of the method (repeatability, limits of detection and quantification, working range, sensitivity, and resolution) were compared with those ones from static headspace. DHS shows better precision results for aldehydes and alcohols than SHS and allowed analyzing higher concentrations with no problem of saturation. In 19 of 28 compounds analyzed in 50 samples the chromatographic areas were higher when running DHS. The concentration values of volatile compounds in these samples after applying SHS and DHS are discussed together with the ability of the new method for distinguishing virgin olive oil by their categories (extra virgin, virgin, and lampante) by the volatiles quantified in commercial oils" |
| Keywords: | "Chromatography, Gas/*methods Olive Oil/*analysis Quality Control Smell Solid Phase Microextraction/instrumentation/*methods Volatile Organic Compounds/*analysis Volatilization dynamic headspace gas chromatography internal quality control solid phase micro;" |
| Notes: | "MedlineOliver-Pozo, Celia Trypidis, Dimitrios Aparicio, Ramon Garcia-Gonzalez, Diego L Aparicio-Ruiz, Ramon eng 2019/01/24 J Agric Food Chem. 2019 Feb 20; 67(7):2086-2097. doi: 10.1021/acs.jafc.9b00477. Epub 2019 Feb 8" |
